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-rw-r--r--Documentation/filesystems/00-INDEX2
-rw-r--r--Documentation/filesystems/exofs.txt23
-rw-r--r--fs/exofs/Kbuild2
-rw-r--r--fs/exofs/common.h81
-rw-r--r--fs/exofs/exofs.h97
-rw-r--r--fs/exofs/inode.c409
-rw-r--r--fs/exofs/ios.c421
-rw-r--r--fs/exofs/osd.c125
-rw-r--r--fs/exofs/pnfs.h51
-rw-r--r--fs/exofs/super.c353
10 files changed, 1107 insertions, 457 deletions
diff --git a/Documentation/filesystems/00-INDEX b/Documentation/filesystems/00-INDEX
index f15621ee559..7001782ab93 100644
--- a/Documentation/filesystems/00-INDEX
+++ b/Documentation/filesystems/00-INDEX
@@ -36,6 +36,8 @@ dnotify.txt
- info about directory notification in Linux.
ecryptfs.txt
- docs on eCryptfs: stacked cryptographic filesystem for Linux.
+exofs.txt
+ - info, usage, mount options, design about EXOFS.
ext2.txt
- info, mount options and specifications for the Ext2 filesystem.
ext3.txt
diff --git a/Documentation/filesystems/exofs.txt b/Documentation/filesystems/exofs.txt
index 0ced74c2f73..abd2a9b5b78 100644
--- a/Documentation/filesystems/exofs.txt
+++ b/Documentation/filesystems/exofs.txt
@@ -60,13 +60,13 @@ USAGE
mkfs.exofs --pid=65536 --format /dev/osd0
- The --format is optional if not specified no OSD_FORMAT will be
- preformed and a clean file system will be created in the specified pid,
+ The --format is optional. If not specified, no OSD_FORMAT will be
+ performed and a clean file system will be created in the specified pid,
in the available space of the target. (Use --format=size_in_meg to limit
the total LUN space available)
- If pid already exist it will be deleted and a new one will be created in it's
- place. Be careful.
+ If pid already exists, it will be deleted and a new one will be created in
+ its place. Be careful.
An exofs lives inside a single OSD partition. You can create multiple exofs
filesystems on the same device using multiple pids.
@@ -81,7 +81,7 @@ USAGE
7. For reference (See do-exofs example script):
do-exofs start - an example of how to perform the above steps.
- do-exofs stop - an example of how to unmount the file system.
+ do-exofs stop - an example of how to unmount the file system.
do-exofs format - an example of how to format and mkfs a new exofs.
8. Extra compilation flags (uncomment in fs/exofs/Kbuild):
@@ -104,8 +104,8 @@ Where:
exofs specific options: Options are separated by commas (,)
pid=<integer> - The partition number to mount/create as
container of the filesystem.
- This option is mandatory
- to=<integer> - Timeout in ticks for a single command
+ This option is mandatory.
+ to=<integer> - Timeout in ticks for a single command.
default is (60 * HZ) [for debugging only]
===============================================================================
@@ -116,7 +116,7 @@ DESIGN
with a special ID (defined in common.h).
Information included in the file system control block is used to fill the
in-memory superblock structure at mount time. This object is created before
- the file system is used by mkexofs.c It contains information such as:
+ the file system is used by mkexofs.c. It contains information such as:
- The file system's magic number
- The next inode number to be allocated
@@ -134,8 +134,8 @@ DESIGN
attributes. This applies to both regular files and other types (directories,
device files, symlinks, etc.).
-* Credentials are generated per object (inode and superblock) when they is
- created in memory (read off disk or created). The credential works for all
+* Credentials are generated per object (inode and superblock) when they are
+ created in memory (read from disk or created). The credential works for all
operations and is used as long as the object remains in memory.
* Async OSD operations are used whenever possible, but the target may execute
@@ -145,7 +145,8 @@ DESIGN
from executing in reverse order:
- The following are handled with the OBJ_CREATED and OBJ_2BCREATED
flags. OBJ_CREATED is set when we know the object exists on the OSD -
- in create's callback function, and when we successfully do a read_inode.
+ in create's callback function, and when we successfully do a
+ read_inode.
OBJ_2BCREATED is set in the beginning of the create function, so we
know that we should wait.
- create/delete: delete should wait until the object is created
diff --git a/fs/exofs/Kbuild b/fs/exofs/Kbuild
index cc2d22db119..2d0f757fda3 100644
--- a/fs/exofs/Kbuild
+++ b/fs/exofs/Kbuild
@@ -12,5 +12,5 @@
# Kbuild - Gets included from the Kernels Makefile and build system
#
-exofs-y := osd.o inode.o file.o symlink.o namei.o dir.o super.o
+exofs-y := ios.o inode.o file.o symlink.o namei.o dir.o super.o
obj-$(CONFIG_EXOFS_FS) += exofs.o
diff --git a/fs/exofs/common.h b/fs/exofs/common.h
index c6718e4817f..b1b178e6171 100644
--- a/fs/exofs/common.h
+++ b/fs/exofs/common.h
@@ -49,6 +49,7 @@
#define EXOFS_MIN_PID 0x10000 /* Smallest partition ID */
#define EXOFS_OBJ_OFF 0x10000 /* offset for objects */
#define EXOFS_SUPER_ID 0x10000 /* object ID for on-disk superblock */
+#define EXOFS_DEVTABLE_ID 0x10001 /* object ID for on-disk device table */
#define EXOFS_ROOT_ID 0x10002 /* object ID for root directory */
/* exofs Application specific page/attribute */
@@ -78,17 +79,67 @@ enum {
#define EXOFS_SUPER_MAGIC 0x5DF5
/*
- * The file system control block - stored in an object's data (mainly, the one
- * with ID EXOFS_SUPER_ID). This is where the in-memory superblock is stored
- * on disk. Right now it just has a magic value, which is basically a sanity
- * check on our ability to communicate with the object store.
+ * The file system control block - stored in object EXOFS_SUPER_ID's data.
+ * This is where the in-memory superblock is stored on disk.
*/
+enum {EXOFS_FSCB_VER = 1, EXOFS_DT_VER = 1};
struct exofs_fscb {
__le64 s_nextid; /* Highest object ID used */
- __le32 s_numfiles; /* Number of files on fs */
+ __le64 s_numfiles; /* Number of files on fs */
+ __le32 s_version; /* == EXOFS_FSCB_VER */
__le16 s_magic; /* Magic signature */
__le16 s_newfs; /* Non-zero if this is a new fs */
-};
+
+ /* From here on it's a static part, only written by mkexofs */
+ __le64 s_dev_table_oid; /* Resurved, not used */
+ __le64 s_dev_table_count; /* == 0 means no dev_table */
+} __packed;
+
+/*
+ * Describes the raid used in the FS. It is part of the device table.
+ * This here is taken from the pNFS-objects definition. In exofs we
+ * use one raid policy through-out the filesystem. (NOTE: the funny
+ * alignment at begining. We take care of it at exofs_device_table.
+ */
+struct exofs_dt_data_map {
+ __le32 cb_num_comps;
+ __le64 cb_stripe_unit;
+ __le32 cb_group_width;
+ __le32 cb_group_depth;
+ __le32 cb_mirror_cnt;
+ __le32 cb_raid_algorithm;
+} __packed;
+
+/*
+ * This is an osd device information descriptor. It is a single entry in
+ * the exofs device table. It describes an osd target lun which
+ * contains data belonging to this FS. (Same partition_id on all devices)
+ */
+struct exofs_dt_device_info {
+ __le32 systemid_len;
+ u8 systemid[OSD_SYSTEMID_LEN];
+ __le64 long_name_offset; /* If !0 then offset-in-file */
+ __le32 osdname_len; /* */
+ u8 osdname[44]; /* Embbeded, Ususally an asci uuid */
+} __packed;
+
+/*
+ * The EXOFS device table - stored in object EXOFS_DEVTABLE_ID's data.
+ * It contains the raid used for this multy-device FS and an array of
+ * participating devices.
