[pve-devel] problems with detect-zeroes

[Alexandre DERUMIER]

Oh, 

in the forum post:

#apt-mark hold pve-qemu-kvm


So, user is using an old version of qemu-kvm without detect-zeroes  support

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

De: "Alexandre DERUMIER" <aderumier at odiso.com> 
À: "Dietmar Maurer" <dietmar at proxmox.com> 
Cc: pve-devel at pve.proxmox.com 
Envoyé: Mardi 28 Octobre 2014 11:18:36 
Objet: Re: [pve-devel] problems with detect-zeroes 

>>id=drive-virtio0,discard=on,aio=native,cache=none,detect-zeroes=unmap 

I think this is because virtio-blk don't support discard 

if discard=on 
detect-zeroes=unmap 
else 
detect-zeroes=on 

I'll retest right now, I'll keep you in touch 


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

De: "Dietmar Maurer" <dietmar at proxmox.com> 
À: "Alexandre DERUMIER (aderumier at odiso.com)" <aderumier at odiso.com> 
Cc: pve-devel at pve.proxmox.com 
Envoyé: Mardi 28 Octobre 2014 10:10:51 
Objet: problems with detect-zeroes 



Hi Alexandre, see: 

http://forum.proxmox.com/threads/20165-After-upgrading-from-3-2-to-3-3-old-pve-qemu-kvm-ceph-vm-doesnt-start 

but you wrote in the commit: 

> No impact if the block driver don't support it yet (like rbd) 

So what is wrong? 
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