Hello Luca, Thanks for pointing me that out, too bad it's a bit late, since the server is now crashed and only tomorrow I will be able to reset it. Meanwhile, I've got a few questions for you: 1. How do I disable raid autodetect ? 2. Where can I read about device-mapper-multipath ? 3. To deactivate the vg, I suppose I should use vgchange -a n, correct me if I am wrong Thank you for your reply! Gonçalo On 5/28/06, Luca Berra <bluca@comedia.it> wrote:
On Sun, May 28, 2006 at 02:50:24AM +0100, C'est Pierre wrote: >Nevermind about my previous question! I just made my way into this >page: >http://www.redhat.com/docs/manuals/enterprise/RHEL-4-Manual/s390-multi-install-guide/s1-s390info-raid.html >and have setup the multipathing nicely. actually the device-mapper-multipath would a better approach than md-multipath >However, I went into the second node (this is 2 nodes failover cluster >environment) and I noticed that the vg and the md0 appeared there >there automatically! is this normal? is there anything I should do? it is not normal it should not happen if you insist in using md multipath, ensure raid autodetect won't pick it up. i.e. disable damned autodetect on kernel command line or change the partition type to something different than 'Linux Raid' then you'll have to ensure that your distribution init scripts do not automatically start it. best way is omitting this set entries from /etc/mdadm.conf and putting it somewhere else, then invoking "mdadm -Asc /some/where/else/mdadm.conf" in your cluster script if you use device-mapper-multipath (which might also solve the issue in your next post :) there is no problem if multipath finds the devices on the failover node, but you must prevent lvm from activating the vg to do this either add cluster locking or use tags, as explained in the doc/tagging.txt files in the lvm distribution Regards, L. -- Luca Berra -- bluca@comedia.it Communication Media & Services S.r.l. /"\ \ / ASCII RIBBON CAMPAIGN X AGAINST HTML MAIL / \ _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
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