* [PATCH 000 of 3] md: bug fixes for md for 2.6.21
@ 2007-03-23 1:10 NeilBrown
2007-03-23 1:10 ` [PATCH 001 of 3] md: Allow raid4 arrays to be reshaped NeilBrown
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: NeilBrown @ 2007-03-23 1:10 UTC (permalink / raw)
To: Andrew Morton; +Cc: linux-raid, linux-kernel
A minor new feature and 2 bug fixes for md suitable for 2.6.21
The minor feature is to make reshape (adding a drive to an array and
restriping it) work for raid4. The code is all ready, it just wasn't
used.
Thanks,
NeilBrown
[PATCH 001 of 3] md: Allow raid4 arrays to be reshaped.
[PATCH 002 of 3] md: Clear the congested_fn when stopping a raid5
[PATCH 003 of 3] md: Convert compile time warnings into runtime warnings.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH 001 of 3] md: Allow raid4 arrays to be reshaped.
2007-03-23 1:10 [PATCH 000 of 3] md: bug fixes for md for 2.6.21 NeilBrown
@ 2007-03-23 1:10 ` NeilBrown
2007-03-23 1:10 ` [PATCH 002 of 3] md: Clear the congested_fn when stopping a raid5 NeilBrown
2007-03-23 1:10 ` [PATCH 003 of 3] md: Convert compile time warnings into runtime warnings NeilBrown
2 siblings, 0 replies; 4+ messages in thread
From: NeilBrown @ 2007-03-23 1:10 UTC (permalink / raw)
To: Andrew Morton; +Cc: linux-raid, linux-kernel
All that is missing the the function pointers in raid4_pers.
Signed-off-by: Neil Brown <neilb@suse.de>
### Diffstat output
./drivers/md/raid5.c | 4 ++++
1 file changed, 4 insertions(+)
diff .prev/drivers/md/raid5.c ./drivers/md/raid5.c
--- .prev/drivers/md/raid5.c 2007-03-23 11:13:29.000000000 +1100
+++ ./drivers/md/raid5.c 2007-03-23 11:13:29.000000000 +1100
@@ -4727,6 +4727,10 @@ static struct mdk_personality raid4_pers
.spare_active = raid5_spare_active,
.sync_request = sync_request,
.resize = raid5_resize,
+#ifdef CONFIG_MD_RAID5_RESHAPE
+ .check_reshape = raid5_check_reshape,
+ .start_reshape = raid5_start_reshape,
+#endif
.quiesce = raid5_quiesce,
};
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH 002 of 3] md: Clear the congested_fn when stopping a raid5
2007-03-23 1:10 [PATCH 000 of 3] md: bug fixes for md for 2.6.21 NeilBrown
2007-03-23 1:10 ` [PATCH 001 of 3] md: Allow raid4 arrays to be reshaped NeilBrown
@ 2007-03-23 1:10 ` NeilBrown
2007-03-23 1:10 ` [PATCH 003 of 3] md: Convert compile time warnings into runtime warnings NeilBrown
2 siblings, 0 replies; 4+ messages in thread
From: NeilBrown @ 2007-03-23 1:10 UTC (permalink / raw)
To: Andrew Morton; +Cc: linux-raid, linux-kernel
If this mddev and queue got reused for another array that doesn't
register a congested_fn, this function would get called incorretly.
