From f5b2dddd258084836634e169c84400e82825996c Mon Sep 17 00:00:00 2001 From: Xiao Ni Date: Wed, 11 Sep 2024 16:54:28 +0800 Subject: [PATCH 179/201] mdadm/tests: 07changelevels fix There are five changes to this case. 1. remove testdev check. It can't work anymore and check if it's a block device directly. 2. It can't change level and chunk size at the same time 3. Sleep more than 10s before check wait. The test devices are small. Sometimes it can finish so quickly once the reshape just starts. mdadm will be stuck before it waits reshape to start. So the sync speed is limited. And it restores the sync speed when it waits reshape to finish. It's good for case without backup file. It uses systemd service mdadm-grow-continue to monitor reshape progress when specifying backup file. If reshape finishes so quickly before it starts monitoring reshape progress, the daemon will be stuck too. Because reshape_progress is 0 which means the reshape hasn't been started. So give more time to let service can get right information from kernel space. But before getting these information. It needs to suspend array. At the same time the reshape is running. The kernel reshape daemon will update metadata 10s. So it needs to limit the sync speed more than 10s before restoring sync speed. Then systemd service can suspend array and start monitoring reshape progress. 4. Wait until mdadm-grow-continue service exits mdadm --wait doesn't wait systemd service. For the case that needs backup file, systemd service deletes the backup file after reshape finishes. In this test case, it runs next case when reshape finishes. And it fails because it can't create backup file because the backup file exits. 5. Don't reshape from raid5 to raid1. It can't work now. Signed-off-by: Xiao Ni Signed-off-by: Mariusz Tkaczyk --- dev/null | 0 tests/07changelevels | 27 ++++++++++++--------------- tests/07changelevels.broken | 9 --------- tests/func.sh | 4 ++++ 4 files changed, 16 insertions(+), 24 deletions(-) create mode 100644 dev/null delete mode 100644 tests/07changelevels.broken diff --git a/dev/null b/dev/null new file mode 100644 index 00000000..e69de29b diff --git a/tests/07changelevels b/tests/07changelevels index a328874a..3df8660e 100644 --- a/tests/07changelevels +++ b/tests/07changelevels @@ -10,7 +10,6 @@ export MDADM_GROW_VERIFY=1 dotest() { sleep 2 check wait - testdev $md0 $1 19968 64 nd blockdev --flushbufs $md0 cmp -s -n $[textK*1024] $md0 /tmp/RandFile || { echo cmp failed; exit 2; } # write something new - shift chars 4 space @@ -24,7 +23,7 @@ checkgeo() { # level raid_disks chunk_size layout dev=$1 shift - sleep 0.5 + sleep 15 check wait sleep 1 for attr in level raid_disks chunk_size layout @@ -43,22 +42,25 @@ checkgeo() { bu=/tmp/md-test-backup rm -f $bu -mdadm -CR $md0 -l1 -n2 -x1 $dev0 $dev1 $dev2 -z 19968 -testdev $md0 1 $mdsize1a 64 +mdadm -CR $md0 -l1 -n2 -x1 $dev0 $dev1 $dev2 +[ -b $md0 ] || die "$1 isn't a block device." dd if=/tmp/RandFile of=$md0 dotest 1 -mdadm --grow $md0 -l5 -n3 --chunk 64 +mdadm --grow $md0 -l5 -n3 +checkgeo md0 raid5 3 dotest 2 mdadm $md0 --add $dev3 $dev4 mdadm --grow $md0 -n4 --chunk 32 +checkgeo md0 raid5 4 $[32*1024] dotest 3 mdadm -G $md0 -l6 --backup-file $bu +checkgeo md0 raid6 5 $[32*1024] dotest 3 -mdadm -G /dev/md0 --array-size 39936 +mdadm -G /dev/md0 --array-size 37888 mdadm -G $md0 -n4 --backup-file $bu checkgeo md0 raid6 4 $[32*1024] dotest 2 @@ -67,14 +69,11 @@ mdadm -G $md0 -l5 --backup-file $bu checkgeo md0 raid5 3 $[32*1024] dotest 2 -mdadm -G /dev/md0 --array-size 19968 +mdadm -G /dev/md0 --array-size 18944 mdadm -G $md0 -n2 --backup-file $bu checkgeo md0 raid5 2 $[32*1024] dotest 1 -mdadm -G --level=1 $md0 -dotest 1 - # now repeat that last few steps only with a degraded array. mdadm -S $md0 mdadm -CR $md0 -l6 -n5 $dev0 $dev1 $dev2 $dev3 $dev4 @@ -83,7 +82,7 @@ dotest 3 mdadm $md0 --fail $dev0 -mdadm -G /dev/md0 --array-size 37888 +mdadm -G /dev/md0 --array-size 35840 mdadm -G $md0 -n4 --backup-file $bu dotest 2 checkgeo md0 raid6 4 $[512*1024] @@ -103,12 +102,10 @@ dotest 2 mdadm -G $md0 -l5 --backup-file $bu dotest 2 -mdadm -G /dev/md0 --array-size 18944 +mdadm -G /dev/md0 --array-size 17920 mdadm -G $md0 -n2 --backup-file $bu dotest 1 checkgeo md0 raid5 2 $[512*1024] mdadm $md0 --fail $dev2 -mdadm -G --level=1 $md0 -dotest 1 -checkgeo md0 raid1 2 +mdadm -S $md0 diff --git a/tests/07changelevels.broken b/tests/07changelevels.broken deleted file mode 100644 index 9b930d93..00000000 --- a/tests/07changelevels.broken +++ /dev/null @@ -1,9 +0,0 @@ -always fails - -Fails with errors: - - mdadm: /dev/loop0 is smaller than given size. 18976K < 19968K + metadata - mdadm: /dev/loop1 is smaller than given size. 18976K < 19968K + metadata - mdadm: /dev/loop2 is smaller than given size. 18976K < 19968K + metadata - - ERROR: /dev/md0 isn't a block device. diff --git a/tests/func.sh b/tests/func.sh index e7ccc4fc..567d91d9 100644 --- a/tests/func.sh +++ b/tests/func.sh @@ -362,6 +362,10 @@ check() { do sleep 0.5 done + while ps auxf | grep "mdadm --grow --continue" | grep -v grep + do + sleep 1 + done echo $min > /proc/sys/dev/raid/speed_limit_min echo $max > /proc/sys/dev/raid/speed_limit_max ;; -- 2.41.0