dm raid: enhance status interface and fixup takeover/raid0
The target's status interface has to provide the new 'data_offset' value to allow userspace to retrieve the kernels offset to the data on each raid device of a raid set. This is the base for out-of-place reshaping required to not write over any data during reshaping (e.g. change raid6_zr -> raid6_nc): - add rs_set_cur() to be able to start up existing array in case of no takeover; use in ctr on takeover check - enhance raid_status() - add supporting functions to get resync/reshape progress and raid device status chars - fixup rebuild table line output race, which does miss to emit 'rebuild N' on fully synced/rebuild devices, because it is relying on the transient 'In_sync' raid device flag - add new status line output for 'data_offset', which'll later be used for out-of-place reshaping - fixup takeover not working for all levels - fixup raid0 message interface oops caused by missing checks for the md threads, which don't exist in case of raid0 - remove ALL_FREEZE_FLAGS not needed for takeover - adjust comments Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
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Коммит
3a1c1ef2fd
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@ -98,13 +98,6 @@ struct raid_dev {
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#define ALL_CTR_FLAGS (CTR_FLAG_OPTIONS_NO_ARGS | \
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CTR_FLAG_OPTIONS_ONE_ARG)
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/*
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* All flags which cause a recovery unfreeze once they got stored in the raid metadata
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*/
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#define ALL_FREEZE_FLAGS (ALL_CTR_FLAGS & ~(CTR_FLAG_REGION_SIZE | CTR_FLAGS_ANY_SYNC | \
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CTR_FLAG_RAID10_FORMAT | CTR_FLAG_RAID10_COPIES | \
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CTR_FLAG_RAID10_USE_NEAR_SETS))
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/* Invalid options definitions per raid level... */
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/* "raid0" does not accept any options */
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@ -617,6 +610,19 @@ static struct raid_type *get_raid_type_by_ll(const int level, const int layout)
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return NULL;
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}
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/*
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* Set the mddev properties in @rs to the current
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* ones retrieved from the freshest superblock
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*/
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static void rs_set_cur(struct raid_set *rs)
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{
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struct mddev *mddev = &rs->md;
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mddev->new_level = mddev->level;
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mddev->new_layout = mddev->layout;
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mddev->new_chunk_sectors = mddev->chunk_sectors;
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}
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/*
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* Set the mddev properties in @rs to the new
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* ones requested by the ctr
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@ -628,6 +634,7 @@ static void rs_set_new(struct raid_set *rs)
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mddev->level = mddev->new_level;
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mddev->layout = mddev->new_layout;
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mddev->chunk_sectors = mddev->new_chunk_sectors;
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mddev->raid_disks = rs->raid_disks;
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mddev->delta_disks = 0;
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}
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@ -773,7 +780,7 @@ static int parse_dev_params(struct raid_set *rs, struct dm_arg_set *as)
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rs->dev[i].rdev.meta_bdev = rs->dev[i].meta_dev->bdev;
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}
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rs->dev[i].rdev.bdev = rs->dev[i].data_dev->bdev;
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list_add(&rs->dev[i].rdev.same_set, &rs->md.disks);
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list_add_tail(&rs->dev[i].rdev.same_set, &rs->md.disks);
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if (!test_bit(In_sync, &rs->dev[i].rdev.flags))
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rebuild++;
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}
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@ -1245,6 +1252,12 @@ static int parse_raid_params(struct raid_set *rs, struct dm_arg_set *as,
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return rs_check_for_invalid_flags(rs);
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}
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/* Return # of data stripes as kept in mddev as of @rs (i.e. as of superblock) */
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static unsigned int mddev_data_stripes(struct raid_set *rs)
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{
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return rs->md.raid_disks - rs->raid_type->parity_devs;
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}
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static void do_table_event(struct work_struct *ws)
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{
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struct raid_set *rs = container_of(ws, struct raid_set, md.event_work);
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@ -1735,7 +1748,7 @@ static int super_init_validation(struct raid_set *rs, struct md_rdev *rdev)
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} else {
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/*
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* Reshaping is not allowed, because we don't have the appropriate metadata
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* No takeover/reshaping, because we don't have the extended v1.8.0 metadata
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*/
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if (le32_to_cpu(sb->level) != mddev->level) {
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DMERR("Reshaping/takeover raid sets not yet supported. (raid level/stripes/size change)");
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@ -1889,7 +1902,7 @@ static int super_validate(struct raid_set *rs, struct md_rdev *rdev)
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struct mddev *mddev = &rs->md;
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struct dm_raid_superblock *sb;
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if (!rdev->sb_page)
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if (rs_is_raid0(rs) || !rdev->sb_page)