+ */
+struct exofs_device_table {
+ __le32 dt_version; /* == EXOFS_DT_VER */
+ struct exofs_dt_data_map dt_data_map; /* Raid policy to use */
+
+ /* Resurved space For future use. Total includeing this:
+ * (8 * sizeof(le64))
+ */
+ __le64 __Resurved[4];
+
+ __le64 dt_num_devices; /* Array size */
+ struct exofs_dt_device_info dt_dev_table[]; /* Array of devices */
+} __packed;
/****************************************************************************
* inode-related things
@@ -155,22 +206,4 @@ enum {
(((name_len) + offsetof(struct exofs_dir_entry, name) + \
EXOFS_DIR_ROUND) & ~EXOFS_DIR_ROUND)
-/*************************
- * function declarations *
- *************************/
-/* osd.c */
-void exofs_make_credential(u8 cred_a[OSD_CAP_LEN],
- const struct osd_obj_id *obj);
-
-int exofs_check_ok_resid(struct osd_request *or, u64 *in_resid, u64 *out_resid);
-static inline int exofs_check_ok(struct osd_request *or)
-{
- return exofs_check_ok_resid(or, NULL, NULL);
-}
-int exofs_sync_op(struct osd_request *or, int timeout, u8 *cred);
-int exofs_async_op(struct osd_request *or,
- osd_req_done_fn *async_done, void *caller_context, u8 *cred);
-
-int extract_attr_from_req(struct osd_request *or, struct osd_attr *attr);
-
#endif /*ifndef __EXOFS_COM_H__*/
diff --git a/fs/exofs/exofs.h b/fs/exofs/exofs.h
index 5ec72e020b2..c35fd462398 100644
--- a/fs/exofs/exofs.h
+++ b/fs/exofs/exofs.h
@@ -30,13 +30,17 @@
* along with exofs; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#ifndef __EXOFS_H__
+#define __EXOFS_H__
#include <linux/fs.h>
#include <linux/time.h>
#include "common.h"
-#ifndef __EXOFS_H__
-#define __EXOFS_H__
+/* FIXME: Remove once pnfs hits mainline
+ * #include <linux/exportfs/pnfs_osd_xdr.h>
+ */
+#include "pnfs.h"
#define EXOFS_ERR(fmt, a...) printk(KERN_ERR "exofs: " fmt, ##a)
@@ -55,7 +59,7 @@
* our extension to the in-memory superblock
*/
struct exofs_sb_info {
- struct osd_dev *s_dev; /* returned by get_osd_dev */
+ struct exofs_fscb s_fscb; /* Written often, pre-allocate*/
osd_id s_pid; /* partition ID of file system*/
int s_timeout; /* timeout for OSD operations */
uint64_t s_nextid; /* highest object ID used */
@@ -63,7 +67,11 @@ struct exofs_sb_info {
spinlock_t s_next_gen_lock; /* spinlock for gen # update */
u32 s_next_generation; /* next gen # to use */
atomic_t s_curr_pending; /* number of pending commands */
- uint8_t s_cred[OSD_CAP_LEN]; /* all-powerful credential */
+ uint8_t s_cred[OSD_CAP_LEN]; /* credential for the fscb */
+
+ struct pnfs_osd_data_map data_map; /* Default raid to use */
+ unsigned s_numdevs; /* Num of devices in array */
+ struct osd_dev *s_ods[1]; /* Variable length, minimum 1 */
};
/*
@@ -79,6 +87,50 @@ struct exofs_i_info {
struct inode vfs_inode; /* normal in-memory inode */
};
+static inline osd_id exofs_oi_objno(struct exofs_i_info *oi)
+{
+ return oi->vfs_inode.i_ino + EXOFS_OBJ_OFF;
+}
+
+struct exofs_io_state;
+typedef void (*exofs_io_done_fn)(struct exofs_io_state *or, void *private);
+
+struct exofs_io_state {
+ struct kref kref;
+
+ void *private;
+ exofs_io_done_fn done;
+
+ struct exofs_sb_info *sbi;
+ struct osd_obj_id obj;
+ u8 *cred;
+
+ /* Global read/write IO*/
+ loff_t offset;
+ unsigned long length;
+ void *kern_buff;
+ struct bio *bio;
+
+ /* Attributes */
+ unsigned in_attr_len;
+ struct osd_attr *in_attr;
+ unsigned out_attr_len;
+ struct osd_attr *out_attr;
+
+ /* Variable array of size numdevs */
+ unsigned numdevs;
+ struct exofs_per_dev_state {
+ struct osd_request *or;
+ struct bio *bio;
+ } per_dev[];
+};
+
+static inline unsigned exofs_io_state_size(unsigned numdevs)
+{
+ return sizeof(struct exofs_io_state) +
+ sizeof(struct exofs_per_dev_state) * numdevs;
+}
+
/*
* our inode flags
*/
@@ -130,6 +182,42 @@ static inline struct exofs_i_info *exofs_i(struct inode *inode)
/*************************
* function declarations *
*************************/
+
+/* ios.c */
+void exofs_make_credential(u8 cred_a[OSD_CAP_LEN],
+ const struct osd_obj_id *obj);
+int exofs_read_kern(struct osd_dev *od, u8 *cred, struct osd_obj_id *obj,
+ u64 offset, void *p, unsigned length);
+
+int exofs_get_io_state(struct exofs_sb_info *sbi, struct exofs_io_state** ios);
+void exofs_put_io_state(struct exofs_io_state *ios);
+
+int exofs_check_io(struct exofs_io_state *ios, u64 *resid);
+
+int exofs_sbi_create(struct exofs_io_state *ios);
+int exofs_sbi_remove(struct exofs_io_state *ios);
+int exofs_sbi_write(struct exofs_io_state *ios);
+int exofs_sbi_read(struct exofs_io_state *ios);
+
+int extract_attr_from_ios(struct exofs_io_state *ios, struct osd_attr *attr);
+
+int exofs_oi_truncate(struct exofs_i_info *oi, u64 new_len);
+static inline int exofs_oi_write(struct exofs_i_info *oi,
+ struct exofs_io_state *ios)
+{
+ ios->obj.id = exofs_oi_objno(oi);
+ ios->cred = oi->i_cred;
+ return exofs_sbi_write(ios);
+}
+
+static inline int exofs_oi_read(struct exofs_i_info *oi,
+ struct exofs_io_state *ios)
+{
+ ios->obj.id = exofs_oi_objno(oi);
+ ios->cred = oi->i_cred;
+ return exofs_sbi_read(ios);
+}
+
/* inode.c */
void exofs_truncate(struct inode *inode);
int exofs_setattr(struct dentry *, struct iattr *);
@@ -169,6 +257,7 @@ extern const struct file_operations exofs_file_operations;
/* inode.c */
extern const struct address_space_operations exofs_aops;
+extern const struct osd_attr g_attr_logical_length;
/* namei.c */
extern const struct inode_operations exofs_dir_inode_operations;
diff --git a/fs/exofs/inode.c b/fs/exofs/inode.c
index 6c10f747669..698a8636d39 100644
--- a/fs/exofs/inode.c
+++ b/fs/exofs/inode.c
@@ -37,15 +37,18 @@
#include "exofs.h"
-#ifdef CONFIG_EXOFS_DEBUG
-# define EXOFS_DEBUG_OBJ_ISIZE 1
-#endif
+#define EXOFS_DBGMSG2(M...) do {} while (0)
+
+enum { BIO_MAX_PAGES_KMALLOC =
+ (PAGE_SIZE - sizeof(struct bio)) / sizeof(struct bio_vec),
+};
struct page_collect {
struct exofs_sb_info *sbi;
struct request_queue *req_q;
struct inode *inode;
unsigned expected_pages;
+ struct exofs_io_state *ios;
struct bio *bio;
unsigned nr_pages;
@@ -54,22 +57,23 @@ struct page_collect {
};
static void _pcol_init(struct page_collect *pcol, unsigned expected_pages,
- struct inode *inode)
+ struct inode *inode)
{
struct exofs_sb_info *sbi = inode->i_sb->s_fs_info;
pcol->sbi = sbi;
- pcol->req_q = osd_request_queue(sbi->s_dev);
+ /* Create master bios on first Q, later on cloning, each clone will be
+ * allocated on it's destination Q
+ */
+ pcol->req_q = osd_request_queue(sbi->s_ods[0]);
pcol->inode = inode;
pcol->expected_pages = expected_pages;
+ pcol->ios = NULL;
pcol->bio = NULL;
pcol->nr_pages = 0;
pcol->length = 0;
pcol->pg_first = -1;
-
- EXOFS_DBGMSG("_pcol_init ino=0x%lx expected_pages=%u\n", inode->i_ino,
- expected_pages);
}
static void _pcol_reset(struct page_collect *pcol)
@@ -80,35 +84,49 @@ static void _pcol_reset(struct page_collect *pcol)
pcol->nr_pages = 0;
pcol->length = 0;
pcol->pg_first = -1;
- EXOFS_DBGMSG("_pcol_reset ino=0x%lx expected_pages=%u\n",
- pcol->inode->i_ino, pcol->expected_pages);
+ pcol->ios = NULL;
/* this is probably the end of the loop but in writes
* it might not end here. don't be left with nothing
*/
if (!pcol->expected_pages)
- pcol->expected_pages = 128;
+ pcol->expected_pages = BIO_MAX_PAGES_KMALLOC;
}
static int pcol_try_alloc(struct page_collect *pcol)
{
- int pages = min_t(unsigned, pcol->expected_pages, BIO_MAX_PAGES);
+ int pages = min_t(unsigned, pcol->expected_pages,
+ BIO_MAX_PAGES_KMALLOC);
+
+ if (!pcol->ios) { /* First time allocate io_state */
+ int ret = exofs_get_io_state(pcol->sbi, &pcol->ios);
+
+ if (ret)
+ return ret;
+ }
for (; pages; pages >>= 1) {
- pcol->bio = bio_alloc(GFP_KERNEL, pages);
+ pcol->bio = bio_kmalloc(GFP_KERNEL, pages);
if (likely(pcol->bio))
return 0;
}
- EXOFS_ERR("Failed to kcalloc expected_pages=%u\n",
+ EXOFS_ERR("Failed to bio_kmalloc expected_pages=%u\n",
pcol->expected_pages);
return -ENOMEM;
}
static void pcol_free(struct page_collect *pcol)
{
- bio_put(pcol->bio);
- pcol->bio = NULL;
+ if (pcol->bio) {
+ bio_put(pcol->bio);
+ pcol->bio = NULL;
+ }
+
+ if (pcol->ios) {
+ exofs_put_io_state(pcol->ios);
+ pcol->ios = NULL;
+ }
}
static int pcol_add_page(struct page_collect *pcol, struct page *page,
@@ -161,22 +179,17 @@ static void update_write_page(struct page *page, int ret)
/* Called at the end of reads, to optionally unlock pages and update their
* status.
