Re: [PATCH] xfs: print name of verifier if it fails

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On 11/12/15 6:40 AM, Brian Foster wrote:
> On Wed, Nov 11, 2015 at 04:13:17PM -0600, Eric Sandeen wrote:
>> This adds a name to each buf_ops structure, so that if
>> a verifier fails we can print the type of verifier that
>> failed it.  Should be a slight debugging aid, I hope.
>>
>> Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx>
>> ---
> 
> Seems harmless, but is this really necessary when we dump a stack trace?
> I suppose that only happens if the error level is set appropriately.
> Another option might be to use _RET_IP_. It might not be as pretty, but
> we already use it all over the place for tracepoints and such.

The main motivator for the patch is userspace, where we have no dump_stack,
error level, etc.  This patch is just to keep things in sync in libxfs.

Thanks,
-Eric

> Brian
> 
>>
>> diff --git a/fs/xfs/libxfs/xfs_alloc.c b/fs/xfs/libxfs/xfs_alloc.c
>> index 3479294..e1e7fe3 100644
>> --- a/fs/xfs/libxfs/xfs_alloc.c
>> +++ b/fs/xfs/libxfs/xfs_alloc.c
>> @@ -535,6 +535,7 @@ xfs_agfl_write_verify(
>>  }
>>  
>>  const struct xfs_buf_ops xfs_agfl_buf_ops = {
>> +	.name = "xfs_agfl",
>>  	.verify_read = xfs_agfl_read_verify,
>>  	.verify_write = xfs_agfl_write_verify,
>>  };
>> @@ -2339,6 +2340,7 @@ xfs_agf_write_verify(
>>  }
>>  
>>  const struct xfs_buf_ops xfs_agf_buf_ops = {
>> +	.name = "xfs_agf",
>>  	.verify_read = xfs_agf_read_verify,
>>  	.verify_write = xfs_agf_write_verify,
>>  };
>> diff --git a/fs/xfs/libxfs/xfs_alloc_btree.c b/fs/xfs/libxfs/xfs_alloc_btree.c
>> index 90de071..eb8bbfe 100644
>> --- a/fs/xfs/libxfs/xfs_alloc_btree.c
>> +++ b/fs/xfs/libxfs/xfs_alloc_btree.c
>> @@ -379,6 +379,7 @@ xfs_allocbt_write_verify(
>>  }
>>  
>>  const struct xfs_buf_ops xfs_allocbt_buf_ops = {
>> +	.name = "xfs_allocbt",
>>  	.verify_read = xfs_allocbt_read_verify,
>>  	.verify_write = xfs_allocbt_write_verify,
>>  };
>> diff --git a/fs/xfs/libxfs/xfs_attr_leaf.c b/fs/xfs/libxfs/xfs_attr_leaf.c
>> index aa187f7..01a5ecf 100644
>> --- a/fs/xfs/libxfs/xfs_attr_leaf.c
>> +++ b/fs/xfs/libxfs/xfs_attr_leaf.c
>> @@ -328,6 +328,7 @@ xfs_attr3_leaf_read_verify(
>>  }
>>  
>>  const struct xfs_buf_ops xfs_attr3_leaf_buf_ops = {
>> +	.name = "xfs_attr3_leaf",
>>  	.verify_read = xfs_attr3_leaf_read_verify,
>>  	.verify_write = xfs_attr3_leaf_write_verify,
>>  };
>> diff --git a/fs/xfs/libxfs/xfs_attr_remote.c b/fs/xfs/libxfs/xfs_attr_remote.c
