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| author | Eryu Guan <guaneryu@gmail.com> | 2014-10-13 12:42:12 +0800 |
|---|---|---|
| committer | Chris Mason <clm@fb.com> | 2014-11-20 17:14:28 -0800 |
| commit | 2fc9f6baa24ac230166df41ed636224969523341 (patch) | |
| tree | 41ea291cb5ab8d7d1eef3c4c5a49afddec266a1b /include/uapi/linux/btrfs.h | |
| parent | 6b3a4d60dbf7a60b91d810498e8c212f26718efd (diff) | |
| download | op-kernel-dev-2fc9f6baa24ac230166df41ed636224969523341.zip op-kernel-dev-2fc9f6baa24ac230166df41ed636224969523341.tar.gz | |
Btrfs: return failure if btrfs_dev_replace_finishing() failed
device replace could fail due to another running scrub process or any
other errors btrfs_scrub_dev() may hit, but this failure doesn't get
returned to userspace.
The following steps could reproduce this issue
mkfs -t btrfs -f /dev/sdb1 /dev/sdb2
mount /dev/sdb1 /mnt/btrfs
while true; do btrfs scrub start -B /mnt/btrfs >/dev/null 2>&1; done &
btrfs replace start -Bf /dev/sdb2 /dev/sdb3 /mnt/btrfs
# if this replace succeeded, do the following and repeat until
# you see this log in dmesg
# BTRFS: btrfs_scrub_dev(/dev/sdb2, 2, /dev/sdb3) failed -115
#btrfs replace start -Bf /dev/sdb3 /dev/sdb2 /mnt/btrfs
# once you see the error log in dmesg, check return value of
# replace
echo $?
Introduce a new dev replace result
BTRFS_IOCTL_DEV_REPLACE_RESULT_SCRUB_INPROGRESS
to catch -EINPROGRESS explicitly and return other errors directly to
userspace.
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'include/uapi/linux/btrfs.h')
| -rw-r--r-- | include/uapi/linux/btrfs.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/btrfs.h b/include/uapi/linux/btrfs.h index 2f47824..611e1c5 100644 --- a/include/uapi/linux/btrfs.h +++ b/include/uapi/linux/btrfs.h @@ -157,6 +157,7 @@ struct btrfs_ioctl_dev_replace_status_params { #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR 0 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NOT_STARTED 1 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_ALREADY_STARTED 2 +#define BTRFS_IOCTL_DEV_REPLACE_RESULT_SCRUB_INPROGRESS 3 struct btrfs_ioctl_dev_replace_args { __u64 cmd; /* in */ __u64 result; /* out */ |