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return 0;
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sb = page_address(rdev->sb_page);
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@ -2084,9 +2097,6 @@ static int rs_setup_takeover(struct raid_set *rs)
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rdev->new_data_offset = new_data_offset;
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}
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rs_set_new(rs);
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set_bit(MD_CHANGE_DEVS, &mddev->flags);
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return 0;
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}
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@ -2232,8 +2242,11 @@ static int raid_ctr(struct dm_target *ti, unsigned argc, char **argv)
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if (r)
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return r;
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/* Tell preresume to update superblocks with new layout */
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_set_flag(RT_FLAG_UPDATE_SBS, &rs->runtime_flags);
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}
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rs_set_new(rs);
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} else
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rs_set_cur(rs);
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/* Start raid set read-only and assumed clean to change in raid_resume() */
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rs->md.ro = 1;
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@ -2288,6 +2301,7 @@ static int raid_map(struct dm_target *ti, struct bio *bio)
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return DM_MAPIO_SUBMITTED;
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}
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/* Return string describing the current sync action of @mddev */
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static const char *decipher_sync_action(struct mddev *mddev)
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{
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if (test_bit(MD_RECOVERY_FROZEN, &mddev->recovery))
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@ -2313,181 +2327,251 @@ static const char *decipher_sync_action(struct mddev *mddev)
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return "idle";
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}
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/*
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* Return status string @rdev
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*
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* Status characters:
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*
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* 'D' = Dead/Failed device
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* 'a' = Alive but not in-sync
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* 'A' = Alive and in-sync
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*/
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static const char *_raid_dev_status(struct md_rdev *rdev, bool array_in_sync)
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{
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if (test_bit(Faulty, &rdev->flags))
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return "D";
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else if (!array_in_sync || !test_bit(In_sync, &rdev->flags))
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return "a";
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else
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return "A";
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}
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/* Helper to return resync/reshape progress for @rs and @array_in_sync */
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static sector_t rs_get_progress(struct raid_set *rs,
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sector_t resync_max_sectors, bool *array_in_sync)
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{
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sector_t r, recovery_cp, curr_resync_completed;
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struct mddev *mddev = &rs->md;
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curr_resync_completed = mddev->curr_resync_completed ?: mddev->recovery_cp;
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recovery_cp = mddev->recovery_cp;
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*array_in_sync = false;
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if (rs_is_raid0(rs)) {
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r = resync_max_sectors;
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*array_in_sync = true;
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} else {
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r = mddev->reshape_position;
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/* Reshape is relative to the array size */
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if (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery) ||
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r != MaxSector) {
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if (r == MaxSector) {
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*array_in_sync = true;
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r = resync_max_sectors;
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} else {
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/* Got to reverse on backward reshape */
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if (mddev->reshape_backwards)
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r = mddev->array_sectors - r;
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/* Devide by # of data stripes */
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sector_div(r, mddev_data_stripes(rs));
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}
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/* Sync is relative to the component device size */
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} else if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery))
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r = curr_resync_completed;
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else
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r = recovery_cp;
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if (r == MaxSector) {
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/*
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* Sync complete.
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*/
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*array_in_sync = true;
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r = resync_max_sectors;
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} else if (test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery)) {
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/*
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* If "check" or "repair" is occurring, the raid set has
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* undergone an initial sync and the health characters
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* should not be 'a' anymore.
