diff options
| author | Josef Bacik <josef@toxicpanda.com> | 2021-12-15 23:40:00 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2022-03-14 15:13:48 +0300 |
| commit | 914a519b19e84dd5e4c3bf5a24cd892f64f0bdef (patch) | |
| tree | e8802b1f1da9a8d19f49bf6ec7daf1815fb87f80 /fs | |
| parent | 4b3492539907ef53acb06bf0db02dbaaed2bf097 (diff) | |
| download | linux-914a519b19e84dd5e4c3bf5a24cd892f64f0bdef.tar.xz | |
btrfs: disable device manipulation ioctl's EXTENT_TREE_V2
Device add, remove, and replace all require balance, which doesn't work
right now on extent tree v2, so disable these for now.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/ioctl.c | 10 | ||||
| -rw-r--r-- | fs/btrfs/volumes.c | 5 |
2 files changed, 15 insertions, 0 deletions
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index dbb0a8dad770..7a59887a2b54 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -3449,6 +3449,11 @@ static long btrfs_ioctl_add_dev(struct btrfs_fs_info *fs_info, void __user *arg) if (!capable(CAP_SYS_ADMIN)) return -EPERM; + if (btrfs_fs_incompat(fs_info, EXTENT_TREE_V2)) { + btrfs_err(fs_info, "device add not supported on extent tree v2 yet"); + return -EINVAL; + } + if (!btrfs_exclop_start(fs_info, BTRFS_EXCLOP_DEV_ADD)) { if (!btrfs_exclop_start_try_lock(fs_info, BTRFS_EXCLOP_DEV_ADD)) return BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS; @@ -4073,6 +4078,11 @@ static long btrfs_ioctl_dev_replace(struct btrfs_fs_info *fs_info, if (!capable(CAP_SYS_ADMIN)) return -EPERM; + if (btrfs_fs_incompat(fs_info, EXTENT_TREE_V2)) { + btrfs_err(fs_info, "device replace not supported on extent tree v2 yet"); + return -EINVAL; + } + p = memdup_user(arg, sizeof(*p)); if (IS_ERR(p)) return PTR_ERR(p); diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 4c0f8a10e5cd..fa7fee09e39b 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -2085,6 +2085,11 @@ int btrfs_rm_device(struct btrfs_fs_info *fs_info, u64 num_devices; int ret = 0; + if (btrfs_fs_incompat(fs_info, EXTENT_TREE_V2)) { + btrfs_err(fs_info, "device remove not supported on extent tree v2 yet"); + return -EINVAL; + } + /* * The device list in fs_devices is accessed without locks (neither * uuid_mutex nor device_list_mutex) as it won't change on a mounted |