Signed-off-by: Neil Brown <neilb@suse.de>
### Diffstat output
./drivers/md/md.c | 1 +
./drivers/md/raid5.c | 3 ++-
2 files changed, 3 insertions(+), 1 deletion(-)
diff .prev/drivers/md/md.c ./drivers/md/md.c
--- .prev/drivers/md/md.c 2007-03-23 11:13:41.000000000 +1100
+++ ./drivers/md/md.c 2007-03-23 11:13:41.000000000 +1100
@@ -3325,6 +3325,7 @@ static int do_md_stop(mddev_t * mddev, i
mddev->queue->merge_bvec_fn = NULL;
mddev->queue->unplug_fn = NULL;
mddev->queue->issue_flush_fn = NULL;
+ mddev->queue->backing_dev_info.congested_fn = NULL;
if (mddev->pers->sync_request)
sysfs_remove_group(&mddev->kobj, &md_redundancy_group);
diff .prev/drivers/md/raid5.c ./drivers/md/raid5.c
--- .prev/drivers/md/raid5.c 2007-03-23 11:13:29.000000000 +1100
+++ ./drivers/md/raid5.c 2007-03-23 11:13:41.000000000 +1100
@@ -4269,8 +4269,8 @@ static int run(mddev_t *mddev)
mddev->queue->unplug_fn = raid5_unplug_device;
mddev->queue->issue_flush_fn = raid5_issue_flush;
- mddev->queue->backing_dev_info.congested_fn = raid5_congested;
mddev->queue->backing_dev_info.congested_data = mddev;
+ mddev->queue->backing_dev_info.congested_fn = raid5_congested;
mddev->array_size = mddev->size * (conf->previous_raid_disks -
conf->max_degraded);
@@ -4301,6 +4301,7 @@ static int stop(mddev_t *mddev)
mddev->thread = NULL;
shrink_stripes(conf);
kfree(conf->stripe_hashtbl);
+ mddev->queue->backing_dev_info.congested_fn = NULL;
blk_sync_queue(mddev->queue); /* the unplug fn references 'conf'*/
sysfs_remove_group(&mddev->kobj, &raid5_attrs_group);
kfree(conf->disks);
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH 003 of 3] md: Convert compile time warnings into runtime warnings.
2007-03-23 1:10 [PATCH 000 of 3] md: bug fixes for md for 2.6.21 NeilBrown
2007-03-23 1:10 ` [PATCH 001 of 3] md: Allow raid4 arrays to be reshaped NeilBrown
2007-03-23 1:10 ` [PATCH 002 of 3] md: Clear the congested_fn when stopping a raid5 NeilBrown
@ 2007-03-23 1:10 ` NeilBrown
2 siblings, 0 replies; 4+ messages in thread
From: NeilBrown @ 2007-03-23 1:10 UTC (permalink / raw)
To: Andrew Morton; +Cc: linux-raid, linux-kernel
... still not sure why we need this ....
Signed-off-by: Neil Brown <neilb@suse.de>
### Diffstat output
./drivers/md/md.c | 41 +++++++++++++++++++++++++++++++----------
./drivers/md/raid5.c | 12 ++++++++++--
2 files changed, 41 insertions(+), 12 deletions(-)
diff .prev/drivers/md/md.c ./drivers/md/md.c
--- .prev/drivers/md/md.c 2007-03-23 11:13:41.000000000 +1100
+++ ./drivers/md/md.c 2007-03-23 12:06:34.000000000 +1100
@@ -1319,6 +1319,7 @@ static int bind_rdev_to_array(mdk_rdev_t
char b[BDEVNAME_SIZE];
struct kobject *ko;
char *s;
+ int err;
if (rdev->mddev) {
MD_BUG();
@@ -1353,20 +1354,29 @@ static int bind_rdev_to_array(mdk_rdev_t
while ( (s=strchr(rdev->kobj.k_name, '/')) != NULL)
*s = '!';
- list_add(&rdev->same_set, &mddev->disks);
rdev->mddev = mddev;
printk(KERN_INFO "md: bind<%s>\n", b);
rdev->kobj.parent = &mddev->kobj;
- kobject_add(&rdev->kobj);
+ if ((err = kobject_add(&rdev->kobj)))
+ goto fail;
if (rdev->bdev->bd_part)
ko = &rdev->bdev->bd_part->kobj;
else
ko = &rdev->bdev->bd_disk->kobj;
- sysfs_create_link(&rdev->kobj, ko, "block");
+ if ((err = sysfs_create_link(&rdev->kobj, ko, "block"))) {
+ kobject_del(&rdev->kobj);
+ goto fail;
+ }
+ list_add(&rdev->same_set, &mddev->disks);
