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| author |   Zhao Heming <heming.zhao@suse.com> | 2020-07-21 02:08:52 +0800 |
|---|---|---|
| committer |   Song Liu <songliubraving@fb.com> | 2020-07-21 17:30:12 -0700 |
| commit | 7c9d5c54fb72d92fe3fd7d3a3eb58b5200e454c4 (patch) | |
| tree | 391a5e5f83425a594929b68c082d8f3df78c3953 /drivers/md | |
| parent | md/raid5: support config stripe_size by sysfs entry (diff) | |
| download | wireguard-linux-7c9d5c54fb72d92fe3fd7d3a3eb58b5200e454c4.tar.xz wireguard-linux-7c9d5c54fb72d92fe3fd7d3a3eb58b5200e454c4.zip | |
md-cluster: fix safemode_delay value when converting to clustered bitmap
When array convert to clustered bitmap, the safe_mode_delay doesn't
clean and vice versa. the /sys/block/mdX/md/safe_mode_delay keep original
value after changing bitmap type. In safe_delay_store(), the code forbids
setting mddev->safemode_delay when array is clustered. So in cluster-md
env, the expected safemode_delay value should be 0.
Reproducible steps:
```
node1 # mdadm --zero-superblock /dev/sd{b,c,d}
node1 # mdadm -C /dev/md0 -b internal -e 1.2 -n 2 -l mirror /dev/sdb /dev/sdc
node1 # cat /sys/block/md0/md/safe_mode_delay
0.204
node1 # mdadm -G /dev/md0 -b none
node1 # mdadm --grow /dev/md0 --bitmap=clustered
node1 # cat /sys/block/md0/md/safe_mode_delay
0.204 <== doesn't change, should ZERO for cluster-md
node1 # mdadm --zero-superblock /dev/sd{b,c,d}
node1 # mdadm -C /dev/md0 -b clustered -e 1.2 -n 2 -l mirror /dev/sdb /dev/sdc
node1 # cat /sys/block/md0/md/safe_mode_delay
0.000
node1 # mdadm -G /dev/md0 -b none
node1 # cat /sys/block/md0/md/safe_mode_delay
0.000 <== doesn't change, should default value
```
Reviewed-by: NeilBrown <neilb@suse.de>
Signed-off-by: Zhao Heming <heming.zhao@suse.com>
Signed-off-by: Song Liu <songliubraving@fb.com>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/md.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 9d740e4181ff..79a6b2f423dd 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -101,6 +101,8 @@ static void mddev_detach(struct mddev *mddev); * count by 2 for every hour elapsed between read errors. */ #define MD_DEFAULT_MAX_CORRECTED_READ_ERRORS 20 +/* Default safemode delay: 200 msec */ +#define DEFAULT_SAFEMODE_DELAY ((200 * HZ)/1000 +1) /* * Current RAID-1,4,5 parallel reconstruction 'guaranteed speed limit' * is 1000 KB/sec, so the extra system load does not show up that much. @@ -6034,7 +6036,7 @@ int md_run(struct mddev *mddev) if (mddev_is_clustered(mddev)) mddev->safemode_delay = 0; else - mddev->safemode_delay = (200 * HZ)/1000 +1; /* 200 msec delay */ + mddev->safemode_delay = DEFAULT_SAFEMODE_DELAY; mddev->in_sync = 1; smp_wmb(); spin_lock(&mddev->lock); @@ -7413,6 +7415,7 @@ static int update_array_info(struct mddev *mddev, mdu_array_info_t *info) mddev->bitmap_info.nodes = 0; md_cluster_ops->leave(mddev); + mddev->safemode_delay = DEFAULT_SAFEMODE_DELAY; } mddev_suspend(mddev); md_bitmap_destroy(mddev); @@ -8408,6 +8411,7 @@ EXPORT_SYMBOL(unregister_md_cluster_operations); int md_setup_cluster(struct mddev *mddev, int nodes) { + int ret; if (!md_cluster_ops) request_module("md-cluster"); spin_lock(&pers_lock); @@ -8419,7 +8423,10 @@ int md_setup_cluster(struct mddev *mddev, int nodes) } spin_unlock(&pers_lock); - return md_cluster_ops->join(mddev, nodes); + ret = md_cluster_ops->join(mddev, nodes); + if (!ret) + mddev->safemode_delay = 0; + return ret; } void md_cluster_stop(struct mddev *mddev) |