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*/
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*array_in_sync = true;
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} else {
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struct md_rdev *rdev;
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/*
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* The raid set may be doing an initial sync, or it may
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* be rebuilding individual components. If all the
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* devices are In_sync, then it is the raid set that is
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* being initialized.
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*/
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rdev_for_each(rdev, mddev)
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if (!test_bit(In_sync, &rdev->flags))
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*array_in_sync = true;
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#if 0
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r = 0; /* HM FIXME: TESTME: https://bugzilla.redhat.com/show_bug.cgi?id=1210637 ? */
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#endif
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}
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}
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return r;
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}
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/* Helper to return @dev name or "-" if !@dev */
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static const char *_get_dev_name(struct dm_dev *dev)
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{
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return dev ? dev->name : "-";
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}
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static void raid_status(struct dm_target *ti, status_type_t type,
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unsigned status_flags, char *result, unsigned maxlen)
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unsigned int status_flags, char *result, unsigned int maxlen)
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{
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struct raid_set *rs = ti->private;
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unsigned raid_param_cnt = 1; /* at least 1 for chunksize */
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unsigned sz = 0;
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int i, array_in_sync = 0;
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sector_t sync;
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struct mddev *mddev = &rs->md;
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struct r5conf *conf = mddev->private;
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int max_nr_stripes = conf ? conf->max_nr_stripes : 0;
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bool array_in_sync;
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unsigned int raid_param_cnt = 1; /* at least 1 for chunksize */
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unsigned int sz = 0;
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unsigned int write_mostly_params = 0;
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sector_t progress, resync_max_sectors, resync_mismatches;
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const char *sync_action;
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struct raid_type *rt;
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struct md_rdev *rdev;
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switch (type) {
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case STATUSTYPE_INFO:
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DMEMIT("%s %d ", rs->raid_type->name, rs->md.raid_disks);
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/* *Should* always succeed */
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rt = get_raid_type_by_ll(mddev->new_level, mddev->new_layout);
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if (!rt)
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return;
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if (!rt_is_raid0(rs->raid_type)) {
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if (test_bit(MD_RECOVERY_RUNNING, &rs->md.recovery))
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sync = rs->md.curr_resync_completed;
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else
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sync = rs->md.recovery_cp;
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DMEMIT("%s %d ", rt ? rt->name : "unknown", mddev->raid_disks);
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if (sync >= rs->md.resync_max_sectors) {
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/*
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* Sync complete.
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*/
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array_in_sync = 1;
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sync = rs->md.resync_max_sectors;
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} else if (test_bit(MD_RECOVERY_REQUESTED, &rs->md.recovery)) {
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/*
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* If "check" or "repair" is occurring, the array has
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* undergone and initial sync and the health characters
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* should not be 'a' anymore.
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*/
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array_in_sync = 1;
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} else {
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/*
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* The array may be doing an initial sync, or it may
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* be rebuilding individual components. If all the
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* devices are In_sync, then it is the array that is
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* being initialized.
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*/
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for (i = 0; i < rs->md.raid_disks; i++)
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if (!test_bit(In_sync, &rs->dev[i].rdev.flags))
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array_in_sync = 1;
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}
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} else {
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/* RAID0 */
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array_in_sync = 1;
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sync = rs->md.resync_max_sectors;
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}
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/* Access most recent mddev properties for status output */
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smp_rmb();
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/* Get sensible max sectors even if raid set not yet started */
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resync_max_sectors = _test_flag(RT_FLAG_RS_PRERESUMED, rs->runtime_flags) ?
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mddev->resync_max_sectors : mddev->dev_sectors;
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progress = rs_get_progress(rs, resync_max_sectors, &array_in_sync);
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resync_mismatches = (mddev->last_sync_action && !strcasecmp(mddev->last_sync_action, "check")) ?
