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btrfs: disable the seed feature for temp-fsid

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A seed device is an integral component of the sprout device, which
functions as a multi-device filesystem. Therefore, temp-fsid feature
is not supported.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Anand Jain 2023-10-04 23:00:25 +08:00 committed by David Sterba
parent 000331bb03
commit c47b02c1bd
1 changed files with 8 additions and 0 deletions
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8
fs/btrfs/volumes.c
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@ -571,6 +571,14 @@ static struct btrfs_fs_devices *find_fsid_by_device(
if (btrfs_super_num_devices(disk_super) != 1)
return fsid_fs_devices;
/*
* A seed device is an integral component of the sprout device, which
* functions as a multi-device filesystem. So, temp-fsid feature is
* not supported.
*/
if (btrfs_super_flags(disk_super) & BTRFS_SUPER_FLAG_SEEDING)
return fsid_fs_devices;
/* Try to find a fs_devices by matching devt. */
list_for_each_entry(devt_fs_devices, &fs_uuids, fs_list) {
struct btrfs_device *device;