diff options
| -rw-r--r-- | fs/btrfs/dev-replace.c | 58 | ||||
| -rw-r--r-- | fs/btrfs/dev-replace.h | 4 | ||||
| -rw-r--r-- | fs/btrfs/ioctl.c | 2 |
3 files changed, 41 insertions, 23 deletions
diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c index 1a3d24592859..5aebedf12b5f 100644 --- a/fs/btrfs/dev-replace.c +++ b/fs/btrfs/dev-replace.c @@ -302,8 +302,8 @@ void btrfs_after_dev_replace_commit(struct btrfs_fs_info *fs_info) dev_replace->cursor_left_last_write_of_item; } -int btrfs_dev_replace_start(struct btrfs_root *root, - struct btrfs_ioctl_dev_replace_args *args) +int btrfs_dev_replace_start(struct btrfs_root *root, char *tgtdev_name, + u64 srcdevid, char *srcdev_name, int read_src) { struct btrfs_trans_handle *trans; struct btrfs_fs_info *fs_info = root->fs_info; @@ -312,25 +312,16 @@ int btrfs_dev_replace_start(struct btrfs_root *root, struct btrfs_device *tgt_device = NULL; struct btrfs_device *src_device = NULL; - switch (args->start.cont_reading_from_srcdev_mode) { - case BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_ALWAYS: - case BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_AVOID: - break; - default: - return -EINVAL; - } - /* the disk copy procedure reuses the scrub code */ mutex_lock(&fs_info->volume_mutex); - ret = btrfs_find_device_by_devspec(root, args->start.srcdevid, - args->start.srcdev_name, - &src_device); + ret = btrfs_find_device_by_devspec(root, srcdevid, + srcdev_name, &src_device); if (ret) { mutex_unlock(&fs_info->volume_mutex); return ret; } - ret = btrfs_init_dev_replace_tgtdev(root, args->start.tgtdev_name, + ret = btrfs_init_dev_replace_tgtdev(root, tgtdev_name, src_device, &tgt_device); mutex_unlock(&fs_info->volume_mutex); if (ret) @@ -357,12 +348,11 @@ int btrfs_dev_replace_start(struct btrfs_root *root, break; case BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED: case BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED: - args->result = BTRFS_IOCTL_DEV_REPLACE_RESULT_ALREADY_STARTED; + ret = BTRFS_IOCTL_DEV_REPLACE_RESULT_ALREADY_STARTED; goto leave; } - dev_replace->cont_reading_from_srcdev_mode = - args->start.cont_reading_from_srcdev_mode; + dev_replace->cont_reading_from_srcdev_mode = read_src; WARN_ON(!src_device); dev_replace->srcdev = src_device; WARN_ON(!tgt_device); @@ -389,7 +379,6 @@ int btrfs_dev_replace_start(struct btrfs_root *root, dev_replace->item_needs_writeback = 1; atomic64_set(&dev_replace->num_write_errors, 0); atomic64_set(&dev_replace->num_uncorrectable_read_errors, 0); - args->result = BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR; btrfs_dev_replace_unlock(dev_replace, 1); ret = btrfs_sysfs_add_device_link(tgt_device->fs_devices, tgt_device); @@ -415,10 +404,8 @@ int btrfs_dev_replace_start(struct btrfs_root *root, &dev_replace->scrub_progress, 0, 1); ret = btrfs_dev_replace_finishing(fs_info, ret); - /* don't warn if EINPROGRESS, someone else might be running scrub */ if (ret == -EINPROGRESS) { - args->result = BTRFS_IOCTL_DEV_REPLACE_RESULT_SCRUB_INPROGRESS; - ret = 0; + ret = BTRFS_IOCTL_DEV_REPLACE_RESULT_SCRUB_INPROGRESS; } else { WARN_ON(ret); } @@ -433,6 +420,35 @@ leave: return ret; } +int btrfs_dev_replace_by_ioctl(struct btrfs_root *root, + struct btrfs_ioctl_dev_replace_args *args) +{ + int ret; + + switch (args->start.cont_reading_from_srcdev_mode) { + case BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_ALWAYS: + case BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_AVOID: + break; + default: + return -EINVAL; + } + + if ((args->start.srcdevid == 0 && args->start.srcdev_name[0] == '\0') || + args->start.tgtdev_name[0] == '\0') + return -EINVAL; + + ret = btrfs_dev_replace_start(root, args->start.tgtdev_name, + args->start.srcdevid, + args->start.srcdev_name, + args->start.cont_reading_from_srcdev_mode); + args->result = ret; + /* don't warn if EINPROGRESS, someone else might be running scrub */ + if (ret == BTRFS_IOCTL_DEV_REPLACE_RESULT_SCRUB_INPROGRESS) + ret = 0; + + return ret; +} + /* * blocked until all flighting bios are finished. */ diff --git a/fs/btrfs/dev-replace.h b/fs/btrfs/dev-replace.h index 29e3ef5f96bd..e922b42d91df 100644 --- a/fs/btrfs/dev-replace.h +++ b/fs/btrfs/dev-replace.h @@ -25,8 +25,10 @@ int btrfs_init_dev_replace(struct btrfs_fs_info *fs_info); int btrfs_run_dev_replace(struct btrfs_trans_handle *trans, struct btrfs_fs_info *fs_info); void btrfs_after_dev_replace_commit(struct btrfs_fs_info *fs_info); -int btrfs_dev_replace_start(struct btrfs_root *root, +int btrfs_dev_replace_by_ioctl(struct btrfs_root *root, struct btrfs_ioctl_dev_replace_args *args); +int btrfs_dev_replace_start(struct btrfs_root *root, char *tgtdev_name, + u64 srcdevid, char *srcdev_name, int read_src); void btrfs_dev_replace_status(struct btrfs_fs_info *fs_info, struct btrfs_ioctl_dev_replace_args *args); int btrfs_dev_replace_cancel(struct btrfs_fs_info *fs_info, diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 65903ec5e1c0..36b1ed223509 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -4430,7 +4430,7 @@ static long btrfs_ioctl_dev_replace(struct btrfs_root *root, void __user *arg) 1)) { ret = BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS; } else { - ret = btrfs_dev_replace_start(root, p); + ret = btrfs_dev_replace_by_ioctl(root, p); atomic_set( &root->fs_info->mutually_exclusive_operation_running, 0); |