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(unsigned int) atomic64_read(&mddev->resync_mismatches) : 0;
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sync_action = decipher_sync_action(&rs->md);
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/* HM FIXME: do we want another state char for raid0? It shows 'D' or 'A' now */
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rdev_for_each(rdev, mddev)
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DMEMIT(_raid_dev_status(rdev, array_in_sync));
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/*
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* Status characters:
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* 'D' = Dead/Failed device
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* 'a' = Alive but not in-sync
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* 'A' = Alive and in-sync
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*/
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for (i = 0; i < rs->md.raid_disks; i++) {
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if (test_bit(Faulty, &rs->dev[i].rdev.flags))
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DMEMIT("D");
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else if (!array_in_sync ||
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!test_bit(In_sync, &rs->dev[i].rdev.flags))
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DMEMIT("a");
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else
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DMEMIT("A");
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}
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/*
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* In-sync ratio:
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* In-sync/Reshape ratio:
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* The in-sync ratio shows the progress of:
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* - Initializing the array
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* - Rebuilding a subset of devices of the array
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* - Initializing the raid set
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* - Rebuilding a subset of devices of the raid set
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* The user can distinguish between the two by referring
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* to the status characters.
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*
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* The reshape ratio shows the progress of
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* changing the raid layout or the number of
|
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* disks of a raid set
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*/
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DMEMIT(" %llu/%llu",
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(unsigned long long) sync,
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(unsigned long long) rs->md.resync_max_sectors);
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DMEMIT(" %llu/%llu", (unsigned long long) progress,
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(unsigned long long) resync_max_sectors);
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/*
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* v1.5.0+:
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*
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* Sync action:
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* See Documentation/device-mapper/dm-raid.c for
|
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* See Documentation/device-mapper/dm-raid.txt for
|
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* information on each of these states.
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*/
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DMEMIT(" %s", decipher_sync_action(&rs->md));