*/
-static int __readpages_done(struct osd_request *or, struct page_collect *pcol,
- bool do_unlock)
+static int __readpages_done(struct page_collect *pcol, bool do_unlock)
{
struct bio_vec *bvec;
int i;
u64 resid;
u64 good_bytes;
u64 length = 0;
- int ret = exofs_check_ok_resid(or, &resid, NULL);
-
- osd_end_request(or);
+ int ret = exofs_check_io(pcol->ios, &resid);
if (likely(!ret))
good_bytes = pcol->length;
- else if (!resid)
- good_bytes = 0;
else
good_bytes = pcol->length - resid;
@@ -198,7 +211,7 @@ static int __readpages_done(struct osd_request *or, struct page_collect *pcol,
else
page_stat = ret;
- EXOFS_DBGMSG(" readpages_done(0x%lx, 0x%lx) %s\n",
+ EXOFS_DBGMSG2(" readpages_done(0x%lx, 0x%lx) %s\n",
inode->i_ino, page->index,
page_stat ? "bad_bytes" : "good_bytes");
@@ -214,13 +227,13 @@ static int __readpages_done(struct osd_request *or, struct page_collect *pcol,
}
/* callback of async reads */
-static void readpages_done(struct osd_request *or, void *p)
+static void readpages_done(struct exofs_io_state *ios, void *p)
{
struct page_collect *pcol = p;
- __readpages_done(or, pcol, true);
+ __readpages_done(pcol, true);
atomic_dec(&pcol->sbi->s_curr_pending);
- kfree(p);
+ kfree(pcol);
}
static void _unlock_pcol_pages(struct page_collect *pcol, int ret, int rw)
@@ -238,17 +251,13 @@ static void _unlock_pcol_pages(struct page_collect *pcol, int ret, int rw)
unlock_page(page);
}
- pcol_free(pcol);
}
static int read_exec(struct page_collect *pcol, bool is_sync)
{
struct exofs_i_info *oi = exofs_i(pcol->inode);
- struct osd_obj_id obj = {pcol->sbi->s_pid,
- pcol->inode->i_ino + EXOFS_OBJ_OFF};
- struct osd_request *or = NULL;
+ struct exofs_io_state *ios = pcol->ios;
struct page_collect *pcol_copy = NULL;
- loff_t i_start = pcol->pg_first << PAGE_CACHE_SHIFT;
int ret;
if (!pcol->bio)
@@ -257,17 +266,13 @@ static int read_exec(struct page_collect *pcol, bool is_sync)
/* see comment in _readpage() about sync reads */
WARN_ON(is_sync && (pcol->nr_pages != 1));
- or = osd_start_request(pcol->sbi->s_dev, GFP_KERNEL);
- if (unlikely(!or)) {
- ret = -ENOMEM;
- goto err;
- }
-
- osd_req_read(or, &obj, i_start, pcol->bio, pcol->length);
+ ios->bio = pcol->bio;
+ ios->length = pcol->length;
+ ios->offset = pcol->pg_first << PAGE_CACHE_SHIFT;
if (is_sync) {
- exofs_sync_op(or, pcol->sbi->s_timeout, oi->i_cred);
- return __readpages_done(or, pcol, false);
+ exofs_oi_read(oi, pcol->ios);
+ return __readpages_done(pcol, false);
}
pcol_copy = kmalloc(sizeof(*pcol_copy), GFP_KERNEL);
@@ -277,14 +282,16 @@ static int read_exec(struct page_collect *pcol, bool is_sync)
}
*pcol_copy = *pcol;
- ret = exofs_async_op(or, readpages_done, pcol_copy, oi->i_cred);
+ ios->done = readpages_done;
+ ios->private = pcol_copy;
+ ret = exofs_oi_read(oi, ios);
if (unlikely(ret))
goto err;
atomic_inc(&pcol->sbi->s_curr_pending);
EXOFS_DBGMSG("read_exec obj=0x%llx start=0x%llx length=0x%lx\n",
- obj.id, _LLU(i_start), pcol->length);
+ ios->obj.id, _LLU(ios->offset), pcol->length);
/* pages ownership was passed to pcol_copy */
_pcol_reset(pcol);
@@ -293,12 +300,10 @@ static int read_exec(struct page_collect *pcol, bool is_sync)
err:
if (!is_sync)
_unlock_pcol_pages(pcol, ret, READ);
- else /* Pages unlocked by caller in sync mode only free bio */
- pcol_free(pcol);
+
+ pcol_free(pcol);
kfree(pcol_copy);
- if (or)
- osd_end_request(or);
return ret;
}
@@ -370,12 +375,12 @@ try_again:
if (len != PAGE_CACHE_SIZE)
zero_user(page, len, PAGE_CACHE_SIZE - len);
- EXOFS_DBGMSG(" readpage_strip(0x%lx, 0x%lx) len=0x%zx\n",
+ EXOFS_DBGMSG2(" readpage_strip(0x%lx, 0x%lx) len=0x%zx\n",
inode->i_ino, page->index, len);
ret = pcol_add_page(pcol, page, len);
if (ret) {
- EXOFS_DBGMSG("Failed pcol_add_page pages[i]=%p "
+ EXOFS_DBGMSG2("Failed pcol_add_page pages[i]=%p "
"this_len=0x%zx nr_pages=%u length=0x%lx\n",
page, len, pcol->nr_pages, pcol->length);
@@ -419,9 +424,8 @@ static int _readpage(struct page *page, bool is_sync)
_pcol_init(&pcol, 1, page->mapping->host);
- /* readpage_strip might call read_exec(,async) inside at several places
- * but this is safe for is_async=0 since read_exec will not do anything
- * when we have a single page.
+ /* readpage_strip might call read_exec(,is_sync==false) at several
+ * places but not if we have a single page.
*/
ret = readpage_strip(&pcol, page);
if (ret) {
@@ -440,8 +444,8 @@ static int exofs_readpage(struct file *file, struct page *page)
return _readpage(page, false);
}
-/* Callback for osd_write. All writes are asynchronouse */
-static void writepages_done(struct osd_request *or, void *p)
+/* Callback for osd_write. All writes are asynchronous */
+static void writepages_done(struct exofs_io_state *ios, void *p)
{
struct page_collect *pcol = p;
struct bio_vec *bvec;
@@ -449,16 +453,12 @@ static void writepages_done(struct osd_request *or, void *p)
u64 resid;
u64 good_bytes;
u64 length = 0;
+ int ret = exofs_check_io(ios, &resid);
- int ret = exofs_check_ok_resid(or, NULL, &resid);
-
- osd_end_request(or);
atomic_dec(&pcol->sbi->s_curr_pending);
if (likely(!ret))
good_bytes = pcol->length;
- else if (!resid)
- good_bytes = 0;
else
good_bytes = pcol->length - resid;
@@ -482,7 +482,7 @@ static void writepages_done(struct osd_request *or, void *p)
update_write_page(page, page_stat);
unlock_page(page);
- EXOFS_DBGMSG(" writepages_done(0x%lx, 0x%lx) status=%d\n",
+ EXOFS_DBGMSG2(" writepages_done(0x%lx, 0x%lx) status=%d\n",
inode->i_ino, page->index, page_stat);
length += bvec->bv_len;
@@ -496,23 +496,13 @@ static void writepages_done(struct osd_request *or, void *p)
static int write_exec(struct page_collect *pcol)
{
struct exofs_i_info *oi = exofs_i(pcol->inode);
- struct osd_obj_id obj = {pcol->sbi->s_pid,
- pcol->inode->i_ino + EXOFS_OBJ_OFF};
- struct osd_request *or = NULL;
+ struct exofs_io_state *ios = pcol->ios;
struct page_collect *pcol_copy = NULL;
- loff_t i_start = pcol->pg_first << PAGE_CACHE_SHIFT;
int ret;
if (!pcol->bio)
return 0;
- or = osd_start_request(pcol->sbi->s_dev, GFP_KERNEL);
- if (unlikely(!or)) {
- EXOFS_ERR("write_exec: Faild to osd_start_request()\n");
- ret = -ENOMEM;
- goto err;
- }
-
pcol_copy = kmalloc(sizeof(*pcol_copy), GFP_KERNEL);
if (!pcol_copy) {
EXOFS_ERR("write_exec: Faild to kmalloc(pcol)\n");
@@ -523,16 +513,22 @@ static int write_exec(struct page_collect *pcol)
*pcol_copy = *pcol;
pcol_copy->bio->bi_rw |= (1 << BIO_RW); /* FIXME: bio_set_dir() */
- osd_req_write(or, &obj, i_start, pcol_copy->bio, pcol_copy->length);
- ret = exofs_async_op(or, writepages_done, pcol_copy, oi->i_cred);
+
+ ios->bio = pcol_copy->bio;
+ ios->offset = pcol_copy->pg_first << PAGE_CACHE_SHIFT;
+ ios->length = pcol_copy->length;
+ ios->done = writepages_done;
+ ios->private = pcol_copy;
+
+ ret = exofs_oi_write(oi, ios);
if (unlikely(ret)) {
- EXOFS_ERR("write_exec: exofs_async_op() Faild\n");
+ EXOFS_ERR("write_exec: exofs_oi_write() Faild\n");
goto err;
}
atomic_inc(&pcol->sbi->s_curr_pending);
EXOFS_DBGMSG("write_exec(0x%lx, 0x%llx) start=0x%llx length=0x%lx\n",
- pcol->inode->i_ino, pcol->pg_first, _LLU(i_start),
+ pcol->inode->i_ino, pcol->pg_first, _LLU(ios->offset),
pcol->length);
/* pages ownership was passed to pcol_copy */
_pcol_reset(pcol);
@@ -540,9 +536,9 @@ static int write_exec(struct page_collect *pcol)
err:
_unlock_pcol_pages(pcol, ret, WRITE);
+ pcol_free(pcol);
kfree(pcol_copy);
- if (or)
- osd_end_request(or);
+
return ret;
}
@@ -586,6 +582,9 @@ static int writepage_strip(struct page *page,
if (PageError(page))
ClearPageError(page);
unlock_page(page);
+ EXOFS_DBGMSG("writepage_strip(0x%lx, 0x%lx) "
+ "outside the limits\n",
+ inode->i_ino, page->index);
return 0;
}
}
@@ -600,6 +599,9 @@ try_again:
ret = write_exec(pcol);
if (unlikely(ret))
goto fail;
+
+ EXOFS_DBGMSG("writepage_strip(0x%lx, 0x%lx) Discontinuity\n",
+ inode->i_ino, page->index);
goto try_again;
}
@@ -609,7 +611,7 @@ try_again:
goto fail;
}
- EXOFS_DBGMSG(" writepage_strip(0x%lx, 0x%lx) len=0x%zx\n",
+ EXOFS_DBGMSG2(" writepage_strip(0x%lx, 0x%lx) len=0x%zx\n",
inode->i_ino, page->index, len);
ret = pcol_add_page(pcol, page, len);
@@ -634,6 +636,8 @@ try_again:
return 0;
fail:
+ EXOFS_DBGMSG("Error: writepage_strip(0x%lx, 0x%lx)=>%d\n",
+ inode->i_ino, page->index, ret);
set_bit(AS_EIO, &page->mapping->flags);
unlock_page(page);
return ret;
@@ -652,14 +656,17 @@ static int exofs_writepages(struct address_space *mapping,
wbc->range_end >> PAGE_CACHE_SHIFT;
if (start || end)
- expected_pages = min(end - start + 1, 32L);
+ expected_pages = end - start + 1;
else
expected_pages = mapping->nrpages;
- EXOFS_DBGMSG("inode(0x%lx) wbc->start=0x%llx wbc->end=0x%llx"
- " m->nrpages=%lu start=0x%lx end=0x%lx\n",
+ if (expected_pages < 32L)
+ expected_pages = 32L;
+
+ EXOFS_DBGMSG("inode(0x%lx) wbc->start=0x%llx wbc->end=0x%llx "
+ "nrpages=%lu start=0x%lx end=0x%lx expected_pages=%ld\n",
mapping->host->i_ino, wbc->range_start, wbc->range_end,
- mapping->nrpages, start, end);
+ mapping->nrpages, start, end, expected_pages);
_pcol_init(&pcol, expected_pages, mapping->host);
@@ -771,19 +778,28 @@ static int exofs_get_block(struct inode *inode, sector_t iblock,
const struct osd_attr g_attr_logical_length = ATTR_DEF(
OSD_APAGE_OBJECT_INFORMATION, OSD_ATTR_OI_LOGICAL_LENGTH, 8);
+static int _do_truncate(struct inode *inode)
+{
+ struct exofs_i_info *oi = exofs_i(inode);
+ loff_t isize = i_size_read(inode);
+ int ret;
+
+ inode->i_mtime = inode->i_ctime = CURRENT_TIME;
+
+ nobh_truncate_page(inode->i_mapping, isize, exofs_get_block);
+
+ ret = exofs_oi_truncate(oi, (u64)isize);
+ EXOFS_DBGMSG("(0x%lx) size=0x%llx\n", inode->i_ino, isize);
+ return ret;
+}
+
/*
* Truncate a file to the specified size - all we have to do is set the size
* attribute. We make sure the object exists first.