>> index 5ab95ff..f3ed9bf 100644
>> --- a/fs/xfs/libxfs/xfs_attr_remote.c
>> +++ b/fs/xfs/libxfs/xfs_attr_remote.c
>> @@ -201,6 +201,7 @@ xfs_attr3_rmt_write_verify(
>>  }
>>  
>>  const struct xfs_buf_ops xfs_attr3_rmt_buf_ops = {
>> +	.name = "xfs_attr3_rmt",
>>  	.verify_read = xfs_attr3_rmt_read_verify,
>>  	.verify_write = xfs_attr3_rmt_write_verify,
>>  };
>> diff --git a/fs/xfs/libxfs/xfs_bmap_btree.c b/fs/xfs/libxfs/xfs_bmap_btree.c
>> index 6b0cf65..1637c37 100644
>> --- a/fs/xfs/libxfs/xfs_bmap_btree.c
>> +++ b/fs/xfs/libxfs/xfs_bmap_btree.c
>> @@ -720,6 +720,7 @@ xfs_bmbt_write_verify(
>>  }
>>  
>>  const struct xfs_buf_ops xfs_bmbt_buf_ops = {
>> +	.name = "xfs_bmbt",
>>  	.verify_read = xfs_bmbt_read_verify,
>>  	.verify_write = xfs_bmbt_write_verify,
>>  };
>> diff --git a/fs/xfs/libxfs/xfs_da_btree.c b/fs/xfs/libxfs/xfs_da_btree.c
>> index e89a0f8..097bf77 100644
>> --- a/fs/xfs/libxfs/xfs_da_btree.c
>> +++ b/fs/xfs/libxfs/xfs_da_btree.c
>> @@ -245,6 +245,7 @@ xfs_da3_node_read_verify(
>>  }
>>  
>>  const struct xfs_buf_ops xfs_da3_node_buf_ops = {
>> +	.name = "xfs_da3_node",
>>  	.verify_read = xfs_da3_node_read_verify,
>>  	.verify_write = xfs_da3_node_write_verify,
>>  };
>> diff --git a/fs/xfs/libxfs/xfs_dir2_block.c b/fs/xfs/libxfs/xfs_dir2_block.c
>> index 9c10e2b..aa17cb7 100644
>> --- a/fs/xfs/libxfs/xfs_dir2_block.c
>> +++ b/fs/xfs/libxfs/xfs_dir2_block.c
>> @@ -123,6 +123,7 @@ xfs_dir3_block_write_verify(
>>  }
>>  
>>  const struct xfs_buf_ops xfs_dir3_block_buf_ops = {
>> +	.name = "xfs_dir3_block",
>>  	.verify_read = xfs_dir3_block_read_verify,
>>  	.verify_write = xfs_dir3_block_write_verify,
>>  };
>> diff --git a/fs/xfs/libxfs/xfs_dir2_data.c b/fs/xfs/libxfs/xfs_dir2_data.c
>> index af71a84..725fc78 100644
>> --- a/fs/xfs/libxfs/xfs_dir2_data.c
>> +++ b/fs/xfs/libxfs/xfs_dir2_data.c
>> @@ -305,11 +305,13 @@ xfs_dir3_data_write_verify(
>>  }
>>  
>>  const struct xfs_buf_ops xfs_dir3_data_buf_ops = {
>> +	.name = "xfs_dir3_data",
>>  	.verify_read = xfs_dir3_data_read_verify,
>>  	.verify_write = xfs_dir3_data_write_verify,
>>  };
>>  
>>  static const struct xfs_buf_ops xfs_dir3_data_reada_buf_ops = {
>> +	.name = "xfs_dir3_data_reada",
>>  	.verify_read = xfs_dir3_data_reada_verify,
>>  	.verify_write = xfs_dir3_data_write_verify,
>>  };
>> diff --git a/fs/xfs/libxfs/xfs_dir2_leaf.c b/fs/xfs/libxfs/xfs_dir2_leaf.c
>> index 3923e1f..b887fb2 100644
>> --- a/fs/xfs/libxfs/xfs_dir2_leaf.c
>> +++ b/fs/xfs/libxfs/xfs_dir2_leaf.c
