Bug#518834: mdadm: I still regulary see these mismatches
Cristian Ionescu-Idbohrn
cristian.ionescu-idbohrn at axis.com
Sun Mar 8 22:18:44 UTC 2009
Followup-For: Bug #405919
Package: mdadm
Version: 2.6.7.2-1
I changed the cron job so the job is run every sunday.
And I see those mismatches (128 and other powers of 2) every sunday :(
Executing (after the cron job finished):
# echo repair > /sys/block/md1/md/sync_action
# echo check > /sys/block/md1/md/sync_action
cleans it up. But it takes several hours.
I'm doing lvm over raid1 on 2x300GB disks.
Cheers,
-- Package-specific info:
--- mount output
/dev/md0 on / type ext3 (rw,noatime,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)
fusectl on /sys/fs/fuse/connections type fusectl (rw)
/dev/mapper/host-var on /var type ext3 (rw,noatime)
/dev/mapper/host-tmp on /tmp type ext3 (rw,noatime)
/dev/mapper/host-usr on /usr type ext3 (rw,noatime)
/dev/mapper/host-home on /home type ext3 (rw,noatime)
debugfs on /sys/kernel/debug type debugfs (rw)
--- mdadm.conf
# mdadm.conf
#
# Please refer to mdadm.conf(5) for information about this file.
#
# by default, scan all partitions (/proc/partitions) for MD superblocks.
# alternatively, specify devices to scan, using wildcards if desired.
DEVICE partitions
# auto-create devices with Debian standard permissions
CREATE owner=root group=disk mode=0660 auto=yes
# automatically tag new arrays as belonging to the local system
HOMEHOST <system>
# instruct the monitoring daemon where to send mail alerts
MAILADDR root
# definitions of existing MD arrays
ARRAY /dev/md0 level=raid1 num-devices=2 UUID=691befca:2b99a30e:4f4523f6:284bcf3e
ARRAY /dev/md1 level=raid1 num-devices=2 UUID=806c611c:8160fc42:8e29fe5e:7c77705f
# This file was auto-generated on Thu, 05 Jun 2008 14:39:36 +0000
# by mkconf $Id$
--- /proc/mdstat:
Personalities : [raid1]
md1 : active raid1 sda2[0] sdb2[1]
486432064 blocks [2/2] [UU]
md0 : active raid1 sda1[0] sdb1[1]
1951744 blocks [2/2] [UU]
unused devices: <none>
--- /proc/partitions:
major minor #blocks name
8 0 488386584 sda
8 1 1951866 sda1
8 2 486432135 sda2
8 16 488386584 sdb
8 17 1951866 sdb1
8 18 486432135 sdb2
9 0 1951744 md0
9 1 486432064 md1
253 0 5242880 dm-0
253 1 5242880 dm-1
253 2 5242880 dm-2
253 3 10485760 dm-3
253 4 10485760 dm-4
253 5 10485760 dm-5
253 6 5242880 dm-6
253 7 31457280 dm-7
253 8 52428800 dm-8
253 9 104857600 dm-9
--- initrd.img-2.6.26-1-686-bigmem:
38977 blocks
lib/modules/2.6.26-1-686-bigmem/kernel/drivers/md/dm-snapshot.ko
lib/modules/2.6.26-1-686-bigmem/kernel/drivers/md/raid1.ko
lib/modules/2.6.26-1-686-bigmem/kernel/drivers/md/md-mod.ko
lib/modules/2.6.26-1-686-bigmem/kernel/drivers/md/dm-log.ko
lib/modules/2.6.26-1-686-bigmem/kernel/drivers/md/raid456.ko
lib/modules/2.6.26-1-686-bigmem/kernel/drivers/md/linear.ko
lib/modules/2.6.26-1-686-bigmem/kernel/drivers/md/dm-mod.ko
lib/modules/2.6.26-1-686-bigmem/kernel/drivers/md/dm-mirror.ko
lib/modules/2.6.26-1-686-bigmem/kernel/drivers/md/multipath.ko
lib/modules/2.6.26-1-686-bigmem/kernel/drivers/md/raid0.ko
lib/modules/2.6.26-1-686-bigmem/kernel/drivers/md/raid10.ko
scripts/local-top/mdadm
sbin/mdadm
etc/mdadm
etc/mdadm/mdadm.conf
--- /proc/modules:
dm_mirror 15872 0 - Live 0xf9375000
dm_log 9220 1 dm_mirror, Live 0xf92b7000
dm_snapshot 15108 0 - Live 0xf9370000
dm_mod 46952 24 dm_mirror,dm_log,dm_snapshot, Live 0xf9330000
raid1 18784 2 - Live 0xf9305000
md_mod 67804 3 raid1, Live 0xf93d3000
--- volume detail:
--- /proc/cmdline
root=/dev/md0 ro vga=795 apm=off irqpoll
--- grub:
kernel /boot/vmlinuz-2.6.26-1-686-bigmem root=/dev/md0 ro vga=795 apm=off irqpoll
kernel /boot/vmlinuz-2.6.26-1-686-bigmem root=/dev/md0 ro vga=795 apm=off irqpoll single
kernel /boot/vmlinuz-2.6.26-1-686 root=/dev/md0 ro vga=795 apm=off
kernel /boot/vmlinuz-2.6.26-1-686 root=/dev/md0 ro vga=795 apm=off single
-- System Information:
Debian Release: 5.0
APT prefers stable
APT policy: (500, 'stable'), (99, 'unstable')
Architecture: i386 (i686)
Kernel: Linux 2.6.26-1-686-bigmem (SMP w/2 CPU cores)
Locale: LANG=C, LC_CTYPE= (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/bash
Versions of packages mdadm depends on:
ii debconf 1.5.24 Debian configuration management sy
ii libc6 2.7-18 GNU C Library: Shared libraries
ii lsb-base 3.2-20 Linux Standard Base 3.2 init scrip
ii makedev 2.3.1-88 creates device files in /dev
ii udev 0.125-7 /dev/ and hotplug management daemo
Versions of packages mdadm recommends:
ii module-init-tools 3.4-1 tools for managing Linux kernel mo
ii sendmail-bin [mail-transport- 8.14.3-5 powerful, efficient, and scalable
mdadm suggests no packages.
-- debconf information:
mdadm/autostart: true
* mdadm/initrdstart: all
mdadm/initrdstart_notinconf: false
mdadm/initrdstart_msg_errexist:
mdadm/initrdstart_msg_intro:
mdadm/initrdstart_msg_errblock:
* mdadm/start_daemon: true
* mdadm/mail_to: root
mdadm/initrdstart_msg_errmd:
mdadm/initrdstart_msg_errconf:
* mdadm/autocheck: true
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