*/
void exofs_truncate(struct inode *inode)
{
- struct exofs_sb_info *sbi = inode->i_sb->s_fs_info;
struct exofs_i_info *oi = exofs_i(inode);
- struct osd_obj_id obj = {sbi->s_pid, inode->i_ino + EXOFS_OBJ_OFF};
- struct osd_request *or;
- struct osd_attr attr;
- loff_t isize = i_size_read(inode);
- __be64 newsize;
int ret;
if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)
@@ -793,22 +809,6 @@ void exofs_truncate(struct inode *inode)
return;
if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
return;
- inode->i_mtime = inode->i_ctime = CURRENT_TIME;
-
- nobh_truncate_page(inode->i_mapping, isize, exofs_get_block);
-
- or = osd_start_request(sbi->s_dev, GFP_KERNEL);
- if (unlikely(!or)) {
- EXOFS_ERR("ERROR: exofs_truncate: osd_start_request failed\n");
- goto fail;
- }
-
- osd_req_set_attributes(or, &obj);
-
- newsize = cpu_to_be64((u64)isize);
- attr = g_attr_logical_length;
- attr.val_ptr = &newsize;
- osd_req_add_set_attr_list(or, &attr, 1);
/* if we are about to truncate an object, and it hasn't been
* created yet, wait
@@ -816,8 +816,7 @@ void exofs_truncate(struct inode *inode)
if (unlikely(wait_obj_created(oi)))
goto fail;
- ret = exofs_sync_op(or, sbi->s_timeout, oi->i_cred);
- osd_end_request(or);
+ ret = _do_truncate(inode);
if (ret)
goto fail;
@@ -847,65 +846,62 @@ int exofs_setattr(struct dentry *dentry, struct iattr *iattr)
/*
* Read an inode from the OSD, and return it as is. We also return the size
- * attribute in the 'sanity' argument if we got compiled with debugging turned
- * on.
+ * attribute in the 'obj_size' argument.
*/
static int exofs_get_inode(struct super_block *sb, struct exofs_i_info *oi,
- struct exofs_fcb *inode, uint64_t *sanity)
+ struct exofs_fcb *inode, uint64_t *obj_size)
{
struct exofs_sb_info *sbi = sb->s_fs_info;
- struct osd_request *or;
- struct osd_attr attr;
- struct osd_obj_id obj = {sbi->s_pid,
- oi->vfs_inode.i_ino + EXOFS_OBJ_OFF};
+ struct osd_attr attrs[2];
+ struct exofs_io_state *ios;
int ret;
- exofs_make_credential(oi->i_cred, &obj);
-
- or = osd_start_request(sbi->s_dev, GFP_KERNEL);
- if (unlikely(!or)) {
- EXOFS_ERR("exofs_get_inode: osd_start_request failed.\n");
- return -ENOMEM;
+ *obj_size = ~0;
+ ret = exofs_get_io_state(sbi, &ios);
+ if (unlikely(ret)) {
+ EXOFS_ERR("%s: exofs_get_io_state failed.\n", __func__);
+ return ret;
}
- osd_req_get_attributes(or, &obj);
- /* we need the inode attribute */
- osd_req_add_get_attr_list(or, &g_attr_inode_data, 1);
+ ios->obj.id = exofs_oi_objno(oi);
+ exofs_make_credential(oi->i_cred, &ios->obj);
+ ios->cred = oi->i_cred;
-#ifdef EXOFS_DEBUG_OBJ_ISIZE
- /* we get the size attributes to do a sanity check */
- osd_req_add_get_attr_list(or, &g_attr_logical_length, 1);
-#endif
+ attrs[0] = g_attr_inode_data;
+ attrs[1] = g_attr_logical_length;
+ ios->in_attr = attrs;
+ ios->in_attr_len = ARRAY_SIZE(attrs);
- ret = exofs_sync_op(or, sbi->s_timeout, oi->i_cred);
+ ret = exofs_sbi_read(ios);
if (ret)
goto out;
- attr = g_attr_inode_data;
- ret = extract_attr_from_req(or, &attr);
+ ret = extract_attr_from_ios(ios, &attrs[0]);
if (ret) {
- EXOFS_ERR("exofs_get_inode: extract_attr_from_req failed\n");
+ EXOFS_ERR("%s: extract_attr of inode_data failed\n", __func__);
goto out;
}
+ WARN_ON(attrs[0].len != EXOFS_INO_ATTR_SIZE);
+ memcpy(inode, attrs[0].val_ptr, EXOFS_INO_ATTR_SIZE);
- WARN_ON(attr.len != EXOFS_INO_ATTR_SIZE);
- memcpy(inode, attr.val_ptr, EXOFS_INO_ATTR_SIZE);
-
-#ifdef EXOFS_DEBUG_OBJ_ISIZE
- attr = g_attr_logical_length;
- ret = extract_attr_from_req(or, &attr);
+ ret = extract_attr_from_ios(ios, &attrs[1]);
if (ret) {
- EXOFS_ERR("ERROR: extract attr from or failed\n");
+ EXOFS_ERR("%s: extract_attr of logical_length failed\n",
+ __func__);
goto out;
}
- *sanity = get_unaligned_be64(attr.val_ptr);
-#endif
+ *obj_size = get_unaligned_be64(attrs[1].val_ptr);
out:
- osd_end_request(or);
+ exofs_put_io_state(ios);
return ret;
}
+static void __oi_init(struct exofs_i_info *oi)
+{
+ init_waitqueue_head(&oi->i_wq);
+ oi->i_flags = 0;
+}
/*
* Fill in an inode read from the OSD and set it up for use
*/
@@ -914,7 +910,7 @@ struct inode *exofs_iget(struct super_block *sb, unsigned long ino)
struct exofs_i_info *oi;
struct exofs_fcb fcb;
struct inode *inode;
- uint64_t uninitialized_var(sanity);
+ uint64_t obj_size;
int ret;
inode = iget_locked(sb, ino);
@@ -923,13 +919,13 @@ struct inode *exofs_iget(struct super_block *sb, unsigned long ino)
if (!(inode->i_state & I_NEW))
return inode;
oi = exofs_i(inode);
+ __oi_init(oi);
/* read the inode from the osd */
- ret = exofs_get_inode(sb, oi, &fcb, &sanity);
+ ret = exofs_get_inode(sb, oi, &fcb, &obj_size);
if (ret)
goto bad_inode;
- init_waitqueue_head(&oi->i_wq);
set_obj_created(oi);
/* copy stuff from on-disk struct to in-memory struct */
@@ -947,14 +943,12 @@ struct inode *exofs_iget(struct super_block *sb, unsigned long ino)
inode->i_blkbits = EXOFS_BLKSHIFT;
inode->i_generation = le32_to_cpu(fcb.i_generation);
-#ifdef EXOFS_DEBUG_OBJ_ISIZE
- if ((inode->i_size != sanity) &&
+ if ((inode->i_size != obj_size) &&
(!exofs_inode_is_fast_symlink(inode))) {
- EXOFS_ERR("WARNING: Size of object from inode and "
- "attributes differ (%lld != %llu)\n",
- inode->i_size, _LLU(sanity));
+ EXOFS_ERR("WARNING: Size of inode=%llu != object=%llu\n",
+ inode->i_size, _LLU(obj_size));
+ /* FIXME: call exofs_inode_recovery() */
}
-#endif
oi->i_dir_start_lookup = 0;
@@ -1020,23 +1014,30 @@ int __exofs_wait_obj_created(struct exofs_i_info *oi)
* set the obj_created flag so that other methods know that the object exists on
* the OSD.
*/
-static void create_done(struct osd_request *or, void *p)
+static void create_done(struct exofs_io_state *ios, void *p)
{
struct inode *inode = p;
struct exofs_i_info *oi = exofs_i(inode);
struct exofs_sb_info *sbi = inode->i_sb->s_fs_info;
int ret;
- ret = exofs_check_ok(or);
- osd_end_request(or);
+ ret = exofs_check_io(ios, NULL);
+ exofs_put_io_state(ios);
+
atomic_dec(&sbi->s_curr_pending);
if (unlikely(ret)) {
EXOFS_ERR("object=0x%llx creation faild in pid=0x%llx",
- _LLU(sbi->s_pid), _LLU(inode->i_ino + EXOFS_OBJ_OFF));
- make_bad_inode(inode);
- } else
- set_obj_created(oi);
+ _LLU(exofs_oi_objno(oi)), _LLU(sbi->s_pid));
+ /*TODO: When FS is corrupted creation can fail, object already
+ * exist. Get rid of this asynchronous creation, if exist
+ * increment the obj counter and try the next object. Until we
+ * succeed. All these dangling objects will be made into lost
+ * files by chkfs.exofs
+ */
+ }
+
+ set_obj_created(oi);
atomic_dec(&inode->i_count);
wake_up(&oi->i_wq);
@@ -1051,8 +1052,7 @@ struct inode *exofs_new_inode(struct inode *dir, int mode)
struct inode *inode;
struct exofs_i_info *oi;
struct exofs_sb_info *sbi;
- struct osd_request *or;
- struct osd_obj_id obj;
+ struct exofs_io_state *ios;
int ret;
sb = dir->i_sb;
@@ -1061,8 +1061,8 @@ struct inode *exofs_new_inode(struct inode *dir, int mode)
return ERR_PTR(-ENOMEM);
oi = exofs_i(inode);
+ __oi_init(oi);
- init_waitqueue_head(&oi->i_wq);
set_obj_2bcreated(oi);
sbi = sb->s_fs_info;
@@ -1089,28 +1089,28 @@ struct inode *exofs_new_inode(struct inode *dir, int mode)
mark_inode_dirty(inode);
- obj.partition = sbi->s_pid;
- obj.id = inode->i_ino + EXOFS_OBJ_OFF;
- exofs_make_credential(oi->i_cred, &obj);
-
- or = osd_start_request(sbi->s_dev, GFP_KERNEL);
- if (unlikely(!or)) {
- EXOFS_ERR("exofs_new_inode: osd_start_request failed\n");
- return ERR_PTR(-ENOMEM);
+ ret = exofs_get_io_state(sbi, &ios);
+ if (unlikely(ret)) {
+ EXOFS_ERR("exofs_new_inode: exofs_get_io_state failed\n");
+ return ERR_PTR(ret);
}
- osd_req_create_object(or, &obj);
+ ios->obj.id = exofs_oi_objno(oi);
+ exofs_make_credential(oi->i_cred, &ios->obj);
/* increment the refcount so that the inode will still be around when we
* reach the callback
*/
atomic_inc(&inode->i_count);
- ret = exofs_async_op(or, create_done, inode, oi->i_cred);
+ ios->done = create_done;
+ ios->private = inode;
+ ios->cred = oi->i_cred;
+ ret = exofs_sbi_create(ios);
if (ret) {
atomic_dec(&inode->i_count);
- osd_end_request(or);
- return ERR_PTR(-EIO);
+ exofs_put_io_state(ios);
+ return ERR_PTR(ret);
}
atomic_inc(&sbi->s_curr_pending);
@@ -1128,11 +1128,11 @@ struct updatei_args {
/*
* Callback function from exofs_update_inode().