>> @@ -245,11 +245,13 @@ xfs_dir3_leafn_write_verify(
>>  }
>>  
>>  const struct xfs_buf_ops xfs_dir3_leaf1_buf_ops = {
>> +	.name = "xfs_dir3_leaf1",
>>  	.verify_read = xfs_dir3_leaf1_read_verify,
>>  	.verify_write = xfs_dir3_leaf1_write_verify,
>>  };
>>  
>>  const struct xfs_buf_ops xfs_dir3_leafn_buf_ops = {
>> +	.name = "xfs_dir3_leafn",
>>  	.verify_read = xfs_dir3_leafn_read_verify,
>>  	.verify_write = xfs_dir3_leafn_write_verify,
>>  };
>> diff --git a/fs/xfs/libxfs/xfs_dir2_node.c b/fs/xfs/libxfs/xfs_dir2_node.c
>> index 70b0cb2..63ee03d 100644
>> --- a/fs/xfs/libxfs/xfs_dir2_node.c
>> +++ b/fs/xfs/libxfs/xfs_dir2_node.c
>> @@ -150,6 +150,7 @@ xfs_dir3_free_write_verify(
>>  }
>>  
>>  const struct xfs_buf_ops xfs_dir3_free_buf_ops = {
>> +	.name = "xfs_dir3_free",
>>  	.verify_read = xfs_dir3_free_read_verify,
>>  	.verify_write = xfs_dir3_free_write_verify,
>>  };
>> diff --git a/fs/xfs/libxfs/xfs_dquot_buf.c b/fs/xfs/libxfs/xfs_dquot_buf.c
>> index 5331b7f..11cefb2 100644
>> --- a/fs/xfs/libxfs/xfs_dquot_buf.c
>> +++ b/fs/xfs/libxfs/xfs_dquot_buf.c
>> @@ -282,6 +282,7 @@ xfs_dquot_buf_write_verify(
>>  }
>>  
>>  const struct xfs_buf_ops xfs_dquot_buf_ops = {
>> +	.name = "xfs_dquot",
>>  	.verify_read = xfs_dquot_buf_read_verify,
>>  	.verify_write = xfs_dquot_buf_write_verify,
>>  };
>> diff --git a/fs/xfs/libxfs/xfs_ialloc.c b/fs/xfs/libxfs/xfs_ialloc.c
>> index 70c1db9..66d702e 100644
>> --- a/fs/xfs/libxfs/xfs_ialloc.c
>> +++ b/fs/xfs/libxfs/xfs_ialloc.c
>> @@ -2572,6 +2572,7 @@ xfs_agi_write_verify(
>>  }
>>  
>>  const struct xfs_buf_ops xfs_agi_buf_ops = {
>> +	.name = "xfs_agi",
>>  	.verify_read = xfs_agi_read_verify,
>>  	.verify_write = xfs_agi_write_verify,
>>  };
>> diff --git a/fs/xfs/libxfs/xfs_ialloc_btree.c b/fs/xfs/libxfs/xfs_ialloc_btree.c
>> index f39b285..6dd44f9 100644
>> --- a/fs/xfs/libxfs/xfs_ialloc_btree.c
>> +++ b/fs/xfs/libxfs/xfs_ialloc_btree.c
>> @@ -304,6 +304,7 @@ xfs_inobt_write_verify(
>>  }
>>  
>>  const struct xfs_buf_ops xfs_inobt_buf_ops = {
>> +	.name = "xfs_inobt",
>>  	.verify_read = xfs_inobt_read_verify,
>>  	.verify_write = xfs_inobt_write_verify,
>>  };
>> diff --git a/fs/xfs/libxfs/xfs_inode_buf.c b/fs/xfs/libxfs/xfs_inode_buf.c
>> index 268c00f..1b8d98a 100644
>> --- a/fs/xfs/libxfs/xfs_inode_buf.c
>> +++ b/fs/xfs/libxfs/xfs_inode_buf.c
>> @@ -132,11 +132,13 @@ xfs_inode_buf_write_verify(
>>  }
>>  
>>  const struct xfs_buf_ops xfs_inode_buf_ops = {
>> +	.name = "xfs_inode",
>>  	.verify_read = xfs_inode_buf_read_verify,
