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authorHeinz Mauelshagen <heinzm@redhat.com>2017-03-18 01:39:12 +0100
committerMike Snitzer <snitzer@redhat.com>2017-03-27 11:45:26 -0400
commit4464e36e06470e3d68dc26a874f0dbdffa09a6e8 (patch)
tree87f6c3f8d3167467ea2e9cefdd977ee4381ae1d7 /drivers/md/dm-raid.c
parent78e470c26f524f4706c2555613b9641d85190cbe (diff)
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dm raid: fix table line argument order in status
Commit 3a1c1ef2f ("dm raid: enhance status interface and fixup takeover/raid0") added new table line arguments and introduced an ordering flaw. The sequence of the raid10_copies and raid10_format raid parameters got reversed which causes lvm2 userspace to fail by falsely assuming a changed table line. Sequence those 2 parameters as before so that old lvm2 can function properly with new kernels by adjusting the table line output as documented in Documentation/device-mapper/dm-raid.txt. Also, add missing version 1.10.1 highlight to the documention. Fixes: 3a1c1ef2f ("dm raid: enhance status interface and fixup takeover/raid0") Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-raid.c')
-rw-r--r--drivers/md/dm-raid.c62
1 files changed, 32 insertions, 30 deletions
diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index f8564d63982f..e07185fca638 100644
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -3382,38 +3382,28 @@ static void raid_status(struct dm_target *ti, status_type_t type,
hweight32(rs->ctr_flags & CTR_FLAG_OPTIONS_NO_ARGS) +
hweight32(rs->ctr_flags & CTR_FLAG_OPTIONS_ONE_ARG) * 2 +
(test_bit(__CTR_FLAG_JOURNAL_DEV, &rs->ctr_flags) ? 2 : 0);
+
/* Emit table line */
+ /* This has to be in the documented order for userspace! */
DMEMIT("%s %u %u", rs->raid_type->name, raid_param_cnt, mddev->new_chunk_sectors);
- if (test_bit(__CTR_FLAG_RAID10_FORMAT, &rs->ctr_flags))
- DMEMIT(" %s %s", dm_raid_arg_name_by_flag(CTR_FLAG_RAID10_FORMAT),
- raid10_md_layout_to_format(mddev->layout));
- if (test_bit(__CTR_FLAG_RAID10_COPIES, &rs->ctr_flags))
- DMEMIT(" %s %d", dm_raid_arg_name_by_flag(CTR_FLAG_RAID10_COPIES),
- raid10_md_layout_to_copies(mddev->layout));
- if (test_bit(__CTR_FLAG_NOSYNC, &rs->ctr_flags))
- DMEMIT(" %s", dm_raid_arg_name_by_flag(CTR_FLAG_NOSYNC));
if (test_bit(__CTR_FLAG_SYNC, &rs->ctr_flags))
DMEMIT(" %s", dm_raid_arg_name_by_flag(CTR_FLAG_SYNC));
- if (test_bit(__CTR_FLAG_REGION_SIZE, &rs->ctr_flags))
- DMEMIT(" %s %llu", dm_raid_arg_name_by_flag(CTR_FLAG_REGION_SIZE),
- (unsigned long long) to_sector(mddev->bitmap_info.chunksize));
- if (test_bit(__CTR_FLAG_DATA_OFFSET, &rs->ctr_flags))
- DMEMIT(" %s %llu", dm_raid_arg_name_by_flag(CTR_FLAG_DATA_OFFSET),
- (unsigned long long) rs->data_offset);
- if (test_bit(__CTR_FLAG_DAEMON_SLEEP, &rs->ctr_flags))
- DMEMIT(" %s %lu", dm_raid_arg_name_by_flag(CTR_FLAG_DAEMON_SLEEP),
- mddev->bitmap_info.daemon_sleep);
- if (test_bit(__CTR_FLAG_DELTA_DISKS, &rs->ctr_flags))
- DMEMIT(" %s %d", dm_raid_arg_name_by_flag(CTR_FLAG_DELTA_DISKS),
- max(rs->delta_disks, mddev->delta_disks));
