From 040c52c0aa7c1736522676078ece0483c8596daf Mon Sep 17 00:00:00 2001 From: Brian Foster Date: Mon, 26 Sep 2016 08:32:50 +1000 Subject: [PATCH] xfs: don't warn on buffers not being recovered due to LSN The log recovery buffer validation function is invoked in cases where a buffer update may be skipped due to LSN ordering. If the validation function happens to come across directory conversion situations (e.g., a dir3 block to data conversion), it may warn about seeing a buffer log format of one type and a buffer with a magic number of another. This warning is not valid as the buffer update is ultimately skipped. This is indicated by a current_lsn of NULLCOMMITLSN provided by the caller. As such, update xlog_recover_validate_buf_type() to only warn in such cases when a buffer update is expected. Signed-off-by: Brian Foster Reviewed-by: Dave Chinner Signed-off-by: Dave Chinner --- fs/xfs/xfs_log_recover.c | 58 ++++++++++++++++++---------------------- 1 file changed, 26 insertions(+), 32 deletions(-) diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index bf325f25d4ec..9be763043f28 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -2367,6 +2367,7 @@ xlog_recover_validate_buf_type( __uint32_t magic32; __uint16_t magic16; __uint16_t magicda; + char *warnmsg = NULL; /* * We can only do post recovery validation on items on CRC enabled @@ -2405,31 +2406,27 @@ xlog_recover_validate_buf_type( bp->b_ops = &xfs_rmapbt_buf_ops; break; default: - xfs_warn(mp, "Bad btree block magic!"); - ASSERT(0); + warnmsg = "Bad btree block magic!"; break; } break; case XFS_BLFT_AGF_BUF: if (magic32 != XFS_AGF_MAGIC) { - xfs_warn(mp, "Bad AGF block magic!"); - ASSERT(0); + warnmsg = "Bad AGF block magic!"; break; } bp->b_ops = &xfs_agf_buf_ops; break; case XFS_BLFT_AGFL_BUF: if (magic32 != XFS_AGFL_MAGIC) { - xfs_warn(mp, "Bad AGFL block magic!"); - ASSERT(0); + warnmsg = "Bad AGFL block magic!"; break; } bp->b_ops = &xfs_agfl_buf_ops; break; case XFS_BLFT_AGI_BUF: if (magic32 != XFS_AGI_MAGIC) { - xfs_warn(mp, "Bad AGI block magic!"); - ASSERT(0); + warnmsg = "Bad AGI block magic!"; break; } bp->b_ops = &xfs_agi_buf_ops; @@ -2439,8 +2436,7 @@ xlog_recover_validate_buf_type( case XFS_BLFT_GDQUOT_BUF: #ifdef CONFIG_XFS_QUOTA if (magic16 != XFS_DQUOT_MAGIC) { - xfs_warn(mp, "Bad DQUOT block magic!"); - ASSERT(0); + warnmsg = "Bad DQUOT block magic!"; break; } bp->b_ops = &xfs_dquot_buf_ops; @@ -2452,16 +2448,14 @@ xlog_recover_validate_buf_type( break; case XFS_BLFT_DINO_BUF: if (magic16 != XFS_DINODE_MAGIC) { - xfs_warn(mp, "Bad INODE block magic!"); - ASSERT(0); + warnmsg = "Bad INODE block magic!"; break; } bp->b_ops = &xfs_inode_buf_ops; break; case XFS_BLFT_SYMLINK_BUF: if (magic32 != XFS_SYMLINK_MAGIC) { - xfs_warn(mp, "Bad symlink block magic!"); - ASSERT(0); + warnmsg = "Bad symlink block