On Thu, Feb 18, 2021 at 07:18:15PM -0800, Darrick J. Wong wrote:
> From: Darrick J. Wong <djwong@xxxxxxxxxx>
>
> Create an error injection point so that we can simulate repair failing
> after a certain phase.
>
> Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
> ---
Reviewed-by: Brian Foster <bfoster@xxxxxxxxxx>
> repair/globals.c | 3 +++
> repair/globals.h | 3 +++
> repair/xfs_repair.c | 8 ++++++++
> 3 files changed, 14 insertions(+)
>
>
> diff --git a/repair/globals.c b/repair/globals.c
> index 110d98b6..537d068b 100644
> --- a/repair/globals.c
> +++ b/repair/globals.c
> @@ -117,3 +117,6 @@ uint64_t *prog_rpt_done;
>
> int ag_stride;
> int thread_count;
> +
> +/* If nonzero, simulate failure after this phase. */
> +int fail_after_phase;
> diff --git a/repair/globals.h b/repair/globals.h
> index 1d397b35..a9287320 100644
> --- a/repair/globals.h
> +++ b/repair/globals.h
> @@ -162,4 +162,7 @@ extern uint64_t *prog_rpt_done;
> extern int ag_stride;
> extern int thread_count;
>
> +/* If nonzero, simulate failure after this phase. */
> +extern int fail_after_phase;
> +
> #endif /* _XFS_REPAIR_GLOBAL_H */
> diff --git a/repair/xfs_repair.c b/repair/xfs_repair.c
> index 891b3b23..33062170 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))
> @@ -851,6 +855,10 @@ static inline void
> phase_end(int phase)
> {
> timestamp(PHASE_END, phase, NULL);
> +
> + /* Fail if someone injected an post-phase error. */
> + if (fail_after_phase && phase == fail_after_phase)
> + platform_crash();
> }
>
> int
>
