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| author |   Darrick J. Wong <darrick.wong@oracle.com> | 2016-10-03 09:11:51 -0700 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2016-10-05 16:26:31 -0700 |
| commit | a35eb41519ab8db90e87d375ee9362d6e080ca4c (patch) | |
| tree | 6db45615c97decf9d8c75bbc8c590e0ca5d936b2 /fs/xfs | |
| parent | xfs: don't mix reflink and DAX mode for now (diff) | |
| download | linux-dev-a35eb41519ab8db90e87d375ee9362d6e080ca4c.tar.xz linux-dev-a35eb41519ab8db90e87d375ee9362d6e080ca4c.zip | |
xfs: simulate per-AG reservations being critically low
Create an error injection point that enables us to simulate being
critically low on per-AG block reservations. This should enable us to
simulate this specific ENOSPC condition so that we can test falling back
to a regular file copy.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs/xfs')
| -rw-r--r-- | fs/xfs/libxfs/xfs_ag_resv.c | 4 | ||||
| -rw-r--r-- | fs/xfs/xfs_error.h | 4 |
2 files changed, 6 insertions, 2 deletions
diff --git a/fs/xfs/libxfs/xfs_ag_resv.c b/fs/xfs/libxfs/xfs_ag_resv.c index adf770f0d011..e5ebc3770460 100644 --- a/fs/xfs/libxfs/xfs_ag_resv.c +++ b/fs/xfs/libxfs/xfs_ag_resv.c @@ -109,7 +109,9 @@ xfs_ag_resv_critical( trace_xfs_ag_resv_critical(pag, type, avail); /* Critically low if less than 10% or max btree height remains. */ - return avail < orig / 10 || avail < XFS_BTREE_MAXLEVELS; + return XFS_TEST_ERROR(avail < orig / 10 || avail < XFS_BTREE_MAXLEVELS, + pag->pag_mount, XFS_ERRTAG_AG_RESV_CRITICAL, + XFS_RANDOM_AG_RESV_CRITICAL); } /* diff --git a/fs/xfs/xfs_error.h b/fs/xfs/xfs_error.h index 8d8e1b07d295..05f8666733a0 100644 --- a/fs/xfs/xfs_error.h +++ b/fs/xfs/xfs_error.h @@ -95,7 +95,8 @@ extern void xfs_verifier_error(struct xfs_buf *bp); #define XFS_ERRTAG_REFCOUNT_CONTINUE_UPDATE 24 #define XFS_ERRTAG_REFCOUNT_FINISH_ONE 25 #define XFS_ERRTAG_BMAP_FINISH_ONE 26 -#define XFS_ERRTAG_MAX 27 +#define XFS_ERRTAG_AG_RESV_CRITICAL 27 +#define XFS_ERRTAG_MAX 28 /* * Random factors for above tags, 1 means always, 2 means 1/2 time, etc. @@ -127,6 +128,7 @@ extern void xfs_verifier_error(struct xfs_buf *bp); #define XFS_RANDOM_REFCOUNT_CONTINUE_UPDATE 1 #define XFS_RANDOM_REFCOUNT_FINISH_ONE 1 #define XFS_RANDOM_BMAP_FINISH_ONE 1 +#define XFS_RANDOM_AG_RESV_CRITICAL 4 #ifdef DEBUG extern int xfs_error_test_active; |