*/
-static void updatei_done(struct osd_request *or, void *p)
+static void updatei_done(struct exofs_io_state *ios, void *p)
{
struct updatei_args *args = p;
- osd_end_request(or);
+ exofs_put_io_state(ios);
atomic_dec(&args->sbi->s_curr_pending);
@@ -1148,8 +1148,7 @@ static int exofs_update_inode(struct inode *inode, int do_sync)
struct exofs_i_info *oi = exofs_i(inode);
struct super_block *sb = inode->i_sb;
struct exofs_sb_info *sbi = sb->s_fs_info;
- struct osd_obj_id obj = {sbi->s_pid, inode->i_ino + EXOFS_OBJ_OFF};
- struct osd_request *or;
+ struct exofs_io_state *ios;
struct osd_attr attr;
struct exofs_fcb *fcb;
struct updatei_args *args;
@@ -1186,18 +1185,16 @@ static int exofs_update_inode(struct inode *inode, int do_sync)
} else
memcpy(fcb->i_data, oi->i_data, sizeof(fcb->i_data));
- or = osd_start_request(sbi->s_dev, GFP_KERNEL);
- if (unlikely(!or)) {
- EXOFS_ERR("exofs_update_inode: osd_start_request failed.\n");
- ret = -ENOMEM;
+ ret = exofs_get_io_state(sbi, &ios);
+ if (unlikely(ret)) {
+ EXOFS_ERR("%s: exofs_get_io_state failed.\n", __func__);
goto free_args;
}
- osd_req_set_attributes(or, &obj);
-
attr = g_attr_inode_data;
attr.val_ptr = fcb;
- osd_req_add_set_attr_list(or, &attr, 1);
+ ios->out_attr_len = 1;
+ ios->out_attr = &attr;
if (!obj_created(oi)) {
EXOFS_DBGMSG("!obj_created\n");
@@ -1206,22 +1203,19 @@ static int exofs_update_inode(struct inode *inode, int do_sync)
EXOFS_DBGMSG("wait_event done\n");
}
- if (do_sync) {
- ret = exofs_sync_op(or, sbi->s_timeout, oi->i_cred);
- osd_end_request(or);
- goto free_args;
- } else {
+ if (!do_sync) {
args->sbi = sbi;
+ ios->done = updatei_done;
+ ios->private = args;
+ }
- ret = exofs_async_op(or, updatei_done, args, oi->i_cred);
- if (ret) {
- osd_end_request(or);
- goto free_args;
- }
+ ret = exofs_oi_write(oi, ios);
+ if (!do_sync && !ret) {
atomic_inc(&sbi->s_curr_pending);
goto out; /* deallocation in updatei_done */
}
+ exofs_put_io_state(ios);
free_args:
kfree(args);
out:
@@ -1238,11 +1232,12 @@ int exofs_write_inode(struct inode *inode, int wait)
* Callback function from exofs_delete_inode() - don't have much cleaning up to
* do.
*/
-static void delete_done(struct osd_request *or, void *p)
+static void delete_done(struct exofs_io_state *ios, void *p)
{
- struct exofs_sb_info *sbi;
- osd_end_request(or);
- sbi = p;
+ struct exofs_sb_info *sbi = p;
+
+ exofs_put_io_state(ios);
+
atomic_dec(&sbi->s_curr_pending);
}
@@ -1256,8 +1251,7 @@ void exofs_delete_inode(struct inode *inode)
struct exofs_i_info *oi = exofs_i(inode);
struct super_block *sb = inode->i_sb;
struct exofs_sb_info *sbi = sb->s_fs_info;
- struct osd_obj_id obj = {sbi->s_pid, inode->i_ino + EXOFS_OBJ_OFF};
- struct osd_request *or;
+ struct exofs_io_state *ios;
int ret;
truncate_inode_pages(&inode->i_data, 0);
@@ -1274,25 +1268,26 @@ void exofs_delete_inode(struct inode *inode)
clear_inode(inode);
- or = osd_start_request(sbi->s_dev, GFP_KERNEL);
- if (unlikely(!or)) {
- EXOFS_ERR("exofs_delete_inode: osd_start_request failed\n");
+ ret = exofs_get_io_state(sbi, &ios);
+ if (unlikely(ret)) {
+ EXOFS_ERR("%s: exofs_get_io_state failed\n", __func__);
return;
}
- osd_req_remove_object(or, &obj);
-
/* if we are deleting an obj that hasn't been created yet, wait */
if (!obj_created(oi)) {
BUG_ON(!obj_2bcreated(oi));
wait_event(oi->i_wq, obj_created(oi));
}
- ret = exofs_async_op(or, delete_done, sbi, oi->i_cred);
+ ios->obj.id = exofs_oi_objno(oi);
+ ios->done = delete_done;
+ ios->private = sbi;
+ ios->cred = oi->i_cred;
+ ret = exofs_sbi_remove(ios);
if (ret) {
- EXOFS_ERR(
- "ERROR: @exofs_delete_inode exofs_async_op failed\n");
- osd_end_request(or);
+ EXOFS_ERR("%s: exofs_sbi_remove failed\n", __func__);
+ exofs_put_io_state(ios);
return;
}
atomic_inc(&sbi->s_curr_pending);
diff --git a/fs/exofs/ios.c b/fs/exofs/ios.c
new file mode 100644
index 00000000000..5bad01fa1f9
--- /dev/null
+++ b/fs/exofs/ios.c
@@ -0,0 +1,421 @@
+/*
+ * Copyright (C) 2005, 2006
+ * Avishay Traeger (avishay@gmail.com)
+ * Copyright (C) 2008, 2009
+ * Boaz Harrosh <bharrosh@panasas.com>
+ *
+ * This file is part of exofs.
+ *
+ * exofs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation. Since it is based on ext2, and the only
+ * valid version of GPL for the Linux kernel is version 2, the only valid
+ * version of GPL for exofs is version 2.
+ *
+ * exofs is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with exofs; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <scsi/scsi_device.h>
+
+#include "exofs.h"
+
+void exofs_make_credential(u8 cred_a[OSD_CAP_LEN], const struct osd_obj_id *obj)
+{
+ osd_sec_init_nosec_doall_caps(cred_a, obj, false, true);
+}
+
+int exofs_read_kern(struct osd_dev *od, u8 *cred, struct osd_obj_id *obj,
+ u64 offset, void *p, unsigned length)
+{
+ struct osd_request *or = osd_start_request(od, GFP_KERNEL);
+/* struct osd_sense_info osi = {.key = 0};*/
+ int ret;
+
+ if (unlikely(!or)) {
+ EXOFS_DBGMSG("%s: osd_start_request failed.\n", __func__);
+ return -ENOMEM;
+ }
+ ret = osd_req_read_kern(or, obj, offset, p, length);
+ if (unlikely(ret)) {
+ EXOFS_DBGMSG("%s: osd_req_read_kern failed.\n", __func__);
+ goto out;
+ }
+
+ ret = osd_finalize_request(or, 0, cred, NULL);
+ if (unlikely(ret)) {
+ EXOFS_DBGMSG("Faild to osd_finalize_request() => %d\n", ret);
+ goto out;
+ }
+
+ ret = osd_execute_request(or);
+ if (unlikely(ret))
+ EXOFS_DBGMSG("osd_execute_request() => %d\n", ret);
+ /* osd_req_decode_sense(or, ret); */
+
+out:
+ osd_end_request(or);
+ return ret;
+}
+
+int exofs_get_io_state(struct exofs_sb_info *sbi, struct exofs_io_state** pios)
+{
+ struct exofs_io_state *ios;
+
+ /*TODO: Maybe use kmem_cach per sbi of size
+ * exofs_io_state_size(sbi->s_numdevs)
+ */
+ ios = kzalloc(exofs_io_state_size(sbi->s_numdevs), GFP_KERNEL);
+ if (unlikely(!ios)) {
+ *pios = NULL;
+ return -ENOMEM;
+ }
+
+ ios->sbi = sbi;
+ ios->obj.partition = sbi->s_pid;
+ *pios = ios;
+ return 0;
+}
+
+void exofs_put_io_state(struct exofs_io_state *ios)
+{
+ if (ios) {
+ unsigned i;
+
+ for (i = 0; i < ios->numdevs; i++) {
+ struct exofs_per_dev_state *per_dev = &ios->per_dev[i];
+
+ if (per_dev->or)
+ osd_end_request(per_dev->or);
+ if (per_dev->bio)
+ bio_put(per_dev->bio);
+ }
+
+ kfree(ios);
+ }
+}
+
+static void _sync_done(struct exofs_io_state *ios, void *p)
+{
+ struct completion *waiting = p;
+
+ complete(waiting);
+}
+
+static void _last_io(struct kref *kref)
+{
+ struct exofs_io_state *ios = container_of(
+ kref, struct exofs_io_state, kref);
+
+ ios->done(ios, ios->private);
+}
+
+static void _done_io(struct osd_request *or, void *p)
+{
+ struct exofs_io_state *ios = p;
+
+ kref_put(&ios->kref, _last_io);
+}
+
+static int exofs_io_execute(struct exofs_io_state *ios)
+{
+ DECLARE_COMPLETION_ONSTACK(wait);
+ bool sync = (ios->done == NULL);
+ int i, ret;
+
+ if (sync) {
+ ios->done = _sync_done;
+ ios->private = &wait;
+ }
+
+ for (i = 0; i < ios->numdevs; i++) {
+ struct osd_request *or = ios->per_dev[i].or;
+ if (unlikely(!or))
+ continue;
+
+ ret = osd_finalize_request(or, 0, ios->cred, NULL);
+ if (unlikely(ret)) {
+ EXOFS_DBGMSG("Faild to osd_finalize_request() => %d\n",
+ ret);
+ return ret;
+ }
+ }
+
+ kref_init(&ios->kref);
+
+ for (i = 0; i < ios->numdevs; i++) {
+ struct osd_request *or = ios->per_dev[i].or;
+ if (unlikely(!or))
+ continue;
+
+ kref_get(&ios->kref);
+ osd_execute_request_async(or, _done_io, ios);
+ }
+
+ kref_put(&ios->kref, _last_io);
+ ret = 0;
+
+ if (sync) {
+ wait_for_completion(&wait);
+ ret = exofs_check_io(ios, NULL);
+ }
+ return ret;
+}
+
+int exofs_check_io(struct exofs_io_state *ios, u64 *resid)
