diff options
| -rw-r--r-- | drivers/md/faulty.c | 13 | ||||
| -rw-r--r-- | drivers/md/md.c | 23 | ||||
| -rw-r--r-- | drivers/md/md.h | 2 | ||||
| -rw-r--r-- | drivers/md/raid5.c | 42 |
4 files changed, 41 insertions, 39 deletions
diff --git a/drivers/md/faulty.c b/drivers/md/faulty.c index 8695809b24b..6513b7b3e37 100644 --- a/drivers/md/faulty.c +++ b/drivers/md/faulty.c @@ -255,14 +255,14 @@ static void status(struct seq_file *seq, mddev_t *mddev) } -static int reconfig(mddev_t *mddev, int layout, int chunk_size) +static int reconfig(mddev_t *mddev) { - int mode = layout & ModeMask; - int count = layout >> ModeShift; + int mode = mddev->new_layout & ModeMask; + int count = mddev->new_layout >> ModeShift; conf_t *conf = mddev->private; - if (chunk_size != -1) - return -EINVAL; + if (mddev->new_layout < 0) + return 0; /* new layout */ if (mode == ClearFaults) @@ -279,6 +279,7 @@ static int reconfig(mddev_t *mddev, int layout, int chunk_size) atomic_set(&conf->counters[mode], count); } else return -EINVAL; + mddev->new_layout = -1; mddev->layout = -1; /* makes sure further changes come through */ return 0; } @@ -315,7 +316,7 @@ static int run(mddev_t *mddev) md_set_array_sectors(mddev, faulty_size(mddev, 0, 0)); mddev->private = conf; - reconfig(mddev, mddev->layout, -1); + reconfig(mddev); return 0; } diff --git a/drivers/md/md.c b/drivers/md/md.c index f996d8342a8..5caa421c236 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -2809,9 +2809,12 @@ layout_store(mddev_t *mddev, const char *buf, size_t len) int err; if (mddev->pers->reconfig == NULL) return -EBUSY; - err = mddev->pers->reconfig(mddev, n, -1); - if (err) + mddev->new_layout = n; + err = mddev->pers->reconfig(mddev); + if (err) { + mddev->new_layout = mddev->layout; return err; + } } else { mddev->new_layout = n; if (mddev->reshape_position == MaxSector) @@ -2884,9 +2887,12 @@ chunk_size_store(mddev_t *mddev, const char *buf, size_t len) int err; if (mddev->pers->reconfig == NULL) return -EBUSY; - err = mddev->pers->reconfig(mddev, -1, n); - if (err) + mddev->new_chunk_sectors = n >> 9; + err = mddev->pers->reconfig(mddev); + if (err) { + mddev->new_chunk_sectors = mddev->chunk_sectors; return err; + } } else { mddev->new_chunk_sectors = n >> 9; if (mddev->reshape_position == MaxSector) @@ -5220,8 +5226,13 @@ static int update_array_info(mddev_t *mddev, mdu_array_info_t *info) */ if (mddev->pers->reconfig == NULL) return -EINVAL; - else - return mddev->pers->reconfig(mddev, info->layout, -1); + else { + mddev->new_layout = info->layout; + rv = mddev->pers->reconfig(mddev); + if (rv) + mddev->new_layout = mddev->layout; + return rv; + } } if (info->size >= 0 && mddev->dev_sectors / 2 != info->size) rv = update_size(mddev, (sector_t)info->size * 2); diff --git a/drivers/md/md.h b/drivers/md/md.h index e0a2b8e3985..815013f8da6 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -326,7 +326,7 @@ struct mdk_personality int (*check_reshape) (mddev_t *mddev); int (*start_reshape) (mddev_t *mddev); void (*finish_reshape) (mddev_t *mddev); - int (*reconfig) (mddev_t *mddev, int layout, int chunk_size); + int (*reconfig) (mddev_t *mddev); /* quiesce moves between quiescence states * 0 - fully active * 1 - no new requests allowed diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index b84766e347c..136051bc672 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -5165,7 +5165,7 @@ static void *raid5_takeover_raid6(mddev_t *mddev) } -static int raid5_reconfig(mddev_t *mddev, int new_layout, int new_chunk) +static int raid5_reconfig(mddev_t *mddev) { /* For a 2-drive array, the layout and chunk size can be changed * immediately as not restriping is needed. @@ -5173,15 +5173,16 @@ static int raid5_reconfig(mddev_t *mddev, int new_layout, int new_chunk) * to be used by a reshape pass. */ raid5_conf_t *conf = mddev->private; + int new_chunk = mddev->new_chunk_sectors; - if (new_layout >= 0 && !algorithm_valid_raid5(new_layout)) + if (mddev->new_layout >= 0 && !algorithm_valid_raid5(mddev->new_layout)) return -EINVAL; if (new_chunk > 0) { if (!is_power_of_2(new_chunk)) return -EINVAL; - if (new_chunk < PAGE_SIZE) + if (new_chunk < (PAGE_SIZE>>9)) return -EINVAL; - if (mddev->array_sectors & ((new_chunk>>9)-1)) + if (mddev->array_sectors & (new_chunk-1)) /* not factor of array size */ return -EINVAL; } @@ -5189,48 +5190,37 @@ static int raid5_reconfig(mddev_t *mddev, int new_layout, int new_chunk) /* They look valid */ if (mddev->raid_disks == 2) { - - if (new_layout >= 0) { - conf->algorithm = new_layout; - mddev->layout = mddev->new_layout = new_layout; + /* can make the change immediately */ + if (mddev->new_layout >= 0) { + conf->algorithm = mddev->new_layout; + mddev->layout = mddev->new_layout; } if (new_chunk > 0) { - conf->chunk_sectors = new_chunk >> 9; - mddev->new_chunk_sectors = new_chunk >> 9; - mddev->chunk_sectors = new_chunk >> 9; + conf->chunk_sectors = new_chunk ; + mddev->chunk_sectors = new_chunk; } set_bit(MD_CHANGE_DEVS, &mddev->flags); md_wakeup_thread(mddev->thread); - } else { - if (new_layout >= 0) - mddev->new_layout = new_layout; - if (new_chunk > 0) - mddev->new_chunk_sectors = new_chunk >> 9; } return 0; } -static int raid6_reconfig(mddev_t *mddev, int new_layout, int new_chunk) +static int raid6_reconfig(mddev_t *mddev) { - if (new_layout >= 0 && !algorithm_valid_raid6(new_layout)) + int new_chunk = mddev->new_chunk_sectors; + if (mddev->new_layout >= 0 && !algorithm_valid_raid6(mddev->new_layout)) return -EINVAL; if (new_chunk > 0) { if (!is_power_of_2(new_chunk)) return -EINVAL; - if (new_chunk < PAGE_SIZE) + if (new_chunk < (PAGE_SIZE >> 9)) return -EINVAL; - if (mddev->array_sectors & ((new_chunk>>9)-1)) + if (mddev->array_sectors & (new_chunk-1)) /* not factor of array size */ return -EINVAL; } /* They look valid */ - - if (new_layout >= 0) - mddev->new_layout = new_layout; - if (new_chunk > 0) - mddev->new_chunk_sectors = new_chunk >> 9; - return 0; } |