cloudstack-users mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Ahmad Emneina <aemne...@gmail.com>
Subject Re: storage issues
Date Fri, 08 Mar 2013 00:36:42 GMT
So the rebooting is part of a process called fencing. Fencing, a safety
mechanism, prevents the hosts from trying to write to a resource thats in a
questionable state. The secondary storage questions will have to be fielded
by someone with some more knowledge.


On Thu, Mar 7, 2013 at 9:31 AM, Valery Ciareszka
<valery.tereshko@gmail.com>wrote:

> Hi all,
>
> I use CS 4.0.1 (1 management node, 1 KVM node, 2 storage nodes that act
> like single nfs server (HA) - have primary and secondary storage there, one
> more NFS server for another secondary storage (having 2 SS in one zone)
> I've faced next issues:
>
> -KVM node tries to reboot when primary storage is offline. I had made wrap
> script on /sbin/reboot and found that reboot is called from kvmheartbeat.sh
> script:
>
> reboot called at Thu Mar 7 11:08:19 EST 2013
> root 9943 0.0 0.0 108164 1528 ? S 11:08 0:00 /bin/bash
> /usr/lib64/cloud/common/scripts/vm/hypervisor/kvm/kvmheartbeat.sh -i
> 10.6.10.1 -p /GIGO/cloud -m /mnt/50127bd7-d195-3f65-83ea-f131c2d5dc73 -c
>
> I tested how VM feels itself upon offlining primary storage - when primary
> storage returns back, everything is ok inside VM.
>
> So I have the question - why KVM node tries to reboot itself ?
>
> Several more questions about secondary storage.
>
> -If I have more than 1 secondary storage configured within one zone, how
> does cloudstack choose on which of them it will  store
> templates/iso/snapshots ?
>
> -I realized that contents of 2 sec storage are different. Imagine we have
> lost contents of  one of the secondary storage permamently. But we have 2
> important templates that were backuped. But they have 100gb+.Is there way
> to put them on new secondary storage without uploading 100GB through
> webmanagement  ?
>
> -Is there way to keep both secondary storages in sync  ?
>
>
> --
> Regards,
> Valery
>
> http://protocol.by/slayer
>

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message