bd_claim_by_disk(rdev->bdev, rdev, mddev->gendisk);
return 0;
+
+ fail:
+ printk(KERN_WARNING "md: failed to register dev-%s for %s\n",
+ b, mdname(mddev));
+ return err;
}
static void unbind_rdev_from_array(mdk_rdev_t * rdev)
@@ -2966,7 +2976,9 @@ static struct kobject *md_probe(dev_t de
mddev->kobj.k_name = NULL;
snprintf(mddev->kobj.name, KOBJ_NAME_LEN, "%s", "md");
mddev->kobj.ktype = &md_ktype;
- kobject_register(&mddev->kobj);
+ if (kobject_register(&mddev->kobj))
+ printk(KERN_WARNING "md: cannot register %s/md - name in use\n",
+ disk->disk_name);
return NULL;
}
@@ -3144,9 +3156,12 @@ static int do_md_run(mddev_t * mddev)
bitmap_destroy(mddev);
return err;
}
- if (mddev->pers->sync_request)
- sysfs_create_group(&mddev->kobj, &md_redundancy_group);
- else if (mddev->ro == 2) /* auto-readonly not meaningful */
+ if (mddev->pers->sync_request) {
+ if (sysfs_create_group(&mddev->kobj, &md_redundancy_group))
+ printk(KERN_WARNING
+ "md: cannot register extra attributes for %s\n",
+ mdname(mddev));
+ } else if (mddev->ro == 2) /* auto-readonly not meaningful */
mddev->ro = 0;
atomic_set(&mddev->writes_pending,0);
@@ -3160,7 +3175,9 @@ static int do_md_run(mddev_t * mddev)
if (rdev->raid_disk >= 0) {
char nm[20];
sprintf(nm, "rd%d", rdev->raid_disk);
- sysfs_create_link(&mddev->kobj, &rdev->kobj, nm);
+ if (sysfs_create_link(&mddev->kobj, &rdev->kobj, nm))
+ printk("md: cannot register %s for %s\n",
+ nm, mdname(mddev));
}
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
@@ -5388,8 +5405,12 @@ static int remove_and_add_spares(mddev_t
if (mddev->pers->hot_add_disk(mddev,rdev)) {
char nm[20];
sprintf(nm, "rd%d", rdev->raid_disk);
- sysfs_create_link(&mddev->kobj,
- &rdev->kobj, nm);
+ if (sysfs_create_link(&mddev->kobj,
+ &rdev->kobj, nm))
+ printk(KERN_WARNING
+ "md: cannot register "
+ "%s for %s\n",
+ nm, mdname(mddev));
spares++;
md_new_event(mddev);
} else
diff .prev/drivers/md/raid5.c ./drivers/md/raid5.c
--- .prev/drivers/md/raid5.c 2007-03-23 11:13:41.000000000 +1100
+++ ./drivers/md/raid5.c 2007-03-23 12:06:00.000000000 +1100
@@ -4265,7 +4265,10 @@ static int run(mddev_t *mddev)
}
/* Ok, everything is just fine now */
- sysfs_create_group(&mddev->kobj, &raid5_attrs_group);
+ if (sysfs_create_group(&mddev->kobj, &raid5_attrs_group))
+ printk(KERN_WARNING
+ "raid5: failed to create sysfs attributes for %s\n",
+ mdname(mddev));
mddev->queue->unplug_fn = raid5_unplug_device;
mddev->queue->issue_flush_fn = raid5_issue_flush;
@@ -4574,7 +4577,12 @@ static int raid5_start_reshape(mddev_t *
added_devices++;
rdev->recovery_offset = 0;
sprintf(nm, "rd%d", rdev->raid_disk);
- sysfs_create_link(&mddev->kobj, &rdev->kobj, nm);
+ if (sysfs_create_link(&mddev->kobj,
+ &rdev->kobj, nm))
+ printk(KERN_WARNING
+ "raid5: failed to create "
+ " link %s for %s\n",
+ nm, mdname(mddev));
} else
break;
}
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2007-03-23 1:10 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2007-03-23 1:10 [PATCH 000 of 3] md: bug fixes for md for 2.6.21 NeilBrown
2007-03-23 1:10 ` [PATCH 001 of 3] md: Allow raid4 arrays to be reshaped NeilBrown
2007-03-23 1:10 ` [PATCH 002 of 3] md: Clear the congested_fn when stopping a raid5 NeilBrown
2007-03-23 1:10 ` [PATCH 003 of 3] md: Convert compile time warnings into runtime warnings NeilBrown
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