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DMEMIT(" %s", sync_action);
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/*
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* v1.5.0+:
|
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*
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* resync_mismatches/mismatch_cnt
|
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* This field shows the number of discrepancies found when
|
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* performing a "check" of the array.
|
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* performing a "check" of the raid set.
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*/
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DMEMIT(" %llu",
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(strcmp(rs->md.last_sync_action, "check")) ? 0 :
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(unsigned long long)
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atomic64_read(&rs->md.resync_mismatches));
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DMEMIT(" %llu", (unsigned long long) resync_mismatches);
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/*
|
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* v1.8.0+:
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*
|
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* data_offset (needed for out of space reshaping)
|
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* This field shows the data offset into the data
|
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* image LV where the first stripes data starts.
|
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*
|
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* We keep data_offset equal on all raid disks of the set,
|
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* so retrieving it from the first raid disk is sufficient.
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*/
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DMEMIT(" %llu", (unsigned long long) rs->dev[0].rdev.data_offset);
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break;
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case STATUSTYPE_TABLE:
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/* The string you would use to construct this array */
|
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for (i = 0; i < rs->md.raid_disks; i++) {
|
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if (_test_flag(CTR_FLAG_REBUILD, rs->ctr_flags) &&
|
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rs->dev[i].data_dev &&
|
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!test_bit(In_sync, &rs->dev[i].rdev.flags))
|
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raid_param_cnt += 2; /* for rebuilds */
|
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if (rs->dev[i].data_dev &&
|
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test_bit(WriteMostly, &rs->dev[i].rdev.flags))
|
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raid_param_cnt += 2;
|
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}
|
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|
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raid_param_cnt += (hweight32(rs->ctr_flags & ~CTR_FLAG_REBUILD) * 2);
|
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if (rs->ctr_flags & (CTR_FLAG_SYNC | CTR_FLAG_NOSYNC))
|
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raid_param_cnt--;
|
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|
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DMEMIT("%s %u %u", rs->raid_type->name,
|
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raid_param_cnt, rs->md.chunk_sectors);
|
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|
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if (_test_flag(CTR_FLAG_SYNC, rs->ctr_flags) &&
|
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rs->md.recovery_cp == MaxSector)
|
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DMEMIT(" sync");
