Package: mdadm
Version: 2.5.6-7
Severity: normal
My RAID1 arrays get checked by checkarray the first sunday of every
month (default mdadm configuration, I think).
I have noticed that /sys/block/md1/md/mismatch_cnt reports a count of
128 unsynchronized blocks. checkarray does not report or fix this issue.
Doing the same manually (echo check >/sys/block/md1/md/sync_action) does
not fix the issue either - mismatch_cnt is reset to 0 at the start of
the resync, and goes up to 128 somewhere between 40% and 50% of the
resync.
I believe checkarray should be made to report this issue, as my
understanding was that the point of checkarray was to help with
unsynchronized arrays ???
smartctl -a does not report any issues on either devices the RAID1 is
based on.
I just noticed today that mdadm.conf only lists 3 of my 5 RAID1 volumes,
I do not know why (I did not edit the file after it was auto-generated).
-- Package-specific info:
--- mount output
/dev/md0 on / type ext2 (rw,errors=remount-ro)
tmpfs on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
procbususb on /proc/bus/usb type usbfs (rw)
udev on /dev type tmpfs (rw,mode=0755)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=620)
tmpfs on /tmp type tmpfs (rw)
tmpfs on /var/tmp type tmpfs (rw,size=1g)
/dev/md1 on /home type ext2 (rw,nosuid,nodev,errors=remount-ro)
/dev/md3 on /mnt/extra0 type ext2 (rw,noexec,nosuid,nodev,errors=remount-ro)
/dev/md4 on /mnt/extra1 type ext2 (rw,noexec,nosuid,nodev,errors=remount-ro)
automount(pid1430) on /mnt/autofs type autofs
(rw,fd=4,pgrp=1430,minproto=2,maxproto=4)
--- mdadm.conf
# Autogenerated by mdcfg. See mdadm.conf(5) for more details on this file.
DEVICE partitions
ARRAY /dev/md0 level=raid1 num-devices=2 devices=/dev/hde1,/dev/hdg1
UUID=436d1e33:5613bb60:73401891:847eb5d1
ARRAY /dev/md1 level=raid1 num-devices=2 devices=/dev/hde2,/dev/hdg2
UUID=096310d2:3269c085:7757eec1:62d16352
ARRAY /dev/md2 level=raid1 num-devices=2 devices=/dev/hde3,/dev/hdg3
UUID=0b80a931:d5aa8c2c:bd233b49:f4b6d4ab
MAILADDR root
--- /proc/mdstat:
Personalities : [raid1]
md4 : active raid1 hde3[1] hdc2[0]
9783488 blocks [2/2] [UU]
md1 : active raid1 hdg2[1] hde2[0]
126953536 blocks [2/2] [UU]
[===========>.........] resync = 56.0% (71133440/126953536)
finish=27.1min speed=34242K/sec
md3 : active raid1 hdg3[1] hdc1[0]
48827904 blocks [2/2] [UU]
md2 : active raid1 hdg4[1] hde4[0]
1975104 blocks [2/2] [UU]
md0 : active raid1 hdg1[1] hde1[0]
17574976 blocks [2/2] [UU]
unused devices: <none>
--- /proc/partitions:
major minor #blocks name
22 0 58615704 hdc
22 1 48827992 hdc1
22 2 9787680 hdc2
33 0 156290904 hde
33 1 17575078 hde1
33 2 126953662 hde2
33 3 9783585 hde3
33 4 1975995 hde4
34 0 195360984 hdg
34 1 17575078 hdg1
34 2 126953662 hdg2
34 3 48853665 hdg3
34 4 1975995 hdg4
9 0 17574976 md0
9 2 1975104 md2
9 3 48827904 md3
9 1 126953536 md1
9 4 9783488 md4
--- initrd.img-2.6.16.36:
--- /proc/modules:
-- System Information:
Debian Release: 4.0
APT prefers testing
APT policy: (500, 'testing'), (50, 'unstable')
Architecture: i386 (i686)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.16.36
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Versions of packages mdadm depends on:
ii debconf [debconf-2.0] 1.5.11 Debian configuration management sy
ii libc6 2.3.6.ds1-8 GNU C Library: Shared libraries
ii lsb-base 3.1-22 Linux Standard Base 3.1 init scrip
ii makedev 2.3.1-83 creates device files in /dev
Versions of packages mdadm recommends:
ii module-init-tools 3.3-pre3-1 tools for managing Linux kernel mo
ii postfix [mail-transport-agent 2.3.4-3 A high-performance mail transport
-- debconf information:
* mdadm/autostart: true
* mdadm/initrdstart: /dev/md0
mdadm/initrdstart_notinconf: false
mdadm/initrdstart_msg_errexist:
mdadm/initrdstart_msg_intro:
mdadm/initrdstart_msg_errblock:
* mdadm/warning:
* mdadm/start_daemon: true
* mdadm/mail_to: root
mdadm/initrdstart_msg_errmd:
mdadm/initrdstart_msg_errconf:
* mdadm/autocheck: true
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