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authorGui Hecheng <guihc.fnst@cn.fujitsu.com>2014-07-07 09:56:51 +0800
committerDavid Sterba <dsterba@suse.cz>2014-08-22 15:07:03 +0200
commitf0884b5dc30c134bcb87a43342ca26d0773295ee (patch)
tree0282d7cb6a2ad324be8380644d0409ca03871e97 /btrfs-image.c
parentacf2652649e7338c89e164dba7c1409946dfb425 (diff)
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btrfs-progs: add mount status check for btrfs-image
When btrfs-image run on a mounted filesystem, the undergoing fs operations may change what you have imaged a while ago. In this case, give a warning to remind the user that he may not get a consistent image he wants. Signed-off-by: Gui Hecheng <guihc.fnst@cn.fujitsu.com> [tweaked the message] Signed-off-by: David Sterba <dsterba@suse.cz>
Diffstat (limited to 'btrfs-image.c')
-rw-r--r--btrfs-image.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/btrfs-image.c b/btrfs-image.c
index 985aa26..cb17f16 100644
--- a/btrfs-image.c
+++ b/btrfs-image.c
@@ -2570,12 +2570,22 @@ int main(int argc, char *argv[])
num_threads = 1;
}
- if (create)
+ if (create) {
+ ret = check_mounted(source);
+ if (ret < 0) {
+ fprintf(stderr, "Could not check mount status: %s\n",
+ strerror(-ret));
+ exit(1);
+ } else if (ret)
+ fprintf(stderr,
+ "WARNING: The device is mounted. Make sure the filesystem is quiescent.\n");
+
ret = create_metadump(source, out, num_threads,
compress_level, sanitize, walk_trees);
- else
+ } else {
ret = restore_metadump(source, out, old_restore, 1,
multi_devices);
+ }
if (ret) {
printk("%s failed (%s)\n", (create) ? "create" : "restore",
strerror(errno));