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| author | Anand Jain <anand.jain@oracle.com> | 2021-12-16 16:04:12 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-12-22 11:32:37 +0300 |
| commit | a6e7e218a4d6488d56727a7d9aee1b7e78c0c485 (patch) | |
| tree | 123b6815fa4636dcbc5bbdcf7ede3be1880b3cc1 /fs/btrfs | |
| parent | e342c2558016ead462f376b6c6c2ac5efc17f3b1 (diff) | |
| download | linux-a6e7e218a4d6488d56727a7d9aee1b7e78c0c485.tar.xz | |
btrfs: update latest_dev when we create a sprout device
Commit b7cb29e666fe79dda5dbe5f57fb7c92413bf161c upstream.
When we add a device to the seed filesystem (sprouting) it is a new
filesystem (and fsid) on the device added. Update the latest_dev so
that /proc/self/mounts shows the correct device.
Example:
$ btrfstune -S1 /dev/vg/seed
$ mount /dev/vg/seed /btrfs
mount: /btrfs: WARNING: device write-protected, mounted read-only.
$ cat /proc/self/mounts | grep btrfs
/dev/mapper/vg-seed /btrfs btrfs ro,relatime,space_cache,subvolid=5,subvol=/ 0 0
$ btrfs dev add -f /dev/vg/new /btrfs
Before:
$ cat /proc/self/mounts | grep btrfs
/dev/mapper/vg-seed /btrfs btrfs ro,relatime,space_cache,subvolid=5,subvol=/ 0 0
After:
$ cat /proc/self/mounts | grep btrfs
/dev/mapper/vg-new /btrfs btrfs ro,relatime,space_cache,subvolid=5,subvol=/ 0 0
Tested-by: Su Yue <l@damenly.su>
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/btrfs')
| -rw-r--r-- | fs/btrfs/volumes.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 3cf4fe4b6a3f..4aed2dfab699 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -2634,6 +2634,8 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path btrfs_abort_transaction(trans, ret); goto error_trans; } + btrfs_assign_next_active_device(fs_info->fs_devices->latest_dev, + device); } device->fs_devices = fs_devices; |