Re: [pve-devel] KVM Live Backup performance

2013-11-21 Thread Dietmar Maurer
> >> Since all of the LVM Snapshot code was removed I am unable to perform > >> the above benchmarks, anyone have a suggestion how we could perform > >> such tests easily? > > Simpyl make a lvm snapshot manually - that is quite easy. > Sure I can make an LVM Snapshot manually (suspend -> snapshot -

[pve-devel] KVM Live Backup performance

2013-11-21 Thread Eric Blevins
On the forum there are a number of people who are complaining about high load averages on the host and/or in the VM being backed up when using the new KVM Live Backup feature. My suspicion is that having the KVM process move the backup data around the performance of the VM is negatively affect

Re: [pve-devel] [PATCH] zfs : add nexenta api for iscsi lun creation

2013-11-21 Thread Alexandre DERUMIER
>>I would prefer to re-add the old code (using ssh keys and password is really >>clumsy). But old code is very slow with a lot of zvols. (ex: listing 300 zvols take around 3min vs 1s). because we need extra api call for each zvol, to retrieve infos (parent,size,...). with ssh, we can list al

Re: [pve-devel] KVM Live Backup performance

2013-11-21 Thread Eric Blevins
You said that you have some VMs which behave badly with new backup? May I ask what you run inside those VMs? Windows 2008 R2 servers running MSSQL Windows 2003 servers running MSSQL and a Java based application I doubt this is a Windows problem, loosing performance of SQL is more noticeable tha

Re: [pve-devel] [PATCH] zfs : add nexenta api for iscsi lun creation

2013-11-21 Thread Alexandre DERUMIER
I'll try to see if I can use ssh key to do authentification to rest-api. seem to be possible with the dbus api (but need nexenta sdk) http://www.ruizs.org/archives/149 so maybe it's possible too with rest api - Mail original - De: "Alexandre DERUMIER" À: "Dietmar Maurer" Cc: pve-d

Re: [pve-devel] KVM Live Backup performance

2013-11-21 Thread Dietmar Maurer
> I would like to perform some benchmarks where CPU/IO/RAM intensive tasks > are run inside the VM while performing a LVM Snapshot backup and then a KVM > Live Backup. Comparing the completion times of the CPU/IO/RAM tasks would > allow us to assess what subsystems are affected, good or bad, by KV

Re: [pve-devel] [PATCH] zfs : add nexenta api for iscsi lun creation

2013-11-21 Thread Michael Rasmussen
Hi Alexandré, On 11-21-2013 09:35, Alexandre DERUMIER wrote: I'll try that today, so wait before applying the patch. I have done more test, the only way to create the lun is through the nexenta rest api. (can't be done with ssh and nmc command). Maybe you could create a bug report with Nexen

Re: [pve-devel] [PATCH] zfs : add nexenta api for iscsi lun creation

2013-11-21 Thread Dietmar Maurer
> I have done more test, the only way to create the lun is through the nexenta > rest > api. > (can't be done with ssh and nmc command). > > So you can apply the patch if you don't have any objection. I would prefer to re-add the old code (using ssh keys and password is really clumsy).

Re: [pve-devel] [PATCH] zfs : add nexenta api for iscsi lun creation

2013-11-21 Thread Alexandre DERUMIER
>>I'll try that today, so wait before applying the patch. I have done more test, the only way to create the lun is through the nexenta rest api. (can't be done with ssh and nmc command). So you can apply the patch if you don't have any objection. - Mail original - De: "Alexandre D