Package: mdadm
Version: 3.4-4+b1
Severity: important
Kernel: Debian Stretch 4.9.0-6-amd64 #1 SMP Debian 4.9.88-1+deb9u1
(2018-05-07) x86_64 GNU/Linux
Hello,
mdadm seems to hang while auto assembling array with write journal on boot.
After boot mdadm array is not visible on lsblk and cannot be mounted.
Looking at:
“mdadm --query --detail /dev/md0”
Shows:
“State : inactive”
Also:
“cat /proc/mdstat”
Shows:
“md0 : inactive sdf1[4](S) sdd1[0](S) sde1[1](S) nvme0n1p1[3](S)”
Running “mdadm --assemble /dev/md0” hangs unless array (which appears to
not be running) is stopped first “mdadm –stop /dev/md0”.
After assembling manually array works normally.
Tested with raid 5 & 6 arrays on fresh minimal installs
Array created:
“mdadm --verbose --create /dev/md0 --level=6 --raid-devices=5 /dev/sdb1
/dev/sdc1 /dev/sdd1 /dev/sde1 /dev/sdf1 --write-journal /dev/nvme0n1p1”
Config saved:
“mdadm --detail --scan /dev/md0 >> /etc/mdadm/mdadm.conf”
“ARRAY /dev/md0 metadata=1.2 name=twin-02:0
UUID=0a12f609:3d7fa535:6b7055d2:459c4f02”
“update-initramfs -u”
This looks like a bug as the array should be auto assembled at boot.
Creating array without write-journal option works normally.
Doing some research came across this on a mailing list:
https://lists.debian.org/debian-user/2017/11/msg00204.html
Some Information just after boot on raid 5 array:
--- mdadm.conf
HOMEHOST
MAILADDR root
ARRAY /dev/md0 metadata=1.2 name=twin-02:0
UUID=0a12f609:3d7fa535:6b7055d2:459c4f02
--- /etc/default/mdadm
AUTOCHECK=true
START_DAEMON=true
DAEMON_OPTIONS="--syslog"
VERBOSE=false
--- /proc/mdstat:
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5]
[raid4] [raid10]
md0 : inactive sde1[1](S) sdf1[4](S) sdd1[0](S) nvme0n1p1[3](S)
2213973558 blocks super 1.2
unused devices:
--- /proc/partitions:
major minor #blocks name
259 0 244198584 nvme0n1
259 1 16777216 nvme0n1p1
8 32 732574584 sdc
8 33 732573543 sdc1
8 48 732574584 sdd
8 49 732573543 sdd1
8 0 117220824 sda
8 1 19530752 sda1
8 2 97688576 sda2
8 64 732574584 sde
8 65 732573543 sde1
8 16 732574584 sdb
8 17 732573543 sdb1
8 80 732574584 sdf
8 81 732573543 sdf1
--
Kind Regards,
Chris
