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Btrfs: sysfs: add support to show replacing target in the sysfs

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This patch will add support to show the replacing target in sysfs
during the process of replacement.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
This commit is contained in:
Anand Jain 2015-03-10 06:38:42 +08:00 committed by David Sterba
parent 4fde46f0cc
commit d2ff1b2008
2 changed files with 7 additions and 1 deletions
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5
fs/btrfs/dev-replace.c
View file

@ -376,6 +376,10 @@ int btrfs_dev_replace_start(struct btrfs_root *root,
WARN_ON(!tgt_device);
dev_replace->tgtdev = tgt_device;
ret = btrfs_kobj_add_device(tgt_device->fs_devices, tgt_device);
if (ret)
btrfs_error(root->fs_info, ret, "kobj add dev failed");
printk_in_rcu(KERN_INFO
"BTRFS: dev_replace from %s (devid %llu) to %s started\n",
src_device->missing ? "<missing disk>" :
@ -584,7 +588,6 @@ static int btrfs_dev_replace_finishing(struct btrfs_fs_info *fs_info,
/* replace the sysfs entry */
btrfs_kobj_rm_device(fs_info->fs_devices, src_device);
btrfs_kobj_add_device(fs_info->fs_devices, tgt_device);
btrfs_rm_dev_replace_free_srcdev(fs_info, src_device);
/* write back the superblocks */

3
fs/btrfs/volumes.c
View file

@ -1940,6 +1940,9 @@ void btrfs_destroy_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
mutex_lock(&uuid_mutex);
WARN_ON(!tgtdev);
mutex_lock(&fs_info->fs_devices->device_list_mutex);
btrfs_kobj_rm_device(fs_info->fs_devices, tgtdev);
if (tgtdev->bdev) {
btrfs_scratch_superblock(tgtdev);
fs_info->fs_devices->open_devices--;