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Re: Low performance of data transfer over cifs mounts Sorry, i reversed the figures for scp, correct ones: with 2 Cores : 4MB/s with 1 Core : 70MB/s The problems disappears on a 32bit Ubuntu 12.10 guest (but guest kernel is much more recent, of course) rob

Re: Low performance of data transfer over cifs mounts no, I have verified this also via scp, transfer rate passes from 70MB/s to 4MB/s. I opened also a Ticket for this issue. rob

Re: Low performance of data transfer over cifs mounts tried with scp; with 2 Cores : 70MB/s with 1 Core : 4MB/s rob

Low performance of data transfer over cifs mounts We have upgraded one of our cluster nodes to 2.2. We noted that performance of data transfer over smb mounts is severely impacted on machines configured with more than one sockets/cores configured. With 2 cores we have max 1.5 MB/s, with 1...

Done: https://bugzilla.proxmox.com/show_bug.cgi?id=260 rob

Hello, I noted that all three nodes in our 2.1 cluster are in red when I switch to "Storage view". The most part of storages are configured as LVM on SAN disks. The Volumes were created under pve 1.9; may be some LV tags are missing? The cluster seems to work very well anyway; just curious bye

I would stress that using a VM as BackupPC host could be a viable oction, if you take away NFS. The easiest way is to provide a physical dedicated disk directly to the vm for the pool filesystem. rob

Thanks! I think that a VM as BackupPC host should work, but it is a suboptimal choice; check the network load on PVE during backups using iftop or similar; Bear in mind that access to the pool filesystem should be as quick as possible. Finally, i don't know if hardlinking (base of BackuPC...

Sorry I didn't realize you referred to e100 post, not mine. rob

I have published the scripts, under GPL v3.0 License: http://pve.proxmox.com/wiki/File_System_level_backups_with_LVM_snapshots#Backuppc-snap_download_page Very interesting. bye, rob

Here: http://pve.proxmox.com/wiki/File_System_level_backups_with_LVM_snapshots I am starting to put some notes; I do not use rsnapshot, but I think the concept is very similar and you can easily adapt the scripts. rob

No, snapshots are taken from the host, acting inside the ssh/rsync redirection script; a Sync on traget disk is done before sapshotting, and optionally a set of task (stop/start of services, dump or lock databases ...) is executed, immediately before and after snapshot creation. Snapshot...

At the moment we are using backuppc for all but few vm in two clusters, fifty machines or so in total. We preferred to have two physical backuppc host; all hosts are configured in the usual way on backuppc. If an host is a vm, the rsync backup command is redirected on vm using an ssh "forced...

We are using a similar solution, but contacting directly the hosts and redirecting rsync on the snapshots on pve. We use to save also ntfs metadata for windows vm in case of bare metal restore. We are thinking to publish the scripts soon, if you are interested i can notfy here when is...

Update: it was a firmware issue: http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&objectID=c02473928&prodTypeId=329290&prodSeriesId=4085948 In short: the interconnection module (passthrough) between the blade host and the switch was not passing the state of the link...

It seems that bonding with arp monitoring inside a bridge has known issues; see http://www.linux-kvm.org/page/HOWTO_BONDING (bottom of the page: Problem with bridge + bonding) And, moreover: "[PATCH] bonding: fix arp_validate on bonds inside a bridge"[1] May be this patch is not yet in pve...

Yes, we are at this level, no difference. Anyway, I have tried removing arp_validate 3 parameter from bonding configuration, and now the bond interface stays up even inside the bridge. Failover works. if i set that parameter to 1 or 2 the slave interfaces start oscillating between up and down...

Hello, We are starting migrating our 1.9 cluster to 2.1, but there are problems in setting up bonding on two Emulex NC355i 10Gb ethernet interfaces (be2net driver), onboard on HP Blade BL460c G7. The two interfaces are connected to two different switches, with a trunk connecting them. First...

More ore less same problem here; seems solved after upgrading guest lenny kernel with 2.6.32-bpo.5-amd64 from lenny-backports. bye, rob

More or less the same here: ==== ... Sep 8 18:42:17 lxdmz4 kernel: BUG: unable to handle kernel NULL pointer dereference at 0000000000000128 Sep 8 18:42:17 lxdmz4 kernel: IP: [<ffffffffa02974d4>] kvm_set_irq+0x65/0x109 [kvm] Sep 8 18:42:17 lxdmz4 kernel: PGD 602b8d067 PUD 602150067 PMD 0...