|
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if (_test_flag(CTR_FLAG_NOSYNC, rs->ctr_flags))
|
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DMEMIT(" nosync");
|
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|
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for (i = 0; i < rs->md.raid_disks; i++)
|
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if (_test_flag(CTR_FLAG_REBUILD, rs->ctr_flags) &&
|
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rs->dev[i].data_dev &&
|
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!test_bit(In_sync, &rs->dev[i].rdev.flags))
|
||||
DMEMIT(" rebuild %u", i);
|
||||
|
||||
if (_test_flag(CTR_FLAG_DAEMON_SLEEP, rs->ctr_flags))
|
||||
DMEMIT(" daemon_sleep %lu",
|
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rs->md.bitmap_info.daemon_sleep);
|
||||
|
||||
if (_test_flag(CTR_FLAG_MIN_RECOVERY_RATE, rs->ctr_flags))
|
||||
DMEMIT(" min_recovery_rate %d", rs->md.sync_speed_min);
|
||||
|
||||
if (_test_flag(CTR_FLAG_MAX_RECOVERY_RATE, rs->ctr_flags))
|
||||
DMEMIT(" max_recovery_rate %d", rs->md.sync_speed_max);
|
||||
|
||||
for (i = 0; i < rs->md.raid_disks; i++)
|
||||
if (rs->dev[i].data_dev &&
|
||||
test_bit(WriteMostly, &rs->dev[i].rdev.flags))
|
||||
DMEMIT(" write_mostly %u", i);
|
||||
|
||||
if (_test_flag(CTR_FLAG_MAX_WRITE_BEHIND, rs->ctr_flags))
|
||||
DMEMIT(" max_write_behind %lu",
|
||||
rs->md.bitmap_info.max_write_behind);
|
||||
|
||||
if (_test_flag(CTR_FLAG_STRIPE_CACHE, rs->ctr_flags)) {
|
||||
struct r5conf *conf = rs->md.private;
|
||||
|
||||
/* convert from kiB to sectors */
|
||||
DMEMIT(" stripe_cache %d",
|
||||
conf ? conf->max_nr_stripes * 2 : 0);
|
||||
}
|
||||
|
||||
if (_test_flag(CTR_FLAG_REGION_SIZE, rs->ctr_flags))
|
||||
DMEMIT(" region_size %lu",
|
||||
rs->md.bitmap_info.chunksize >> 9);
|
||||
|
||||
if (_test_flag(CTR_FLAG_RAID10_COPIES, rs->ctr_flags))
|
||||
DMEMIT(" raid10_copies %u",
|
||||
raid10_md_layout_to_copies(rs->md.layout));
|
||||
/* Report the table line string you would use to construct this raid set */
|
||||
|
||||
/* Calculate raid parameter count */
|
||||
rdev_for_each(rdev, mddev)
|
||||
if (test_bit(WriteMostly, &rdev->flags))
|
||||
write_mostly_params += 2;
|
||||
raid_param_cnt += memweight(rs->rebuild_disks,
|
||||
DISKS_ARRAY_ELEMS * sizeof(*rs->rebuild_disks)) * 2 +
|
||||
write_mostly_params +
|
||||
hweight32(rs->ctr_flags & CTR_FLAG_OPTIONS_NO_ARGS) +
|
||||
hweight32(rs->ctr_flags & CTR_FLAG_OPTIONS_ONE_ARG) * 2;
|
||||
/* Emit table line */
|
||||
DMEMIT("%s %u %u", rs->raid_type->name, raid_param_cnt, mddev->new_chunk_sectors);
|
||||
if (_test_flag(CTR_FLAG_RAID10_FORMAT, rs->ctr_flags))
|
||||
DMEMIT(" raid10_format %s",
|
||||
raid10_md_layout_to_format(rs->md.layout));
|
||||
DMEMIT(" %s %s", _argname_by_flag(CTR_FLAG_RAID10_FORMAT),
|
||||
raid10_md_layout_to_format(mddev->layout));
|
||||
if (_test_flag(CTR_FLAG_RAID10_COPIES, rs->ctr_flags))
|
||||
DMEMIT(" %s %d", _argname_by_flag(CTR_FLAG_RAID10_COPIES),
|
||||
raid10_md_layout_to_copies(mddev->layout));
|
||||
if (_test_flag(CTR_FLAG_NOSYNC, rs->ctr_flags))
|
||||
DMEMIT(" %s", _argname_by_flag(CTR_FLAG_NOSYNC));
|
||||
if (_test_flag(CTR_FLAG_SYNC, rs->ctr_flags))
|
||||
DMEMIT(" %s", _argname_by_flag(CTR_FLAG_SYNC));
|
||||
if (_test_flag(CTR_FLAG_REGION_SIZE, rs->ctr_flags))
|
||||
DMEMIT(" %s %llu", _argname_by_flag(CTR_FLAG_REGION_SIZE),
|
||||
(unsigned long long) to_sector(mddev->bitmap_info.chunksize));
|
||||
if (_test_flag(CTR_FLAG_DATA_OFFSET, rs->ctr_flags))
|
||||
DMEMIT(" %s %llu", _argname_by_flag(CTR_FLAG_DATA_OFFSET),
|
||||
(unsigned long long) rs->data_offset);
|
||||
if (_test_flag(CTR_FLAG_DAEMON_SLEEP, rs->ctr_flags))
|
||||
DMEMIT(" %s %lu", _argname_by_flag(CTR_FLAG_DAEMON_SLEEP),
|
||||
mddev->bitmap_info.daemon_sleep);
|
||||
if (_test_flag(CTR_FLAG_DELTA_DISKS, rs->ctr_flags))
|
||||
DMEMIT(" %s %d", _argname_by_flag(CTR_FLAG_DELTA_DISKS),
|
||||
mddev->delta_disks);
|
||||
if (_test_flag(CTR_FLAG_STRIPE_CACHE, rs->ctr_flags))
