Re: [RFC PATCH 2/2] xfs: add leaf to node error tag

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On Thu, Nov 11, 2021 at 12:17:16AM +0000, Catherine Hoang wrote:
> Add an error tag on xfs_attr3_leaf_to_node to test log attribute
> recovery and replay.
> 
> Signed-off-by: Catherine Hoang <catherine.hoang@xxxxxxxxxx>
> ---
>  fs/xfs/libxfs/xfs_attr_leaf.c | 6 ++++++
>  fs/xfs/libxfs/xfs_errortag.h  | 4 +++-
>  fs/xfs/xfs_error.c            | 3 +++
>  3 files changed, 12 insertions(+), 1 deletion(-)
> 
> diff --git a/fs/xfs/libxfs/xfs_attr_leaf.c b/fs/xfs/libxfs/xfs_attr_leaf.c
> index 74b76b09509f..fdeb09de74ca 100644
> --- a/fs/xfs/libxfs/xfs_attr_leaf.c
> +++ b/fs/xfs/libxfs/xfs_attr_leaf.c
> @@ -28,6 +28,7 @@
>  #include "xfs_dir2.h"
>  #include "xfs_log.h"
>  #include "xfs_ag.h"
> +#include "xfs_errortag.h"
>  
>  
>  /*
> @@ -1189,6 +1190,11 @@ xfs_attr3_leaf_to_node(
>  
>  	trace_xfs_attr_leaf_to_node(args);
>  
> +	if (XFS_TEST_ERROR(false, mp, XFS_ERRTAG_LEAF_TO_NODE)) {

Hmmm... any plans to do a similar thing for directories too?

(FWIW the rest of the errortag injecting stuff looks ok...)

--D

> +		error = -EIO;
> +		goto out;
> +	}
> +
>  	error = xfs_da_grow_inode(args, &blkno);
>  	if (error)
>  		goto out;
> diff --git a/fs/xfs/libxfs/xfs_errortag.h b/fs/xfs/libxfs/xfs_errortag.h
> index 31aeeb94dd5b..cc1650b58723 100644
> --- a/fs/xfs/libxfs/xfs_errortag.h
> +++ b/fs/xfs/libxfs/xfs_errortag.h
> @@ -61,7 +61,8 @@
>  #define XFS_ERRTAG_AG_RESV_FAIL				38
>  #define XFS_ERRTAG_LARP					39
>  #define XFS_ERRTAG_LEAF_SPLIT				40
> -#define XFS_ERRTAG_MAX					41
> +#define XFS_ERRTAG_LEAF_TO_NODE				41
> +#define XFS_ERRTAG_MAX					42
>  
>  /*
>   * Random factors for above tags, 1 means always, 2 means 1/2 time, etc.
> @@ -107,5 +108,6 @@
>  #define XFS_RANDOM_AG_RESV_FAIL				1
>  #define XFS_RANDOM_LARP					1
>  #define XFS_RANDOM_LEAF_SPLIT				1
> +#define XFS_RANDOM_LEAF_TO_NODE				1
>  
>  #endif /* __XFS_ERRORTAG_H_ */
> diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c
> index 732cb66236c1..7f2a71218a82 100644
> --- a/fs/xfs/xfs_error.c
> +++ b/fs/xfs/xfs_error.c
> @@ -59,6 +59,7 @@ static unsigned int xfs_errortag_random_default[] = {
>  	XFS_RANDOM_AG_RESV_FAIL,
>  	XFS_RANDOM_LARP,
>  	XFS_RANDOM_LEAF_SPLIT,
> +	XFS_RANDOM_LEAF_TO_NODE,
>  };
>  
>  struct xfs_errortag_attr {
> @@ -174,6 +175,7 @@ XFS_ERRORTAG_ATTR_RW(bmap_alloc_minlen_extent,	XFS_ERRTAG_BMAP_ALLOC_MINLEN_EXTE
>  XFS_ERRORTAG_ATTR_RW(ag_resv_fail, XFS_ERRTAG_AG_RESV_FAIL);
>  XFS_ERRORTAG_ATTR_RW(larp,		XFS_ERRTAG_LARP);
>  XFS_ERRORTAG_ATTR_RW(leaf_split,	XFS_ERRTAG_LEAF_SPLIT);
> +XFS_ERRORTAG_ATTR_RW(leaf_to_node,	XFS_ERRTAG_LEAF_TO_NODE);
>  
>  static struct attribute *xfs_errortag_attrs[] = {
>  	XFS_ERRORTAG_ATTR_LIST(noerror),
> @@ -217,6 +219,7 @@ static struct attribute *xfs_errortag_attrs[] = {
>  	XFS_ERRORTAG_ATTR_LIST(ag_resv_fail),
>  	XFS_ERRORTAG_ATTR_LIST(larp),
>  	XFS_ERRORTAG_ATTR_LIST(leaf_split),
> +	XFS_ERRORTAG_ATTR_LIST(leaf_to_node),
>  	NULL,
>  };
>  
> -- 
> 2.25.1
> 



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