diff options
Diffstat (limited to 'debian/patches/0006-imsm-update-metadata-correctly-while-raid10-double-d.patch')
| -rw-r--r-- | debian/patches/0006-imsm-update-metadata-correctly-while-raid10-double-d.patch | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/debian/patches/0006-imsm-update-metadata-correctly-while-raid10-double-d.patch b/debian/patches/0006-imsm-update-metadata-correctly-while-raid10-double-d.patch new file mode 100644 index 00000000..903d082d --- /dev/null +++ b/debian/patches/0006-imsm-update-metadata-correctly-while-raid10-double-d.patch @@ -0,0 +1,83 @@ +From d7a1fda2769ba272d89de6caeab35d52b73a9c3c Mon Sep 17 00:00:00 2001 +From: Mariusz Tkaczyk <mariusz.tkaczyk@intel.com> +Date: Wed, 17 Oct 2018 12:11:41 +0200 +Subject: [PATCH 06/11] imsm: update metadata correctly while raid10 double + degradation + +Mdmon calls end_migration() when map state changes from normal to +degraded. It is not valid because in raid 10 double degradation case +mdmon breaks checkpointing but array is still rebuilding. +In this case mdmon has to mark map as degraded and continues marking +recovery checkpoint in metadata. Migration can be finished only if newly +failed device is a rebuilding device. + +Add catching double degraded to degraded transition. Migration is +finished but map state doesn't change, array is still degraded. + +Update failed_disk_num correctly. If double degradation +happens rebuild will start on the lowest slot, but this variable points +to the first failed slot. If second fail happens while rebuild this +variable shouldn't be updated until rebuild is not finished. + +Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@intel.com> +Signed-off-by: Jes Sorensen <jsorensen@fb.com> +--- + super-intel.c | 25 +++++++++++++++++++------ + 1 file changed, 19 insertions(+), 6 deletions(-) + +diff --git a/super-intel.c b/super-intel.c +index 6438987b..d2035ccd 100644 +--- a/super-intel.c ++++ b/super-intel.c +@@ -8136,7 +8136,8 @@ static int mark_failure(struct intel_super *super, + set_imsm_ord_tbl_ent(map2, slot2, + idx | IMSM_ORD_REBUILD); + } +- if (map->failed_disk_num == 0xff) ++ if (map->failed_disk_num == 0xff || ++ (!is_rebuilding(dev) && map->failed_disk_num > slot)) + map->failed_disk_num = slot; + + clear_disk_badblocks(super->bbm_log, ord_to_idx(ord)); +@@ -8558,13 +8559,25 @@ static void imsm_set_disk(struct active_array *a, int n, int state) + break; + } + if (is_rebuilding(dev)) { +- dprintf_cont("while rebuilding."); ++ dprintf_cont("while rebuilding "); + if (map->map_state != map_state) { +- dprintf_cont(" Map state change"); +- end_migration(dev, super, map_state); ++ dprintf_cont("map state change "); ++ if (n == map->failed_disk_num) { ++ dprintf_cont("end migration"); ++ end_migration(dev, super, map_state); ++ } else { ++ dprintf_cont("raid10 double degradation, map state change"); ++ map->map_state = map_state; ++ } + super->updates_pending++; +- } else if (!rebuild_done) { ++ } else if (!rebuild_done) + break; ++ else if (n == map->failed_disk_num) { ++ /* r10 double degraded to degraded transition */ ++ dprintf_cont("raid10 double degradation end migration"); ++ end_migration(dev, super, map_state); ++ a->last_checkpoint = 0; ++ super->updates_pending++; + } + + /* check if recovery is really finished */ +@@ -8575,7 +8588,7 @@ static void imsm_set_disk(struct active_array *a, int n, int state) + } + if (recovery_not_finished) { + dprintf_cont("\n"); +- dprintf("Rebuild has not finished yet, state not changed"); ++ dprintf_cont("Rebuild has not finished yet, map state changes only if raid10 double degradation happens"); + if (a->last_checkpoint < mdi->recovery_start) { + a->last_checkpoint = + mdi->recovery_start; +-- +2.19.1 + |