+{
+ enum osd_err_priority acumulated_osd_err = 0;
+ int acumulated_lin_err = 0;
+ int i;
+
+ for (i = 0; i < ios->numdevs; i++) {
+ struct osd_sense_info osi;
+ int ret = osd_req_decode_sense(ios->per_dev[i].or, &osi);
+
+ if (likely(!ret))
+ continue;
+
+ if (unlikely(ret == -EFAULT)) {
+ EXOFS_DBGMSG("%s: EFAULT Need page clear\n", __func__);
+ /*FIXME: All the pages in this device range should:
+ * clear_highpage(page);
+ */
+ }
+
+ if (osi.osd_err_pri >= acumulated_osd_err) {
+ acumulated_osd_err = osi.osd_err_pri;
+ acumulated_lin_err = ret;
+ }
+ }
+
+ /* TODO: raid specific residual calculations */
+ if (resid) {
+ if (likely(!acumulated_lin_err))
+ *resid = 0;
+ else
+ *resid = ios->length;
+ }
+
+ return acumulated_lin_err;
+}
+
+int exofs_sbi_create(struct exofs_io_state *ios)
+{
+ int i, ret;
+
+ for (i = 0; i < ios->sbi->s_numdevs; i++) {
+ struct osd_request *or;
+
+ or = osd_start_request(ios->sbi->s_ods[i], GFP_KERNEL);
+ if (unlikely(!or)) {
+ EXOFS_ERR("%s: osd_start_request failed\n", __func__);
+ ret = -ENOMEM;
+ goto out;
+ }
+ ios->per_dev[i].or = or;
+ ios->numdevs++;
+
+ osd_req_create_object(or, &ios->obj);
+ }
+ ret = exofs_io_execute(ios);
+
+out:
+ return ret;
+}
+
+int exofs_sbi_remove(struct exofs_io_state *ios)
+{
+ int i, ret;
+
+ for (i = 0; i < ios->sbi->s_numdevs; i++) {
+ struct osd_request *or;
+
+ or = osd_start_request(ios->sbi->s_ods[i], GFP_KERNEL);
+ if (unlikely(!or)) {
+ EXOFS_ERR("%s: osd_start_request failed\n", __func__);
+ ret = -ENOMEM;
+ goto out;
+ }
+ ios->per_dev[i].or = or;
+ ios->numdevs++;
+
+ osd_req_remove_object(or, &ios->obj);
+ }
+ ret = exofs_io_execute(ios);
+
+out:
+ return ret;
+}
+
+int exofs_sbi_write(struct exofs_io_state *ios)
+{
+ int i, ret;
+
+ for (i = 0; i < ios->sbi->s_numdevs; i++) {
+ struct osd_request *or;
+
+ or = osd_start_request(ios->sbi->s_ods[i], GFP_KERNEL);
+ if (unlikely(!or)) {
+ EXOFS_ERR("%s: osd_start_request failed\n", __func__);
+ ret = -ENOMEM;
+ goto out;
+ }
+ ios->per_dev[i].or = or;
+ ios->numdevs++;
+
+ if (ios->bio) {
+ struct bio *bio;
+
+ if (i != 0) {
+ bio = bio_kmalloc(GFP_KERNEL,
+ ios->bio->bi_max_vecs);
+ if (unlikely(!bio)) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ __bio_clone(bio, ios->bio);
+ bio->bi_bdev = NULL;
+ bio->bi_next = NULL;
+ ios->per_dev[i].bio = bio;
+ } else {
+ bio = ios->bio;
+ }
+
+ osd_req_write(or, &ios->obj, ios->offset, bio,
+ ios->length);
+/* EXOFS_DBGMSG("write sync=%d\n", sync);*/
+ } else if (ios->kern_buff) {
+ osd_req_write_kern(or, &ios->obj, ios->offset,
+ ios->kern_buff, ios->length);
+/* EXOFS_DBGMSG("write_kern sync=%d\n", sync);*/
+ } else {
+ osd_req_set_attributes(or, &ios->obj);
+/* EXOFS_DBGMSG("set_attributes sync=%d\n", sync);*/
+ }
+
+ if (ios->out_attr)
+ osd_req_add_set_attr_list(or, ios->out_attr,
+ ios->out_attr_len);
+
+ if (ios->in_attr)
+ osd_req_add_get_attr_list(or, ios->in_attr,
+ ios->in_attr_len);
+ }
+ ret = exofs_io_execute(ios);
+
+out:
+ return ret;
+}
+
+int exofs_sbi_read(struct exofs_io_state *ios)
+{
+ int i, ret;
+
+ for (i = 0; i < 1; i++) {
+ struct osd_request *or;
+ unsigned first_dev = (unsigned)ios->obj.id;
+
+ first_dev %= ios->sbi->s_numdevs;
+ or = osd_start_request(ios->sbi->s_ods[first_dev], GFP_KERNEL);
+ if (unlikely(!or)) {
+ EXOFS_ERR("%s: osd_start_request failed\n", __func__);
+ ret = -ENOMEM;
+ goto out;
+ }
+ ios->per_dev[i].or = or;
+ ios->numdevs++;
+
+ if (ios->bio) {
+ osd_req_read(or, &ios->obj, ios->offset, ios->bio,
+ ios->length);
+/* EXOFS_DBGMSG("read sync=%d\n", sync);*/
+ } else if (ios->kern_buff) {
+ osd_req_read_kern(or, &ios->obj, ios->offset,
+ ios->kern_buff, ios->length);
+/* EXOFS_DBGMSG("read_kern sync=%d\n", sync);*/
+ } else {
+ osd_req_get_attributes(or, &ios->obj);
+/* EXOFS_DBGMSG("get_attributes sync=%d\n", sync);*/
+ }
+
+ if (ios->out_attr)
+ osd_req_add_set_attr_list(or, ios->out_attr,
+ ios->out_attr_len);
+
+ if (ios->in_attr)
+ osd_req_add_get_attr_list(or, ios->in_attr,
+ ios->in_attr_len);
+ }
+ ret = exofs_io_execute(ios);
+
+out:
+ return ret;
+}
+
+int extract_attr_from_ios(struct exofs_io_state *ios, struct osd_attr *attr)
+{
+ struct osd_attr cur_attr = {.attr_page = 0}; /* start with zeros */
+ void *iter = NULL;
+ int nelem;
+
+ do {
+ nelem = 1;
+ osd_req_decode_get_attr_list(ios->per_dev[0].or,
+ &cur_attr, &nelem, &iter);
+ if ((cur_attr.attr_page == attr->attr_page) &&
+ (cur_attr.attr_id == attr->attr_id)) {
+ attr->len = cur_attr.len;
+ attr->val_ptr = cur_attr.val_ptr;
+ return 0;
+ }
+ } while (iter);
+
+ return -EIO;
+}
+
+int exofs_oi_truncate(struct exofs_i_info *oi, u64 size)
+{
+ struct exofs_sb_info *sbi = oi->vfs_inode.i_sb->s_fs_info;
+ struct exofs_io_state *ios;
+ struct osd_attr attr;
+ __be64 newsize;
+ int i, ret;
+
+ if (exofs_get_io_state(sbi, &ios))
+ return -ENOMEM;
+
+ ios->obj.id = exofs_oi_objno(oi);
+ ios->cred = oi->i_cred;
+
+ newsize = cpu_to_be64(size);
+ attr = g_attr_logical_length;
+ attr.val_ptr = &newsize;
+
+ for (i = 0; i < sbi->s_numdevs; i++) {
+ struct osd_request *or;
+
+ or = osd_start_request(sbi->s_ods[i], GFP_KERNEL);
+ if (unlikely(!or)) {
+ EXOFS_ERR("%s: osd_start_request failed\n", __func__);
+ ret = -ENOMEM;
+ goto out;
+ }
+ ios->per_dev[i].or = or;
+ ios->numdevs++;
+
+ osd_req_set_attributes(or, &ios->obj);
+ osd_req_add_set_attr_list(or, &attr, 1);
+ }
+ ret = exofs_io_execute(ios);
+
+out:
+ exofs_put_io_state(ios);
+ return ret;
+}
diff --git a/fs/exofs/osd.c b/fs/exofs/osd.c
deleted file mode 100644
index 4372542df28..00000000000
--- a/fs/exofs/osd.c
+++ /dev/null
@@ -1,125 +0,0 @@
-/*
- * Copyright (C) 2005, 2006
- * Avishay Traeger (avishay@gmail.com)
- * Copyright (C) 2008, 2009
- * Boaz Harrosh <bharrosh@panasas.com>
- *
- * This file is part of exofs.
- *
- * exofs is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation. Since it is based on ext2, and the only
- * valid version of GPL for the Linux kernel is version 2, the only valid
- * version of GPL for exofs is version 2.
- *
- * exofs is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with exofs; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <scsi/scsi_device.h>
-#include <scsi/osd_sense.h>
-
-#include "exofs.h"
-
-int exofs_check_ok_resid(struct osd_request *or, u64 *in_resid, u64 *out_resid)
-{
- struct osd_sense_info osi;
- int ret = osd_req_decode_sense(or, &osi);
-
- if (ret) { /* translate to Linux codes */
- if (osi.additional_code == scsi_invalid_field_in_cdb) {
- if (osi.cdb_field_offset == OSD_CFO_STARTING_BYTE)
- ret = -EFAULT;
- if (osi.cdb_field_offset == OSD_CFO_OBJECT_ID)
- ret = -ENOENT;
- else
- ret = -EINVAL;
- } else if (osi.additional_code == osd_quota_error)
- ret = -ENOSPC;
- else
- ret = -EIO;
- }
-
- /* FIXME: should be include in osd_sense_info */
- if (in_resid)
- *in_resid = or->in.req ? or->in.req->resid_len : 0;
-
- if (out_resid)
- *out_resid = or->out.req ? or->out.req->resid_len : 0;
-
- return ret;
-}
-
-void exofs_make_credential(u8 cred_a[OSD_CAP_LEN], const struct osd_obj_id *obj)
-{
- osd_sec_init_nosec_doall_caps(cred_a, obj, false, true);
-}
-
-/*
- * Perform a synchronous OSD operation.
- */
-int exofs_sync_op(struct osd_request *or, int timeout, uint8_t *credential)
-{
- int ret;
-
- or->timeout = timeout;
- ret = osd_finalize_request(or, 0, credential, NULL);
- if (ret) {
- EXOFS_DBGMSG("Faild to osd_finalize_request() => %d\n", ret);
- return ret;
- }
-
- ret = osd_execute_request(or);
-
- if (ret)
- EXOFS_DBGMSG("osd_execute_request() => %d\n", ret);
- /* osd_req_decode_sense(or, ret); */
- return ret;
-}
-
-/*
- * Perform an asynchronous OSD operation.