- if (test_bit(__CTR_FLAG_STRIPE_CACHE, &rs->ctr_flags))
- DMEMIT(" %s %d", dm_raid_arg_name_by_flag(CTR_FLAG_STRIPE_CACHE),
- max_nr_stripes);
+ if (test_bit(__CTR_FLAG_NOSYNC, &rs->ctr_flags))
+ DMEMIT(" %s", dm_raid_arg_name_by_flag(CTR_FLAG_NOSYNC));
if (rebuild_disks)
for (i = 0; i < rs->raid_disks; i++)
if (test_bit(rs->dev[i].rdev.raid_disk, (void *) rs->rebuild_disks))
DMEMIT(" %s %u", dm_raid_arg_name_by_flag(CTR_FLAG_REBUILD),
rs->dev[i].rdev.raid_disk);
+ if (test_bit(__CTR_FLAG_DAEMON_SLEEP, &rs->ctr_flags))
+ DMEMIT(" %s %lu", dm_raid_arg_name_by_flag(CTR_FLAG_DAEMON_SLEEP),
+ mddev->bitmap_info.daemon_sleep);
+ if (test_bit(__CTR_FLAG_MIN_RECOVERY_RATE, &rs->ctr_flags))
+ DMEMIT(" %s %d", dm_raid_arg_name_by_flag(CTR_FLAG_MIN_RECOVERY_RATE),
+ mddev->sync_speed_min);
+ if (test_bit(__CTR_FLAG_MAX_RECOVERY_RATE, &rs->ctr_flags))
+ DMEMIT(" %s %d", dm_raid_arg_name_by_flag(CTR_FLAG_MAX_RECOVERY_RATE),
+ mddev->sync_speed_max);
if (write_mostly_params)
for (i = 0; i < rs->raid_disks; i++)
if (test_bit(WriteMostly, &rs->dev[i].rdev.flags))
@@ -3422,12 +3412,24 @@ static void raid_status(struct dm_target *ti, status_type_t type,
if (test_bit(__CTR_FLAG_MAX_WRITE_BEHIND, &rs->ctr_flags))
DMEMIT(" %s %lu", dm_raid_arg_name_by_flag(CTR_FLAG_MAX_WRITE_BEHIND),
mddev->bitmap_info.max_write_behind);
- if (test_bit(__CTR_FLAG_MAX_RECOVERY_RATE, &rs->ctr_flags))
- DMEMIT(" %s %d", dm_raid_arg_name_by_flag(CTR_FLAG_MAX_RECOVERY_RATE),
- mddev->sync_speed_max);
- if (test_bit(__CTR_FLAG_MIN_RECOVERY_RATE, &rs->ctr_flags))
- DMEMIT(" %s %d", dm_raid_arg_name_by_flag(CTR_FLAG_MIN_RECOVERY_RATE),
- mddev->sync_speed_min);
+ if (test_bit(__CTR_FLAG_STRIPE_CACHE, &rs->ctr_flags))
+ DMEMIT(" %s %d", dm_raid_arg_name_by_flag(CTR_FLAG_STRIPE_CACHE),
+ max_nr_stripes);
+ if (test_bit(__CTR_FLAG_REGION_SIZE, &rs->ctr_flags))
+ DMEMIT(" %s %llu", dm_raid_arg_name_by_flag(CTR_FLAG_REGION_SIZE),
+ (unsigned long long) to_sector(mddev->bitmap_info.chunksize));
+ if (test_bit(__CTR_FLAG_RAID10_COPIES, &rs->ctr_flags))
+ DMEMIT(" %s %d", dm_raid_arg_name_by_flag(CTR_FLAG_RAID10_COPIES),
+ raid10_md_layout_to_copies(mddev->layout));
+ if (test_bit(__CTR_FLAG_RAID10_FORMAT, &rs->ctr_flags))
+ DMEMIT(" %s %s", dm_raid_arg_name_by_flag(CTR_FLAG_RAID10_FORMAT),
+ raid10_md_layout_to_format(mddev->layout));
+ if (test_bit(__CTR_FLAG_DELTA_DISKS, &rs->ctr_flags))
+ DMEMIT(" %s %d", dm_raid_arg_name_by_flag(CTR_FLAG_DELTA_DISKS),
+ max(rs->delta_disks, mddev->delta_disks));
+ if (test_bit(__CTR_FLAG_DATA_OFFSET, &rs->ctr_flags))
+ DMEMIT(" %s %llu", dm_raid_arg_name_by_flag(CTR_FLAG_DATA_OFFSET),
+ (unsigned long long) rs->data_offset);
if (test_bit(__CTR_FLAG_JOURNAL_DEV, &rs->ctr_flags))
DMEMIT(" %s %s", dm_raid_arg_name_by_flag(CTR_FLAG_JOURNAL_DEV),
__get_dev_name(rs->journal_dev.dev));
@@ -3791,7 +3793,7 @@ static void raid_resume(struct dm_target *ti)
static struct target_type raid_target = {
.name = "raid",
- .version = {1, 10, 1},
+ .version = {1, 11, 0},
.module = THIS_MODULE,
.ctr = raid_ctr,
.dtr = raid_dtr,