From: Anand Jain Date: Wed, 4 Oct 2023 15:00:25 +0000 (+0800) Subject: btrfs: disable the seed feature for temp-fsid X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=c47b02c1bddf7c4d56e01bccc99e73ae5309fe07;p=linux.git btrfs: disable the seed feature for temp-fsid 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 Signed-off-by: David Sterba --- diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 81b735f4efc1a..1fdfa9153e30c 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -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;