- */
-int exofs_async_op(struct osd_request *or, osd_req_done_fn *async_done,
- void *caller_context, u8 *cred)
-{
- int ret;
-
- ret = osd_finalize_request(or, 0, cred, NULL);
- if (ret) {
- EXOFS_DBGMSG("Faild to osd_finalize_request() => %d\n", ret);
- return ret;
- }
-
- ret = osd_execute_request_async(or, async_done, caller_context);
-
- if (ret)
- EXOFS_DBGMSG("osd_execute_request_async() => %d\n", ret);
- return ret;
-}
-
-int extract_attr_from_req(struct osd_request *or, struct osd_attr *attr)
-{
- struct osd_attr cur_attr = {.attr_page = 0}; /* start with zeros */
- void *iter = NULL;
- int nelem;
-
- do {
- nelem = 1;
- osd_req_decode_get_attr_list(or, &cur_attr, &nelem, &iter);
- if ((cur_attr.attr_page == attr->attr_page) &&
- (cur_attr.attr_id == attr->attr_id)) {
- attr->len = cur_attr.len;
- attr->val_ptr = cur_attr.val_ptr;
- return 0;
- }
- } while (iter);
-
- return -EIO;
-}
diff --git a/fs/exofs/pnfs.h b/fs/exofs/pnfs.h
new file mode 100644
index 00000000000..423033addd1
--- /dev/null
+++ b/fs/exofs/pnfs.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2008, 2009
+ * Boaz Harrosh <bharrosh@panasas.com>
+ *
+ * This file is part of exofs.
+ *
+ * exofs is free software; you can redistribute it and/or modify it under the
+ * terms of the GNU General Public License version 2 as published by the Free
+ * Software Foundation.
+ *
+ */
+
+/* FIXME: Remove this file once pnfs hits mainline */
+
+#ifndef __EXOFS_PNFS_H__
+#define __EXOFS_PNFS_H__
+
+#if defined(CONFIG_PNFS)
+
+
+/* FIXME: move this file to: linux/exportfs/pnfs_osd_xdr.h */
+#include "../nfs/objlayout/pnfs_osd_xdr.h"
+
+#else /* defined(CONFIG_PNFS) */
+
+enum pnfs_iomode {
+ IOMODE_READ = 1,
+ IOMODE_RW = 2,
+ IOMODE_ANY = 3,
+};
+
+/* Layout Structure */
+enum pnfs_osd_raid_algorithm4 {
+ PNFS_OSD_RAID_0 = 1,
+ PNFS_OSD_RAID_4 = 2,
+ PNFS_OSD_RAID_5 = 3,
+ PNFS_OSD_RAID_PQ = 4 /* Reed-Solomon P+Q */
+};
+
+struct pnfs_osd_data_map {
+ u32 odm_num_comps;
+ u64 odm_stripe_unit;
+ u32 odm_group_width;
+ u32 odm_group_depth;
+ u32 odm_mirror_cnt;
+ u32 odm_raid_algorithm;
+};
+
+#endif /* else defined(CONFIG_PNFS) */
+
+#endif /* __EXOFS_PNFS_H__ */
diff --git a/fs/exofs/super.c b/fs/exofs/super.c
index 9f500dec3b5..a1d1e77b12e 100644
--- a/fs/exofs/super.c
+++ b/fs/exofs/super.c
@@ -203,49 +203,45 @@ int exofs_sync_fs(struct super_block *sb, int wait)
{
struct exofs_sb_info *sbi;
struct exofs_fscb *fscb;
- struct osd_request *or;
- struct osd_obj_id obj;
+ struct exofs_io_state *ios;
int ret = -ENOMEM;
- fscb = kzalloc(sizeof(struct exofs_fscb), GFP_KERNEL);
- if (!fscb) {
- EXOFS_ERR("exofs_write_super: memory allocation failed.\n");
- return -ENOMEM;
- }
-
lock_super(sb);
sbi = sb->s_fs_info;
+ fscb = &sbi->s_fscb;
+
+ ret = exofs_get_io_state(sbi, &ios);
+ if (ret)
+ goto out;
+
+ /* Note: We only write the changing part of the fscb. .i.e upto the
+ * the fscb->s_dev_table_oid member. There is no read-modify-write
+ * here.
+ */
+ ios->length = offsetof(struct exofs_fscb, s_dev_table_oid);
+ memset(fscb, 0, ios->length);
fscb->s_nextid = cpu_to_le64(sbi->s_nextid);
fscb->s_numfiles = cpu_to_le32(sbi->s_numfiles);
fscb->s_magic = cpu_to_le16(sb->s_magic);
fscb->s_newfs = 0;
+ fscb->s_version = EXOFS_FSCB_VER;
- or = osd_start_request(sbi->s_dev, GFP_KERNEL);
- if (unlikely(!or)) {
- EXOFS_ERR("exofs_write_super: osd_start_request failed.\n");
- goto out;
- }
+ ios->obj.id = EXOFS_SUPER_ID;
+ ios->offset = 0;
+ ios->kern_buff = fscb;
+ ios->cred = sbi->s_cred;
- obj.partition = sbi->s_pid;
- obj.id = EXOFS_SUPER_ID;
- ret = osd_req_write_kern(or, &obj, 0, fscb, sizeof(*fscb));
+ ret = exofs_sbi_write(ios);
if (unlikely(ret)) {
- EXOFS_ERR("exofs_write_super: osd_req_write_kern failed.\n");
- goto out;
- }
-
- ret = exofs_sync_op(or, sbi->s_timeout, sbi->s_cred);
- if (unlikely(ret)) {
- EXOFS_ERR("exofs_write_super: exofs_sync_op failed.\n");
+ EXOFS_ERR("%s: exofs_sbi_write failed.\n", __func__);
goto out;
}
sb->s_dirt = 0;
out:
- if (or)
- osd_end_request(or);
+ EXOFS_DBGMSG("s_nextid=0x%llx ret=%d\n", _LLU(sbi->s_nextid), ret);
+ exofs_put_io_state(ios);
unlock_super(sb);
- kfree(fscb);
return ret;
}
@@ -257,6 +253,29 @@ static void exofs_write_super(struct super_block *sb)
sb->s_dirt = 0;
}
+static void _exofs_print_device(const char *msg, const char *dev_path,
+ struct osd_dev *od, u64 pid)
+{
+ const struct osd_dev_info *odi = osduld_device_info(od);
+
+ printk(KERN_NOTICE "exofs: %s %s osd_name-%s pid-0x%llx\n",
+ msg, dev_path ?: "", odi->osdname, _LLU(pid));
+}
+
+void exofs_free_sbi(struct exofs_sb_info *sbi)
+{
+ while (sbi->s_numdevs) {
+ int i = --sbi->s_numdevs;
+ struct osd_dev *od = sbi->s_ods[i];
+
+ if (od) {
+ sbi->s_ods[i] = NULL;
+ osduld_put_device(od);
+ }
+ }
+ kfree(sbi);
+}
+
/*
* This function is called when the vfs is freeing the superblock. We just
* need to free our own part.
@@ -279,11 +298,182 @@ static void exofs_put_super(struct super_block *sb)
msecs_to_jiffies(100));
}
- osduld_put_device(sbi->s_dev);
- kfree(sb->s_fs_info);
+ _exofs_print_device("Unmounting", NULL, sbi->s_ods[0], sbi->s_pid);
+
+ exofs_free_sbi(sbi);
sb->s_fs_info = NULL;
}
+static int _read_and_match_data_map(struct exofs_sb_info *sbi, unsigned numdevs,
+ struct exofs_device_table *dt)
+{
+ sbi->data_map.odm_num_comps =
+ le32_to_cpu(dt->dt_data_map.cb_num_comps);
+ sbi->data_map.odm_stripe_unit =
+ le64_to_cpu(dt->dt_data_map.cb_stripe_unit);
+ sbi->data_map.odm_group_width =
+ le32_to_cpu(dt->dt_data_map.cb_group_width);
+ sbi->data_map.odm_group_depth =
+ le32_to_cpu(dt->dt_data_map.cb_group_depth);
+ sbi->data_map.odm_mirror_cnt =
+ le32_to_cpu(dt->dt_data_map.cb_mirror_cnt);
+ sbi->data_map.odm_raid_algorithm =
+ le32_to_cpu(dt->dt_data_map.cb_raid_algorithm);
+
+/* FIXME: Hard coded mirror only for now. if not so do not mount */
+ if ((sbi->data_map.odm_num_comps != numdevs) ||
+ (sbi->data_map.odm_stripe_unit != EXOFS_BLKSIZE) ||
+ (sbi->data_map.odm_raid_algorithm != PNFS_OSD_RAID_0) ||
+ (sbi->data_map.odm_mirror_cnt != (numdevs - 1)))
+ return -EINVAL;
+ else
+ return 0;
+}
+
+/* @odi is valid only as long as @fscb_dev is valid */
+static int exofs_devs_2_odi(struct exofs_dt_device_info *dt_dev,
+ struct osd_dev_info *odi)
+{
+ odi->systemid_len = le32_to_cpu(dt_dev->systemid_len);
+ memcpy(odi->systemid, dt_dev->systemid, odi->systemid_len);
+
+ odi->osdname_len = le32_to_cpu(dt_dev->osdname_len);
+ odi->osdname = dt_dev->osdname;
+
+ /* FIXME support long names. Will need a _put function */
+ if (dt_dev->long_name_offset)
+ return -EINVAL;
+
+ /* Make sure osdname is printable!
+ * mkexofs should give us space for a null-terminator else the
+ * device-table is invalid.