magic!"; break; } bp->b_ops = &xfs_symlink_buf_ops; @@ -2469,8 +2463,7 @@ xlog_recover_validate_buf_type( case XFS_BLFT_DIR_BLOCK_BUF: if (magic32 != XFS_DIR2_BLOCK_MAGIC && magic32 != XFS_DIR3_BLOCK_MAGIC) { - xfs_warn(mp, "Bad dir block magic!"); - ASSERT(0); + warnmsg = "Bad dir block magic!"; break; } bp->b_ops = &xfs_dir3_block_buf_ops; @@ -2478,8 +2471,7 @@ xlog_recover_validate_buf_type( case XFS_BLFT_DIR_DATA_BUF: if (magic32 != XFS_DIR2_DATA_MAGIC && magic32 != XFS_DIR3_DATA_MAGIC) { - xfs_warn(mp, "Bad dir data magic!"); - ASSERT(0); + warnmsg = "Bad dir data magic!"; break; } bp->b_ops = &xfs_dir3_data_buf_ops; @@ -2487,8 +2479,7 @@ xlog_recover_validate_buf_type( case XFS_BLFT_DIR_FREE_BUF: if (magic32 != XFS_DIR2_FREE_MAGIC && magic32 != XFS_DIR3_FREE_MAGIC) { - xfs_warn(mp, "Bad dir3 free magic!"); - ASSERT(0); + warnmsg = "Bad dir3 free magic!"; break; } bp->b_ops = &xfs_dir3_free_buf_ops; @@ -2496,8 +2487,7 @@ xlog_recover_validate_buf_type( case XFS_BLFT_DIR_LEAF1_BUF: if (magicda != XFS_DIR2_LEAF1_MAGIC && magicda != XFS_DIR3_LEAF1_MAGIC) { - xfs_warn(mp, "Bad dir leaf1 magic!"); - ASSERT(0); + warnmsg = "Bad dir leaf1 magic!"; break; } bp->b_ops = &xfs_dir3_leaf1_buf_ops; @@ -2505,8 +2495,7 @@ xlog_recover_validate_buf_type( case XFS_BLFT_DIR_LEAFN_BUF: if (magicda != XFS_DIR2_LEAFN_MAGIC && magicda != XFS_DIR3_LEAFN_MAGIC) { - xfs_warn(mp, "Bad dir leafn magic!"); - ASSERT(0); + warnmsg = "Bad dir leafn magic!"; break; } bp->b_ops = &xfs_dir3_leafn_buf_ops; @@ -2514,8 +2503,7 @@ xlog_recover_validate_buf_type( case XFS_BLFT_DA_NODE_BUF: if (magicda != XFS_DA_NODE_MAGIC && magicda != XFS_DA3_NODE_MAGIC) { - xfs_warn(mp, "Bad da node magic!"); - ASSERT(0); + warnmsg = "Bad da node magic!"; break; } bp->b_ops = &xfs_da3_node_buf_ops; @@ -2523,24 +2511,21 @@ xlog_recover_validate_buf_type( case XFS_BLFT_ATTR_LEAF_BUF: if (magicda != XFS_ATTR_LEAF_MAGIC && magicda != XFS_ATTR3_LEAF_MAGIC) { - xfs_warn(mp, "Bad attr leaf magic!"); - ASSERT(0); + warnmsg = "Bad attr leaf magic!"; break; } bp->b_ops = &xfs_attr3_leaf_buf_ops; break; case XFS_BLFT_ATTR_RMT_BUF: if (magic32 != XFS_ATTR3_RMT_MAGIC) { - xfs_warn(mp, "Bad attr remote magic!"); - ASSERT(0); + warnmsg = "Bad attr remote magic!"; break; } bp->b_ops = &xfs_attr3_rmt_buf_ops; break; case XFS_BLFT_SB_BUF: if (magic32 != XFS_SB_MAGIC) { - xfs_warn(mp, "Bad SB block magic!"); - ASSERT(0); + warnmsg = "Bad SB block magic!"; break; } bp->b_ops = &xfs_sb_buf_ops; @@ -2557,6 +2542,15 @@ xlog_recover_validate_buf_type( xfs_blft_from_flags(buf_f)); break; } + + /* + * Don't warn in the case of a NULL current LSN as this means the buffer + * is more recent than the change in the log and will be skipped. + */ + if (warnmsg && current_lsn != NULLCOMMITLSN) { + xfs_warn(mp, warnmsg); + ASSERT(0); + } } /* -- 2.20.1