btrfs currently publishes device membership via sysfs based on the devices present when the file system is mounted. That publishing is not updated when devices are added or removed while mounted. This patch handles those events. Signed-off-by: Jeff Mahoney <jeffm@xxxxxxxx> --- fs/btrfs/volumes.c | 11 +++++++++++ 1 file changed, 11 insertions(+) --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -1704,6 +1704,9 @@ int btrfs_rm_device(struct btrfs_root *r ret = 0; + sysfs_remove_link(root->fs_info->device_dir_kobj, + part_to_dev(bdev->bd_part)->kobj.name); + /* Notify udev that device has changed */ if (bdev) btrfs_kobject_uevent(bdev, KOBJ_CHANGE); @@ -2038,6 +2041,12 @@ int btrfs_init_new_device(struct btrfs_r goto error; } + ret = sysfs_create_link(root->fs_info->device_dir_kobj, + &part_to_dev(bdev->bd_part)->kobj, + part_to_dev(bdev->bd_part)->kobj.name); + if (ret) + goto error; + lock_chunks(root); q = bdev_get_queue(bdev); @@ -2152,6 +2161,8 @@ error_trans: unlock_chunks(root); btrfs_end_transaction(trans, root); rcu_string_free(device->name); + sysfs_remove_link(root->fs_info->device_dir_kobj, + part_to_dev(bdev->bd_part)->kobj.name); kfree(device); error: blkdev_put(bdev, FMODE_EXCL); -- Jeff Mahoney SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
