From 6dac13f8e233e50b69df831f6e598a1efb6d3aaa Mon Sep 17 00:00:00 2001 From: Anand Jain Date: Wed, 16 May 2018 10:51:26 +0800 Subject: [PATCH] btrfs: add prefix "balance:" for log messages Kernel logs are very important for the forensic investigations of the issues in general make it easy to use it. This patch adds 'balance:' prefix so that it can be easily searched. Signed-off-by: Anand Jain Reviewed-by: Nikolay Borisov Signed-off-by: David Sterba --- fs/btrfs/volumes.c | 38 ++++++++++++++++++++++++-------------- 1 file changed, 24 insertions(+), 14 deletions(-) diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 8ed90107b727..b6757b53c297 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -3805,7 +3805,7 @@ int btrfs_balance(struct btrfs_fs_info *fs_info, !(bctl->flags & BTRFS_BALANCE_METADATA) || memcmp(&bctl->data, &bctl->meta, sizeof(bctl->data))) { btrfs_err(fs_info, - "with mixed groups data and metadata balance options must be the same"); + "balance: mixed groups data and metadata options must be the same"); ret = -EINVAL; goto out; } @@ -3827,23 +3827,29 @@ int btrfs_balance(struct btrfs_fs_info *fs_info, allowed |= (BTRFS_BLOCK_GROUP_RAID10 | BTRFS_BLOCK_GROUP_RAID6); if (validate_convert_profile(&bctl->data, allowed)) { + int index = btrfs_bg_flags_to_raid_index(bctl->data.target); + btrfs_err(fs_info, - "unable to start balance with target data profile %llu", - bctl->data.target); + "balance: invalid convert data profile %s", + get_raid_name(index)); ret = -EINVAL; goto out; } if (validate_convert_profile(&bctl->meta, allowed)) { + int index = btrfs_bg_flags_to_raid_index(bctl->meta.target); + btrfs_err(fs_info, - "unable to start balance with target metadata profile %llu", - bctl->meta.target); + "balance: invalid convert metadata profile %s", + get_raid_name(index)); ret = -EINVAL; goto out; } if (validate_convert_profile(&bctl->sys, allowed)) { + int index = btrfs_bg_flags_to_raid_index(bctl->sys.target); + btrfs_err(fs_info, - "unable to start balance with target system profile %llu", - bctl->sys.target); + "balance: invalid convert system profile %s", + get_raid_name(index)); ret = -EINVAL; goto out; } @@ -3864,10 +3870,10 @@ int btrfs_balance(struct btrfs_fs_info *fs_info, !(bctl->meta.target & allowed))) { if (bctl->flags & BTRFS_BALANCE_FORCE) { btrfs_info(fs_info, - "force reducing metadata integrity"); + "balance: force reducing metadata integrity"); } else { btrfs_err(fs_info, - "balance will reduce metadata integrity, use force if you want this"); + "balance: reduces metadata integrity, use --force if you want this"); ret = -EINVAL; goto out; } @@ -3881,9 +3887,12 @@ int btrfs_balance(struct btrfs_fs_info *fs_info, bctl->data.target : fs_info->avail_data_alloc_bits; if (btrfs_get_num_tolerated_disk_barrier_failures(meta_target) < btrfs_get_num_tolerated_disk_barrier_failures(data_target)) { + int meta_index = btrfs_bg_flags_to_raid_index(meta_target); + int data_index = btrfs_bg_flags_to_raid_index(data_target); + btrfs_warn(fs_info, - "metadata profile 0x%llx has lower redundancy than data profile 0x%llx", - meta_target, data_target); + "balance: metadata profile %s has lower redundancy than data profile %s", + get_raid_name(meta_index), get_raid_name(data_index)); } ret = insert_balance_item(fs_info, bctl); @@ -3943,7 +3952,7 @@ static int balance_kthread(void *data) mutex_lock(&fs_info->balance_mutex); if (fs_info->balance_ctl) { - btrfs_info(fs_info, "continuing balance"); + btrfs_info(fs_info, "balance: resuming"); ret = btrfs_balance(fs_info, fs_info->balance_ctl, NULL); } mutex_unlock(&fs_info->balance_mutex); @@ -3963,7 +3972,7 @@ int btrfs_resume_balance_async(struct btrfs_fs_info *fs_info) mutex_unlock(&fs_info->balance_mutex); if (btrfs_test_opt(fs_info, SKIP_BALANCE)) { - btrfs_info(fs_info, "force skipping balance"); + btrfs_info(fs_info, "balance: resume skipped"); return 0; } @@ -4037,7 +4046,7 @@ int btrfs_recover_balance(struct btrfs_fs_info *fs_info) */ if (test_and_set_bit(BTRFS_FS_EXCL_OP, &fs_info->flags)) btrfs_warn(fs_info, - "cannot set exclusive op status to balance, resume manually"); + "balance: cannot set exclusive op status, resume manually"); mutex_lock(&fs_info->balance_mutex); BUG_ON(fs_info->balance_ctl); @@ -4118,6 +4127,7 @@ int btrfs_cancel_balance(struct btrfs_fs_info *fs_info) if (fs_info->balance_ctl) { reset_balance_state(fs_info); clear_bit(BTRFS_FS_EXCL_OP, &fs_info->flags); + btrfs_info(fs_info, "balance: canceled"); } } -- 2.30.2