|
||||
DMEMIT(" %s %d", _argname_by_flag(CTR_FLAG_STRIPE_CACHE),
|
||||
max_nr_stripes);
|
||||
rdev_for_each(rdev, mddev)
|
||||
if (test_bit(rdev->raid_disk, (void *) rs->rebuild_disks))
|
||||
DMEMIT(" %s %u", _argname_by_flag(CTR_FLAG_REBUILD),
|
||||
rdev->raid_disk);
|
||||
rdev_for_each(rdev, mddev)
|
||||
if (test_bit(WriteMostly, &rdev->flags))
|
||||
DMEMIT(" %s %d", _argname_by_flag(CTR_FLAG_WRITE_MOSTLY),
|
||||
rdev->raid_disk);
|
||||
if (_test_flag(CTR_FLAG_MAX_WRITE_BEHIND, rs->ctr_flags))
|
||||
DMEMIT(" %s %lu", _argname_by_flag(CTR_FLAG_MAX_WRITE_BEHIND),
|
||||
mddev->bitmap_info.max_write_behind);
|
||||
if (_test_flag(CTR_FLAG_MAX_RECOVERY_RATE, rs->ctr_flags))
|
||||
DMEMIT(" %s %d", _argname_by_flag(CTR_FLAG_MAX_RECOVERY_RATE),
|
||||
mddev->sync_speed_max);
|
||||
if (_test_flag(CTR_FLAG_MIN_RECOVERY_RATE, rs->ctr_flags))
|
||||
DMEMIT(" %s %d", _argname_by_flag(CTR_FLAG_MIN_RECOVERY_RATE),
|
||||
mddev->sync_speed_min);
|
||||
DMEMIT(" %d", rs->raid_disks);
|
||||
rdev_for_each(rdev, mddev) {
|
||||
struct raid_dev *rd = container_of(rdev, struct raid_dev, rdev);
|
||||
|
||||
DMEMIT(" %d", rs->md.raid_disks);
|
||||
for (i = 0; i < rs->md.raid_disks; i++) {
|
||||
if (rs->dev[i].meta_dev)
|
||||
DMEMIT(" %s", rs->dev[i].meta_dev->name);
|
||||
else
|
||||
DMEMIT(" -");
|
||||
|
||||
if (rs->dev[i].data_dev)
|
||||
DMEMIT(" %s", rs->dev[i].data_dev->name);
|
||||
else
|
||||
DMEMIT(" -");
|
||||
DMEMIT(" %s %s", _get_dev_name(rd->meta_dev),
|
||||
_get_dev_name(rd->data_dev));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
@ -2519,11 +2603,10 @@ static int raid_message(struct dm_target *ti, unsigned argc, char **argv)
|
|||
test_bit(MD_RECOVERY_NEEDED, &mddev->recovery))
|
||||
return -EBUSY;
|
||||
else if (!strcasecmp(argv[0], "resync"))
|
||||
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
|
||||
else if (!strcasecmp(argv[0], "recover")) {
|
||||
; /* MD_RECOVERY_NEEDED set below */
|
||||
else if (!strcasecmp(argv[0], "recover"))
|
||||
set_bit(MD_RECOVERY_RECOVER, &mddev->recovery);
|
||||
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
|
||||
} else {
|
||||
else {
|
||||
if (!strcasecmp(argv[0], "check"))
|
||||
set_bit(MD_RECOVERY_CHECK, &mddev->recovery);
|
||||
else if (!!strcasecmp(argv[0], "repair"))
|
||||
|
@ -2536,11 +2619,11 @@ static int raid_message(struct dm_target *ti, unsigned argc, char **argv)
|
|||
* canceling read-auto mode
|
||||
*/
|
||||
mddev->ro = 0;
|
||||
if (!mddev->suspended)
|
||||
if (!mddev->suspended && mddev->sync_thread)
|
||||
md_wakeup_thread(mddev->sync_thread);
|
||||
}
|
||||
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
|
||||
if (!mddev->suspended)
|
||||
if (!mddev->suspended && mddev->thread)
|
||||
md_wakeup_thread(mddev->thread);
|
||||
|
||||
return 0;
|
||||
|
@ -2711,24 +2794,12 @@ static void raid_resume(struct dm_target *ti)
|
|||
* devices are reachable again.
|
||||
*/
|
||||
attempt_restore_of_faulty_devices(rs);
|
||||
|
||||
} else {
|
||||
mddev->in_sync = 0;
|
||||
|
||||
/*
|
||||
* If any of the constructor flags got passed in
|
||||
* but "region_size" (gets always passed in for
|
||||
* mappings with bitmap), we expect userspace to
|
||||
* reset them and reload the mapping anyway.
|
||||
*
|
||||
* -> don't unfreeze resynchronization until imminant
|
||||
* reload of the table w/o theses flags
|
||||
*/
|
||||
if (!_test_flags(ALL_FREEZE_FLAGS, rs->ctr_flags))
|
||||
clear_bit(MD_RECOVERY_FROZEN, &mddev->recovery);
|
||||
}
|
||||
|
||||
mddev->ro = 0;
|
||||
mddev->in_sync = 0;
|
||||
clear_bit(MD_RECOVERY_FROZEN, &mddev->recovery);
|
||||
|
||||
if (mddev->suspended)
|
||||
mddev_resume(mddev);
|
||||
}
|
||||
|
@ -2778,4 +2849,5 @@ MODULE_ALIAS("dm-raid4");
|
|||
MODULE_ALIAS("dm-raid5");
|
||||
MODULE_ALIAS("dm-raid6");
|
||||
MODULE_AUTHOR("Neil Brown <dm-devel@redhat.com>");
|
||||
MODULE_AUTHOR("Heinz Mauelshagen <dm-devel@redhat.com>");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
|
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