From c7bf13987fdbf317de6cfc801c914f2af46b7669 Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Tue, 25 Oct 2016 12:46:51 +1100 Subject: [PATCH] xfs: simulate per-AG reservations being critically low Source kernel commit: a35eb41519ab8db90e87d375ee9362d6e080ca4c 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 Reviewed-by: Christoph Hellwig --- libxfs/xfs_ag_resv.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/libxfs/xfs_ag_resv.c b/libxfs/xfs_ag_resv.c index 7e03328f9..57f01a74b 100644 --- a/libxfs/xfs_ag_resv.c +++ b/libxfs/xfs_ag_resv.c @@ -108,7 +108,9 @@ 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); } /* -- 2.47.2