>>  	.verify_write = xfs_inode_buf_write_verify,
>>  };
>>  
>>  const struct xfs_buf_ops xfs_inode_buf_ra_ops = {
>> +	.name = "xxfs_inode_ra",
>>  	.verify_read = xfs_inode_buf_readahead_verify,
>>  	.verify_write = xfs_inode_buf_write_verify,
>>  };
>> diff --git a/fs/xfs/libxfs/xfs_sb.c b/fs/xfs/libxfs/xfs_sb.c
>> index a0b071d..8a53eaa 100644
>> --- a/fs/xfs/libxfs/xfs_sb.c
>> +++ b/fs/xfs/libxfs/xfs_sb.c
>> @@ -679,11 +679,13 @@ xfs_sb_write_verify(
>>  }
>>  
>>  const struct xfs_buf_ops xfs_sb_buf_ops = {
>> +	.name = "xfs_sb",
>>  	.verify_read = xfs_sb_read_verify,
>>  	.verify_write = xfs_sb_write_verify,
>>  };
>>  
>>  const struct xfs_buf_ops xfs_sb_quiet_buf_ops = {
>> +	.name = "xfs_sb_quiet",
>>  	.verify_read = xfs_sb_quiet_read_verify,
>>  	.verify_write = xfs_sb_write_verify,
>>  };
>> diff --git a/fs/xfs/libxfs/xfs_symlink_remote.c b/fs/xfs/libxfs/xfs_symlink_remote.c
>> index cb6fd20..2e2c671 100644
>> --- a/fs/xfs/libxfs/xfs_symlink_remote.c
>> +++ b/fs/xfs/libxfs/xfs_symlink_remote.c
>> @@ -168,6 +168,7 @@ xfs_symlink_write_verify(
>>  }
>>  
>>  const struct xfs_buf_ops xfs_symlink_buf_ops = {
>> +	.name = "xfs_symlink",
>>  	.verify_read = xfs_symlink_read_verify,
>>  	.verify_write = xfs_symlink_write_verify,
>>  };
>> diff --git a/fs/xfs/xfs_buf.h b/fs/xfs/xfs_buf.h
>> index c79b717..c75721a 100644
>> --- a/fs/xfs/xfs_buf.h
>> +++ b/fs/xfs/xfs_buf.h
>> @@ -132,6 +132,7 @@ struct xfs_buf_map {
>>  	struct xfs_buf_map (map) = { .bm_bn = (blkno), .bm_len = (numblk) };
>>  
>>  struct xfs_buf_ops {
>> +	char *name;
>>  	void (*verify_read)(struct xfs_buf *);
>>  	void (*verify_write)(struct xfs_buf *);
>>  };
>> diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c
>> index 74d0e59..88693a9 100644
>> --- a/fs/xfs/xfs_error.c
>> +++ b/fs/xfs/xfs_error.c
>> @@ -164,9 +164,9 @@ xfs_verifier_error(
>>  {
>>  	struct xfs_mount *mp = bp->b_target->bt_mount;
>>  
>> -	xfs_alert(mp, "Metadata %s detected at %pF, block 0x%llx",
>> +	xfs_alert(mp, "Metadata %s detected at %pF, %s block 0x%llx",
>>  		  bp->b_error == -EFSBADCRC ? "CRC error" : "corruption",
>> -		  __return_address, bp->b_bn);
>> +		  __return_address, bp->b_ops->name, bp->b_bn);
>>  
>>  	xfs_alert(mp, "Unmount and run xfs_repair");
>>  
>>
>> _______________________________________________
>> xfs mailing list
>> xfs@xxxxxxxxxxx
>> http://oss.sgi.com/mailman/listinfo/xfs
> 
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> 

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