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authorQu Wenruo <quwenruo@cn.fujitsu.com>2014-07-03 17:36:36 +0800
committerDavid Sterba <dsterba@suse.cz>2014-08-22 15:04:50 +0200
commit23d7f6d9dc0aa42e30fe9642b4e0876354d2c02e (patch)
treea4126379363d41fb397f73df5d532f65104d10f2 /btrfs-find-root.c
parentbc70abad8cddc344bef1378017d159139c89d4ba (diff)
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btrfs-progs: Allow btrfs_read_dev_super() to read all 3 super for super_recover.
Btrfs-progs superblock checksum check is somewhat too restricted for super-recover, since current btrfs-progs will only read the 1st superblock and if you need super-recover the 1st superblock is possibly already damaged. The fix is introducing super_recover parameter for btrfs_read_dev_super() and callers to allow scan backup superblocks if needed. Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz>
Diffstat (limited to 'btrfs-find-root.c')
-rw-r--r--btrfs-find-root.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/btrfs-find-root.c b/btrfs-find-root.c
index 25d79f1..e31a9b5 100644
--- a/btrfs-find-root.c
+++ b/btrfs-find-root.c
@@ -82,7 +82,7 @@ static struct btrfs_root *open_ctree_broken(int fd, const char *device)
return NULL;
}
- ret = btrfs_scan_fs_devices(fd, device, &fs_devices, 0, 1);
+ ret = btrfs_scan_fs_devices(fd, device, &fs_devices, 0, 1, 1);
if (ret)
goto out;
@@ -94,7 +94,7 @@ static struct btrfs_root *open_ctree_broken(int fd, const char *device)
disk_super = fs_info->super_copy;
ret = btrfs_read_dev_super(fs_devices->latest_bdev,
- disk_super, fs_info->super_bytenr);
+ disk_super, fs_info->super_bytenr, 1);
if (ret) {
printk("No valid btrfs found\n");
goto out_devices;