[pve-devel] [PATCH] migrate: syncdisk : avoid scanning shared storage

[Alexandre DERUMIER]

Thanks, 
but the main problem was when it's already mounted. (listing vm files by exemple)
Not sure it can help in this case ?

I've done test with iscsi too, I have see a lot of "qemu-img info" process hanging in uninterruptible D state, and pvedaemon hanging.

I'll do more extensive test this week, with nfs and iscsi, to see what problem can occur when storage hang and doesn't timeout.





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

De: "Michael Rasmussen" <mir at datanom.net> 
À: pve-devel at pve.proxmox.com 
Envoyé: Lundi 16 Juillet 2012 18:31:33 
Objet: Re: [pve-devel] [PATCH] migrate: syncdisk : avoid scanning shared storage 

On Mon, 16 Jul 2012 17:45:17 +0200 (CEST) 
Alexandre DERUMIER <aderumier at odiso.com> wrote: 

> 
> Maybe pinging the nfs server, before sending command (ls,rm,...) is the b> 
A suggestion: Try a soft mount first if that succeeds the do a hard 
mount. E.g 

mount -o soft,nfs host:/some/nfs/mount /some/mount/point 
[ $? -eq "0" ] || exit 1 

touch /some/mount/point/.test 
find /some/mount/point -name '.test' 
if [ $? -ne "0" ]; then 
umount -f /some/mount/point 
exit 2 
else 
mount -o nfs host:/some/nfs/mount /some/mount/point 
..... 
fi 

exit 0 

-- 
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Michael Rasmussen 

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