>>> Jake Young <jak3kaj@xxxxxxxxx> schrieb am Donnerstag, 30. Juni 2016 um 00:28: > On Wednesday, June 29, 2016, Mike Jacobacci <mikej@xxxxxxxxxx> wrote: > Hi, >> Hi all, >> >> Is there anyone using rbd for xenserver vm storage? I have XenServer 7 >> and the latest Ceph, I am looking for the the best way to mount the rbd >> volume under XenServer. There is not much recent info out there I have >> found except for this: >> >> > http://www.mad-hacking.net/documentation/linux/ha-cluster/storage-area-networ > k/ceph-xen-domu.xml >> >> and this plugin (which looks nice): >> https://github.com/mstarikov/rbdsr >> >> I am looking for a way that doesn*t involve too much command line so other >> admins that don*t know Ceph or XenServer very well can work with it. I am >> just curious what others are doing* Any help is greatly appreciated! >> >> Cheers, >> Mike >> > > I'm not a XenServer user, so I can't help you there; but I feel your pain > using Ceph for VMware storage. > > I'm surprised that any major Linux distributions haven't considered > enabling rbd modules in initrd. > It seems also to be of topic in this list. One's asking for this feature in a ceph course I was asked, why one should do this. The only answer is: Having a storage device of any kind, you want to boot from it (I think). And it avoids additional layers like rbd via iSCSI. We are using rbd's as system disks on our KVM hosts configured with dracut on Gentoo (is that major?). It works well with only one beauty mistake. Exactly 2 hours after boot we run in this issue: http://tracker.ceph.com/issues/4282 It's interesting to see that the VM rbd's are running well while the system disk is blocked for exactly one hour. Seems like this has something to do with timing during boot without respecting time zones. Can anyone share experiences with booting from rbd? > I can see having a tiny OS image containing not much more than grub and the > boot kernel. The trick would be to find a way to manage the boot string in > the grub conf on a large scale. > > Jake Steffen -- Klinik-Service Neubrandenburg GmbH Allendestr. 30, 17036 Neubrandenburg Amtsgericht Neubrandenburg, HRB 2457 Geschaeftsfuehrerin: Gudrun Kappich _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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