[pve-devel] high load on LV remove and iSCSI

[Alexandre DERUMIER]

Also, I user use multipath,

#multipath -v4 

show if ios are blocked inside multipath layer
(with  queue_if_no_path for example, if no path is available)


----- Mail original ----- 

De: "Stefan Priebe - Profihost AG" <s.priebe at profihost.ag> 
À: "Alexandre DERUMIER" <aderumier at odiso.com> 
Cc: "Dietmar Maurer" <dietmar at proxmox.com>, pve-devel at pve.proxmox.com 
Envoyé: Jeudi 26 Juin 2014 07:54:52 
Objet: Re: [pve-devel] high load on LV remove and iSCSI 


Am 26.06.2014 um 07:44 schrieb Alexandre DERUMIER <aderumier at odiso.com>: 

>>> but Proxmox VE simply run 'lvremove', sow what 'client side' do you talk about? 
> 
> Maybe at the iscsi layer ? maybe multipathing ? 
> 
> Do you have more information about the problem ? 

I would prefer an strace of the hanging lvm process. 


> ----- Mail original ----- 
> 
> De: "Dietmar Maurer" <dietmar at proxmox.com> 
> À: "Alexandre DERUMIER" <aderumier at odiso.com> 
> Cc: pve-devel at pve.proxmox.com 
> Envoyé: Jeudi 26 Juin 2014 06:54:10 
> Objet: RE: [pve-devel] high load on LV remove and iSCSI 
> 
>> Netapp have a good nvram write cache (like on zfs), so write are really fast, I 
>> don't see how a lvm delete could hang. 
>> 
>> 
>> Maybe it's a problem client side ? 
> 
> but Proxmox VE simply run 'lvremove', sow what 'client side' do you talk about? 
> _______________________________________________ 
> pve-devel mailing list 
> pve-devel at pve.proxmox.com 
> http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel