<tt>rhelv6-list-bounces@redhat.com schrieb am 27.09.2012 09:05:35: > "Roth, Sandro" <Sandro.Roth@zurich-airport.com> </tt> <tt>> Gesendet von: rhelv6-list-bounces@redhat.com > </tt> <tt>> 27.09.2012 09:09</tt> <tt>> > Bitte antworten an > "Red Hat Enterprise Linux 6 $Santiago$ discussion mailing-list" > <rhelv6-list@redhat.com></tt> <tt>> > An</tt> <tt>> > "rhelv6-list@redhat.com" <rhelv6-list@redhat.com></tt> <tt>> > Kopie</tt> <tt>> > Thema</tt> <tt>> > [rhelv6-list] MD devices lost after boot</tt> <tt>> > Hi experts</tt> <tt>> </tt> <tt>> I wasn’t sure where to post this so I’m sending it to this list.</tt> <tt>> </tt> <tt>> We have a setup which uses lvm over md over multipath devices. (at > least that’s the plan)</tt> <tt>> According to this article it is supported in RHEL6 (it wasn’t in RHEL5)</tt> <tt>> </tt><a href=https://access.redhat.com/knowledge/solutions/48634><tt>https://access.redhat.com/knowledge/solutions/48634</tt></a> <tt>> </tt> <tt>> I created my md device as follows</tt> <tt>> # mdadm --create --verbose /dev/md0 --level=1 --raid-devices=2 /dev/ > mapper/mpatha /dev/mapper/mpathb</tt> <tt>> </tt> <tt>> /etc/mdadm.conf has the following content</tt> <tt>> DEVICE /dev/mapper/mpath*</tt> <tt>> ARRAY /dev/md/0 metadata=1.2 UUID=52bd4011:f61badd6:0e63e7bb: > 2448596b name=spch9003.zrh.local:0</tt> <tt>> </tt> <tt>> Then some lvm stuff on /dev/md0. Everything works fine.</tt> <tt>> But after a reboot the md device won’t get assembled automatically.</tt> <tt>> </tt> <tt>> /proc/mdstat shows</tt> <tt>> Personalities :</tt> <tt>> unused devices: <none></tt> <tt>> </tt> <tt>> And therefore nothing gets mounted either, obviously. </tt> <tt>> I have to</tt> <tt>> </tt> <tt>> # mdadm -As</tt> <tt>> mdadm: /dev/md/0 has been started with 2 drives.</tt> <tt>> # vgchange -ay datavg1</tt> <tt>> 1 logical volume(s) in volume group "datavg1" now active</tt> <tt>> # mount /data</tt> <tt>> </tt> <tt>> I’ve done my part of googleing and a lot of people suggest creating > a new initrd when everything is running.</tt> <tt>> So I went…</tt> <tt>> </tt> <tt>> # dracut –f</tt> <tt>> # init 6</tt> <tt>> </tt> <tt>> No change, still won’t get assembled.</tt> <tt>> Any ideas? I’m sure I’m just missing a configuration step..</tt> <tt>> </tt> <tt>> # uname -r; rpm -q mdadm</tt> <tt>> 2.6.32-279.5.1.el6.x86_64</tt> <tt>> mdadm-3.2.3-9.el6.x86_64</tt> <tt>> </tt> <tt>> </tt> <tt>> Any help would be appreciated.</tt> <tt>> </tt> <tt>> </tt> <tt>> Regards</tt> <tt>> </tt> <tt>> > Sandro Roth </tt> <tt>> > Systems Engineer </tt> <tt>> > IT-Operations </tt> <tt>> > Flughafen Zürich AG > Postfach > CH-8058 Zürich-Flughafen </tt> <tt>> > </tt><a href="www.flughafen-zuerich.ch"><tt>www.flughafen-zuerich.ch</tt></a><tt> </tt> <tt>> > </tt> <tt>> > Tel.</tt> <tt>> > +41 (0)43 816 10 58</tt> <tt>> > Mobile</tt> <tt>> > +41 (0)76 356 71 19</tt> <tt>> > Fax</tt> <tt>> > +41 (0)43 816 76 90</tt> <tt>> > </tt> <tt>> </tt> <tt>> > This email message and any attachments are confidential and may be > privileged. If you are not the intended recipient, please notify us > immediately and destroy the original transmittal. You are hereby > notified that any review, copying or distribution of it is strictly > prohibited. Thank you for your cooperation. > > Header information contained in E-mails to and from the company are > monitored for operational reasons in accordance with swiss data > protection act.</tt> <tt>> > _______________________________________________ > rhelv6-list mailing list > rhelv6-list@redhat.com > </tt><a href="https://www.redhat.com/mailman/listinfo/rhelv6-list"><tt>https://www.redhat.com/mailman/listinfo/rhelv6-list</tt></a> Hi Sandro, I was in the same situation, so I create this script: [root@bgstorals01 ~]# cat /etc/init.d/raid-setup #!/bin/bash # # chkconfig: 2345 07 86 # description: Start the raid0 with mdadm # processname: - # pidfile: - # config: /etc/mdadm.conf # source function library . /etc/init.d/functions RETVAL=0 start() { action $"Starting raid arrays via mdadm: " /sbin/mdadm.static --assemble --scan action $"Setting up Logical Volume Management:" /sbin/lvm.static vgchange -a y --ignorelockingfailure for fs in `grep noauto /etc/fstab | awk '{ print $2; }'` #for fs in `grep noauto /etc/fstab | cut -d\ -f1` do action $"Mount filesystem $fs:" /bin/mount $fs done touch /var/lock/subsys/raid-start } stop() { rm -f /var/lock/subsys/raid-start } case "$1" in start) start ;; stop) stop ;; restart|reload) stop start ;; condrestart) if [ -f /var/lock/subsys/raid-start ]; then stop start fi ;; status) status raid-start RETVAL=$? ;; *) echo $"Usage: $0 {start|stop|restart|condrestart|status}" exit 1 esac exit $RETVAL [root@bgstorals01 ~]# and take this script in the adequate runlevel BEFORE S15mdmonitor and S15mdmpd is starting. [root@bgstorals01 ~]# ls -l /etc/rc3.d/ | grep raid lrwxrwxrwx 1 root root 20 May 30 07:39 S07raid-setup -> ../init.d/raid-setup [root@bgstorals01 ~]# ls -l /etc/rc5.d/ | grep raid lrwxrwxrwx 1 root root 20 May 30 07:39 S07raid-setup -> ../init.d/raid-setup [root@bgstorals01 ~]# Mit freundlichen Grüßen Andreas Reschke ________________________________________________________________ Unix/Linux-Administration Andreas.Reschke@behrgroup.com