[dm-devel] [PATCH 1/2] dm raid: fix table line argument order in status
heinzm at redhat.com
heinzm at redhat.com
Sat Mar 18 00:39:00 UTC 2017
From: Heinz Mauelshagen <heinzm at redhat.com>
Upstream commit 3a1c1ef2fd62087c3d6521de217ddb9360776658
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 falsely assuming a changed table line.
Sequence those 2 parameters as before so that old lvm2
uspace can function properly with new kernels and adjust
the table line output to the defined one as of
Documentation/device-mapper/dm-raid.txt.
Signed-off-by: Heinz Mauelshagen <heinzm at redhat.com>
---
Documentation/device-mapper/dm-raid.txt | 2 ++
drivers/md/dm-raid.c | 62 +++++++++++++++++----------------
2 files changed, 34 insertions(+), 30 deletions(-)
diff --git a/Documentation/device-mapper/dm-raid.txt b/Documentation/device-mapper/dm-raid.txt
index cd2cb2f..9ec88eb 100644
--- a/Documentation/device-mapper/dm-raid.txt
+++ b/Documentation/device-mapper/dm-raid.txt
@@ -331,3 +331,5 @@ Version History
'D' on the status line. If '- -' is passed into the constructor, emit
'- -' on the table line and '-' as the status line health character.
1.10.0 Add support for raid4/5/6 journal device
+1.11.0 Fix table line argument order
+ (wrong raid10_copies/raid10_format sequence)
diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index f8564d6..e07185f 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,
--
2.9.3
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