Re: [Pacemaker] KVM live migration and multipath

2013-06-27 Thread Dejan Muhamedagic
Hi, On Wed, Jun 26, 2013 at 06:41:29PM +0200, Sven Arnold wrote: > > >>Do you manage the multipath daemon with pacemaker? In my setup multipath > >>is started at boot time and not managed by pacemaker. > > > >Yes. And all multipath records as well. That is the part of my iscsi RA. > > Ah, you ar

Re: [Pacemaker] KVM live migration and multipath

2013-06-26 Thread Sven Arnold
Hi, I did not trigger file system corruptions again. So, at this moment it looks like it is important to: - turn caching off - use native aio - *and* use an up-to-date machine type Failure to meet any of these criteria would result in fs corruption. Does this make sense at all? Later part is

Re: [Pacemaker] KVM live migration and multipath

2013-06-24 Thread Vladislav Bogdanov
22.06.2013 16:37, Sven Arnold wrote: > Hi, > > I am getting closer... Some updates for those who are interested. > Did you turn caching off for your VMs disks? >>> >>> That's a point. Indeed caching was not explicitely turned off and I just >>> noticed that the default setting of the cache a

Re: [Pacemaker] KVM live migration and multipath

2013-06-22 Thread Sven Arnold
Hi, I am getting closer... Some updates for those who are interested. Did you turn caching off for your VMs disks? That's a point. Indeed caching was not explicitely turned off and I just noticed that the default setting of the cache attribute of the device tag in libvirt has changed. [1] I w

Re: [Pacemaker] KVM live migration and multipath

2013-06-21 Thread Vladislav Bogdanov
21.06.2013 17:23, Sven Arnold wrote: > Thank you for replying, Vladislav! > > >> I think the problem should be unrelated to iSCSI, you have correct setup >> (of course I did not thoroughly look through all info, but idea is >> perfectly correct). > > Thank you for confirming. > >> Did you turn

Re: [Pacemaker] KVM live migration and multipath

2013-06-21 Thread Sven Arnold
Thank you for replying, Vladislav! I think the problem should be unrelated to iSCSI, you have correct setup (of course I did not thoroughly look through all info, but idea is perfectly correct). Thank you for confirming. Did you turn caching off for your VMs disks? That's a point. Indeed

Re: [Pacemaker] KVM live migration and multipath

2013-06-19 Thread Vladislav Bogdanov
20.06.2013 02:33, Sven Arnold wrote: > Hi All, > > it asked this on linux-ha but had no luck. Is anybody here who has some > hints for me or could tell me if it is possible (and sensible) to live > migrate a virtual machine if the disk image is provided by a multipath > device? > > I am not sure

[Pacemaker] KVM live migration and multipath

2013-06-19 Thread Sven Arnold
Hi All, it asked this on linux-ha but had no luck. Is anybody here who has some hints for me or could tell me if it is possible (and sensible) to live migrate a virtual machine if the disk image is provided by a multipath device? I am not sure if my approach is flawed or if I am using the wr