Thread (16 messages) 16 messages, 2 authors, 2021-02-18

Re: [PATCH 3/3] xfs_repair: add post-phase error injection points

From: "Darrick J. Wong" <djwong@kernel.org>
Date: 2021-02-18 18:48:43

On Thu, Feb 18, 2021 at 08:02:28AM -0500, Brian Foster wrote:
On Wed, Feb 17, 2021 at 08:47:29PM -0800, Darrick J. Wong wrote:
quoted
On Tue, Feb 16, 2021 at 06:58:39AM -0500, Brian Foster wrote:
quoted
On Fri, Feb 12, 2021 at 09:47:01PM -0800, Darrick J. Wong wrote:
quoted
From: Darrick J. Wong <djwong@kernel.org>

Create an error injection point so that we can simulate repair failing
after a certain phase.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
---
 repair/globals.c    |    3 +++
 repair/globals.h    |    3 +++
 repair/progress.c   |    3 +++
 repair/xfs_repair.c |    4 ++++
 4 files changed, 13 insertions(+)
...
quoted
diff --git a/repair/progress.c b/repair/progress.c
index e5a9c1ef..5bbe58ec 100644
--- a/repair/progress.c
+++ b/repair/progress.c
@@ -410,6 +410,9 @@ timestamp(int end, int phase, char *buf)
 		current_phase = phase;
 	}
 
+	if (fail_after_phase && phase == fail_after_phase)
+		kill(getpid(), SIGKILL);
+
It seems a little hacky to bury this in timestamp(). Perhaps we should
at least check for end == PHASE_END (even though PHASE_START is
currently only used in one place). Otherwise seems reasonable..
Yeah, I don't know of a better place to put it -- adding another call
after every timestamp() just seems like clutter.
I was thinking that factoring timestamp() into a new post-phase helper
seemed a relatively simple cleanup.
Ok, will do.

--D
Brian
quoted
Will fix it to check for PHASE_END, though.

Thanks for reading. :)

--D
quoted
Brian
quoted
 	if (buf) {
 		tmp = localtime((const time_t *)&now);
 		sprintf(buf, _("%02d:%02d:%02d"), tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
diff --git a/repair/xfs_repair.c b/repair/xfs_repair.c
index 12e319ae..6b60b8f4 100644
--- a/repair/xfs_repair.c
+++ b/repair/xfs_repair.c
@@ -362,6 +362,10 @@ process_args(int argc, char **argv)
 
 	if (report_corrected && no_modify)
 		usage();
+
+	p = getenv("XFS_REPAIR_FAIL_AFTER_PHASE");
+	if (p)
+		fail_after_phase = (int)strtol(p, NULL, 0);
 }
 
 void __attribute__((noreturn))
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