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| author | Qu Wenruo <quwenruo@cn.fujitsu.com> | 2015-05-11 16:08:45 +0800 |
|---|---|---|
| committer | David Sterba <dsterba@suse.cz> | 2015-05-14 15:41:07 +0200 |
| commit | 2259f03439bd697b64efdb09dfc75638f24c4b48 (patch) | |
| tree | 4eb36a6e415975ba4412a273c2f378fd508ae3f2 /disk-io.c | |
| parent | 9ae2b8b52fe18efc0aab16ac3a5d1286a495b347 (diff) | |
| download | btrfs-progs-2259f03439bd697b64efdb09dfc75638f24c4b48.tar.gz | |
btrfs-progs: Add open_ctree check for uuid changing
Now open_ctree will exit if it found the superblock is marked
CHANGING_FSID, except given IGNORE_FSID open ctree flags.
Kernel will do the same thing later.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
[removed the chunk tree flag, reworded the error message]
Signed-off-by: David Sterba <dsterba@suse.cz>
Diffstat (limited to 'disk-io.c')
| -rw-r--r-- | disk-io.c | 11 |
1 files changed, 10 insertions, 1 deletions
@@ -49,7 +49,8 @@ static int check_tree_block(struct btrfs_root *root, struct extent_buffer *buf) fs_devices = root->fs_info->fs_devices; while (fs_devices) { - if (!memcmp_extent_buffer(buf, fs_devices->fsid, + if (root->fs_info->ignore_fsid_mismatch || + !memcmp_extent_buffer(buf, fs_devices->fsid, btrfs_header_fsid(), BTRFS_FSID_SIZE)) { ret = 0; @@ -1149,6 +1150,8 @@ static struct btrfs_fs_info *__open_ctree_fd(int fp, const char *path, fs_info->on_restoring = 1; if (flags & OPEN_CTREE_SUPPRESS_CHECK_BLOCK_ERRORS) fs_info->suppress_check_block_errors = 1; + if (flags & OPEN_CTREE_IGNORE_FSID_MISMATCH) + fs_info->ignore_fsid_mismatch = 1; ret = btrfs_scan_fs_devices(fp, path, &fs_devices, sb_bytenr, (flags & OPEN_CTREE_RECOVER_SUPER), @@ -1180,6 +1183,12 @@ static struct btrfs_fs_info *__open_ctree_fd(int fp, const char *path, goto out_devices; } + if (btrfs_super_flags(disk_super) & BTRFS_SUPER_FLAG_CHANGING_FSID && + !fs_info->ignore_fsid_mismatch) { + fprintf(stderr, "ERROR: Filesystem UUID change in progress\n"); + goto out_devices; + } + memcpy(fs_info->fsid, &disk_super->fsid, BTRFS_FSID_SIZE); ret = btrfs_check_fs_compatibility(fs_info->super_copy, |