+ */
+ if (unlikely(odi->osdname_len >= sizeof(dt_dev->osdname)))
+ odi->osdname_len = sizeof(dt_dev->osdname) - 1;
+ dt_dev->osdname[odi->osdname_len] = 0;
+
+ /* If it's all zeros something is bad we read past end-of-obj */
+ return !(odi->systemid_len || odi->osdname_len);
+}
+
+static int exofs_read_lookup_dev_table(struct exofs_sb_info **psbi,
+ unsigned table_count)
+{
+ struct exofs_sb_info *sbi = *psbi;
+ struct osd_dev *fscb_od;
+ struct osd_obj_id obj = {.partition = sbi->s_pid,
+ .id = EXOFS_DEVTABLE_ID};
+ struct exofs_device_table *dt;
+ unsigned table_bytes = table_count * sizeof(dt->dt_dev_table[0]) +
+ sizeof(*dt);
+ unsigned numdevs, i;
+ int ret;
+
+ dt = kmalloc(table_bytes, GFP_KERNEL);
+ if (unlikely(!dt)) {
+ EXOFS_ERR("ERROR: allocating %x bytes for device table\n",
+ table_bytes);
+ return -ENOMEM;
+ }
+
+ fscb_od = sbi->s_ods[0];
+ sbi->s_ods[0] = NULL;
+ sbi->s_numdevs = 0;
+ ret = exofs_read_kern(fscb_od, sbi->s_cred, &obj, 0, dt, table_bytes);
+ if (unlikely(ret)) {
+ EXOFS_ERR("ERROR: reading device table\n");
+ goto out;
+ }
+
+ numdevs = le64_to_cpu(dt->dt_num_devices);
+ if (unlikely(!numdevs)) {
+ ret = -EINVAL;
+ goto out;
+ }
+ WARN_ON(table_count != numdevs);
+
+ ret = _read_and_match_data_map(sbi, numdevs, dt);
+ if (unlikely(ret))
+ goto out;
+
+ if (likely(numdevs > 1)) {
+ unsigned size = numdevs * sizeof(sbi->s_ods[0]);
+
+ sbi = krealloc(sbi, sizeof(*sbi) + size, GFP_KERNEL);
+ if (unlikely(!sbi)) {
+ ret = -ENOMEM;
+ goto out;
+ }
+ memset(&sbi->s_ods[1], 0, size - sizeof(sbi->s_ods[0]));
+ *psbi = sbi;
+ }
+
+ for (i = 0; i < numdevs; i++) {
+ struct exofs_fscb fscb;
+ struct osd_dev_info odi;
+ struct osd_dev *od;
+
+ if (exofs_devs_2_odi(&dt->dt_dev_table[i], &odi)) {
+ EXOFS_ERR("ERROR: Read all-zeros device entry\n");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ printk(KERN_NOTICE "Add device[%d]: osd_name-%s\n",
+ i, odi.osdname);
+
+ /* On all devices the device table is identical. The user can
+ * specify any one of the participating devices on the command
+ * line. We always keep them in device-table order.
+ */
+ if (fscb_od && osduld_device_same(fscb_od, &odi)) {
+ sbi->s_ods[i] = fscb_od;
+ ++sbi->s_numdevs;
+ fscb_od = NULL;
+ continue;
+ }
+
+ od = osduld_info_lookup(&odi);
+ if (unlikely(IS_ERR(od))) {
+ ret = PTR_ERR(od);
+ EXOFS_ERR("ERROR: device requested is not found "
+ "osd_name-%s =>%d\n", odi.osdname, ret);
+ goto out;
+ }
+
+ sbi->s_ods[i] = od;
+ ++sbi->s_numdevs;
+
+ /* Read the fscb of the other devices to make sure the FS
+ * partition is there.
+ */
+ ret = exofs_read_kern(od, sbi->s_cred, &obj, 0, &fscb,
+ sizeof(fscb));
+ if (unlikely(ret)) {
+ EXOFS_ERR("ERROR: Malformed participating device "
+ "error reading fscb osd_name-%s\n",
+ odi.osdname);
+ goto out;
+ }
+
+ /* TODO: verify other information is correct and FS-uuid
+ * matches. Benny what did you say about device table
+ * generation and old devices?
+ */
+ }
+
+out:
+ kfree(dt);
+ if (unlikely(!ret && fscb_od)) {
+ EXOFS_ERR(
+ "ERROR: Bad device-table container device not present\n");
+ osduld_put_device(fscb_od);
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
/*
* Read the superblock from the OSD and fill in the fields
*/
@@ -292,24 +482,25 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent)
struct inode *root;
struct exofs_mountopt *opts = data;
struct exofs_sb_info *sbi; /*extended info */
+ struct osd_dev *od; /* Master device */
struct exofs_fscb fscb; /*on-disk superblock info */
- struct osd_request *or = NULL;
struct osd_obj_id obj;
+ unsigned table_count;
int ret;
sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
if (!sbi)
return -ENOMEM;
- sb->s_fs_info = sbi;
/* use mount options to fill superblock */
- sbi->s_dev = osduld_path_lookup(opts->dev_name);
- if (IS_ERR(sbi->s_dev)) {
- ret = PTR_ERR(sbi->s_dev);
- sbi->s_dev = NULL;
+ od = osduld_path_lookup(opts->dev_name);
+ if (IS_ERR(od)) {
+ ret = PTR_ERR(od);
goto free_sbi;
}
+ sbi->s_ods[0] = od;
+ sbi->s_numdevs = 1;
sbi->s_pid = opts->pid;
sbi->s_timeout = opts->timeout;
@@ -323,35 +514,13 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent)
sb->s_bdev = NULL;
sb->s_dev = 0;
- /* read data from on-disk superblock object */
obj.partition = sbi->s_pid;
obj.id = EXOFS_SUPER_ID;
exofs_make_credential(sbi->s_cred, &obj);
- or = osd_start_request(sbi->s_dev, GFP_KERNEL);
- if (unlikely(!or)) {
- if (!silent)
- EXOFS_ERR(
- "exofs_fill_super: osd_start_request failed.\n");
- ret = -ENOMEM;
- goto free_sbi;
- }
- ret = osd_req_read_kern(or, &obj, 0, &fscb, sizeof(fscb));
- if (unlikely(ret)) {
- if (!silent)
- EXOFS_ERR(
- "exofs_fill_super: osd_req_read_kern failed.\n");
- ret = -ENOMEM;
- goto free_sbi;
- }
-
- ret = exofs_sync_op(or, sbi->s_timeout, sbi->s_cred);
- if (unlikely(ret)) {
- if (!silent)
- EXOFS_ERR("exofs_fill_super: exofs_sync_op failed.\n");
- ret = -EIO;
+ ret = exofs_read_kern(od, sbi->s_cred, &obj, 0, &fscb, sizeof(fscb));
+ if (unlikely(ret))
goto free_sbi;
- }
sb->s_magic = le16_to_cpu(fscb.s_magic);
sbi->s_nextid = le64_to_cpu(fscb.s_nextid);
@@ -364,12 +533,26 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent)
ret = -EINVAL;
goto free_sbi;
}
+ if (le32_to_cpu(fscb.s_version) != EXOFS_FSCB_VER) {
+ EXOFS_ERR("ERROR: Bad FSCB version expected-%d got-%d\n",
+ EXOFS_FSCB_VER, le32_to_cpu(fscb.s_version));
+ ret = -EINVAL;
+ goto free_sbi;
+ }
/* start generation numbers from a random point */
get_random_bytes(&sbi->s_next_generation, sizeof(u32));
spin_lock_init(&sbi->s_next_gen_lock);
+ table_count = le64_to_cpu(fscb.s_dev_table_count);
+ if (table_count) {
+ ret = exofs_read_lookup_dev_table(&sbi, table_count);
+ if (unlikely(ret))
+ goto free_sbi;
+ }
+
/* set up operation vectors */
+ sb->s_fs_info = sbi;
sb->s_op = &exofs_sops;
sb->s_export_op = &exofs_export_ops;
root = exofs_iget(sb, EXOFS_ROOT_ID - EXOFS_OBJ_OFF);
@@ -395,16 +578,15 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent)
goto free_sbi;
}
- ret = 0;
-out:
- if (or)
- osd_end_request(or);
- return ret;
+ _exofs_print_device("Mounting", opts->dev_name, sbi->s_ods[0],
+ sbi->s_pid);
+ return 0;
free_sbi:
- osduld_put_device(sbi->s_dev); /* NULL safe */
- kfree(sbi);
- goto out;
+ EXOFS_ERR("Unable to mount exofs on %s pid=0x%llx err=%d\n",
+ opts->dev_name, sbi->s_pid, ret);
+ exofs_free_sbi(sbi);
+ return ret;
}
/*
@@ -433,7 +615,7 @@ static int exofs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
struct exofs_sb_info *sbi = sb->s_fs_info;
- struct osd_obj_id obj = {sbi->s_pid, 0};
+ struct exofs_io_state *ios;
struct osd_attr attrs[] = {
ATTR_DEF(OSD_APAGE_PARTITION_QUOTAS,
OSD_ATTR_PQ_CAPACITY_QUOTA, sizeof(__be64)),
@@ -442,32 +624,33 @@ static int exofs_statfs(struct dentry *dentry, struct kstatfs *buf)
};
uint64_t capacity = ULLONG_MAX;
uint64_t used = ULLONG_MAX;
- struct osd_request *or;
uint8_t cred_a[OSD_CAP_LEN];
int ret;
- /* get used/capacity attributes */
- exofs_make_credential(cred_a, &obj);
-
- or = osd_start_request(sbi->s_dev, GFP_KERNEL);
- if (unlikely(!or)) {
- EXOFS_DBGMSG("exofs_statfs: osd_start_request failed.\n");
- return -ENOMEM;
+ ret = exofs_get_io_state(sbi, &ios);
+ if (ret) {
+ EXOFS_DBGMSG("exofs_get_io_state failed.\n");
+ return ret;
}
- osd_req_get_attributes(or, &obj);
- osd_req_add_get_attr_list(or, attrs, ARRAY_SIZE(attrs));
- ret = exofs_sync_op(or, sbi->s_timeout, cred_a);
+ exofs_make_credential(cred_a, &ios->obj);
+ ios->cred = sbi->s_cred;
+ ios->in_attr = attrs;
+ ios->in_attr_len = ARRAY_SIZE(attrs);
+
+ ret = exofs_sbi_read(ios);
if (unlikely(ret))
goto out;
- ret = extract_attr_from_req(or, &attrs[0]);
- if (likely(!ret))
+ ret = extract_attr_from_ios(ios, &attrs[0]);
+ if (likely(!ret)) {
capacity = get_unaligned_be64(attrs[0].val_ptr);
- else
+ if (unlikely(!capacity))
+ capacity = ULLONG_MAX;
+ } else
EXOFS_DBGMSG("exofs_statfs: get capacity failed.\n");
- ret = extract_attr_from_req(or, &attrs[1]);
+ ret = extract_attr_from_ios(ios, &attrs[1]);
if (likely(!ret))
used = get_unaligned_be64(attrs[1].val_ptr);
else
@@ -476,15 +659,15 @@ static int exofs_statfs(struct dentry *dentry, struct kstatfs *buf)
/* fill in the stats buffer */
buf->f_type = EXOFS_SUPER_MAGIC;
buf->f_bsize = EXOFS_BLKSIZE;
- buf->f_blocks = (capacity >> EXOFS_BLKSHIFT);
- buf->f_bfree = ((capacity - used) >> EXOFS_BLKSHIFT);
+ buf->f_blocks = capacity >> 9;
+ buf->f_bfree = (capacity - used) >> 9;
buf->f_bavail = buf->f_bfree;
buf->f_files = sbi->s_numfiles;
buf->f_ffree = EXOFS_MAX_ID - sbi->s_numfiles;
buf->f_namelen = EXOFS_NAME_LEN;
out:
- osd_end_request(or);
+ exofs_put_io_state(ios);
return ret;
}