diff options
Diffstat (limited to 'fs/btrfs/extent-tree.c')
| -rw-r--r-- | fs/btrfs/extent-tree.c | 56 |
1 files changed, 55 insertions, 1 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index a1a18ea7b6c..e6a832e3e64 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -3030,7 +3030,9 @@ static void set_avail_alloc_bits(struct btrfs_fs_info *fs_info, u64 flags) /* * @flags: available profiles in extended format (see ctree.h) * - * Returns reduced profile in chunk format. + * Returns reduced profile in chunk format. If profile changing is in + * progress (either running or paused) picks the target profile (if it's + * already available), otherwise falls back to plain reducing. */ u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags) { @@ -3042,6 +3044,34 @@ u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags) u64 num_devices = root->fs_info->fs_devices->rw_devices + root->fs_info->fs_devices->missing_devices; + /* pick restriper's target profile if it's available */ + spin_lock(&root->fs_info->balance_lock); + if (root->fs_info->balance_ctl) { + struct btrfs_balance_control *bctl = root->fs_info->balance_ctl; + u64 tgt = 0; + + if ((flags & BTRFS_BLOCK_GROUP_DATA) && + (bctl->data.flags & BTRFS_BALANCE_ARGS_CONVERT) && + (flags & bctl->data.target)) { + tgt = BTRFS_BLOCK_GROUP_DATA | bctl->data.target; + } else if ((flags & BTRFS_BLOCK_GROUP_SYSTEM) && + (bctl->sys.flags & BTRFS_BALANCE_ARGS_CONVERT) && + (flags & bctl->sys.target)) { + tgt = BTRFS_BLOCK_GROUP_SYSTEM | bctl->sys.target; + } else if ((flags & BTRFS_BLOCK_GROUP_METADATA) && + (bctl->meta.flags & BTRFS_BALANCE_ARGS_CONVERT) && + (flags & bctl->meta.target)) { + tgt = BTRFS_BLOCK_GROUP_METADATA | bctl->meta.target; + } + + if (tgt) { + spin_unlock(&root->fs_info->balance_lock); + flags = tgt; + goto out; + } + } + spin_unlock(&root->fs_info->balance_lock); + if (num_devices == 1) flags &= ~(BTRFS_BLOCK_GROUP_RAID1 | BTRFS_BLOCK_GROUP_RAID0); if (num_devices < 4) @@ -3065,6 +3095,7 @@ u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags) flags &= ~BTRFS_BLOCK_GROUP_RAID0; } +out: /* extended -> chunk profile */ flags &= ~BTRFS_AVAIL_ALLOC_BIT_SINGLE; return flags; @@ -6795,6 +6826,29 @@ static u64 update_block_group_flags(struct btrfs_root *root, u64 flags) u64 stripped = BTRFS_BLOCK_GROUP_RAID0 | BTRFS_BLOCK_GROUP_RAID1 | BTRFS_BLOCK_GROUP_RAID10; + if (root->fs_info->balance_ctl) { + struct btrfs_balance_control *bctl = root->fs_info->balance_ctl; + u64 tgt = 0; + + /* pick restriper's target profile and return */ + if (flags & BTRFS_BLOCK_GROUP_DATA && + bctl->data.flags & BTRFS_BALANCE_ARGS_CONVERT) { + tgt = BTRFS_BLOCK_GROUP_DATA | bctl->data.target; + } else if (flags & BTRFS_BLOCK_GROUP_SYSTEM && + bctl->sys.flags & BTRFS_BALANCE_ARGS_CONVERT) { + tgt = BTRFS_BLOCK_GROUP_SYSTEM | bctl->sys.target; + } else if (flags & BTRFS_BLOCK_GROUP_METADATA && + bctl->meta.flags & BTRFS_BALANCE_ARGS_CONVERT) { + tgt = BTRFS_BLOCK_GROUP_METADATA | bctl->meta.target; + } + + if (tgt) { + /* extended -> chunk profile */ + tgt &= ~BTRFS_AVAIL_ALLOC_BIT_SINGLE; + return tgt; + } + } + /* * we add in the count of missing devices because we want * to make sure that any RAID levels on a degraded FS |