diff options
| -rw-r--r-- | Documentation/admin-guide/device-mapper/verity.rst | 6 | ||||
| -rw-r--r-- | drivers/md/dm-verity-fec.c | 4 | ||||
| -rw-r--r-- | drivers/md/dm-verity-fec.h | 1 | ||||
| -rw-r--r-- | drivers/md/dm-verity-target.c | 4 |
4 files changed, 12 insertions, 3 deletions
diff --git a/Documentation/admin-guide/device-mapper/verity.rst b/Documentation/admin-guide/device-mapper/verity.rst index 8c3f1f967a3c..3ecab1cff9c6 100644 --- a/Documentation/admin-guide/device-mapper/verity.rst +++ b/Documentation/admin-guide/device-mapper/verity.rst @@ -236,8 +236,10 @@ is available at the cryptsetup project's wiki page Status ====== -V (for Valid) is returned if every check performed so far was valid. -If any check failed, C (for Corruption) is returned. +1. V (for Valid) is returned if every check performed so far was valid. + If any check failed, C (for Corruption) is returned. +2. Number of corrected blocks by Forward Error Correction. + '-' if Forward Error Correction is not enabled. Example ======= diff --git a/drivers/md/dm-verity-fec.c b/drivers/md/dm-verity-fec.c index 301a9c01bf86..d792eaed0792 100644 --- a/drivers/md/dm-verity-fec.c +++ b/drivers/md/dm-verity-fec.c @@ -177,9 +177,11 @@ error: if (r < 0 && neras) DMERR_LIMIT("%s: FEC %llu: failed to correct: %d", v->data_dev->name, (unsigned long long)rsb, r); - else if (r > 0) + else if (r > 0) { DMWARN_LIMIT("%s: FEC %llu: corrected %d errors", v->data_dev->name, (unsigned long long)rsb, r); + atomic64_inc(&v->fec->corrected); + } return r; } diff --git a/drivers/md/dm-verity-fec.h b/drivers/md/dm-verity-fec.h index a6689cdc489d..dd55037377b6 100644 --- a/drivers/md/dm-verity-fec.h +++ b/drivers/md/dm-verity-fec.h @@ -48,6 +48,7 @@ struct dm_verity_fec { mempool_t extra_pool; /* mempool for extra buffers */ mempool_t output_pool; /* mempool for output */ struct kmem_cache *cache; /* cache for buffers */ + atomic64_t corrected; /* corrected errors */ }; /* per-bio data */ diff --git a/drivers/md/dm-verity-target.c b/drivers/md/dm-verity-target.c index bf0aee73b074..52a0e052a5e8 100644 --- a/drivers/md/dm-verity-target.c +++ b/drivers/md/dm-verity-target.c @@ -848,6 +848,10 @@ static void verity_status(struct dm_target *ti, status_type_t type, switch (type) { case STATUSTYPE_INFO: DMEMIT("%c", v->hash_failed ? 'C' : 'V'); + if (verity_fec_is_enabled(v)) + DMEMIT(" %lld", atomic64_read(&v->fec->corrected)); + else + DMEMIT(" -"); break; case STATUSTYPE_TABLE: DMEMIT("%u %s %s %u %u %llu %llu %s ", |