On Thu, 2014-01-09 at 09:30 +0100, squadra wrote: > try it, i bet that you will get better latency results with proper > configured iscsitarget/initiator. > > > btw, freebsd 10 includes kernel based iscsi-target now. which works > pretty good for me since some time, easy to setup and working > performing well (zfs not to forget ;) )
Yeah I see 10´s reached RC4 now, probably´ll be out for real soon, and then a while more to wait for 10.1 to have longer support:) Have you compared the new iscsi-target with "ports/istgt" btw? /K > > > On Thu, Jan 9, 2014 at 9:20 AM, Markus Stockhausen > <stockhau...@collogia.de> wrote: > > Von: Karli Sjöberg [karli.sjob...@slu.se] > > Gesendet: Donnerstag, 9. Januar 2014 08:48 > > An: squa...@gmail.com > > Cc: users@ovirt.org; Markus Stockhausen > > Betreff: Re: [Users] Experience with low cost NFS-Storage as > VM-Storage? > > > > > On Thu, 2014-01-09 at 08:35 +0100, squadra wrote: > > Right, try multipathing with nfs :) > > > > Yes, that´s what I meant, maybe could have been more clear > about that, > > sorry. Multipathing (and the load-balancing it brings) is > what really > > separates iSCSI from NFS. > > > > What I´d be interested in knowing is at what breaking-point, > not having > > multipathing becomes an issue. I mean, we might not have > such a big > > VM-park, about 300-400 VMs. But so far running without > multipathing > > using good ole' NFS and no performance issues this far. > Would be good to > > know beforehand if we´re headed for a wall of some sorts, > and about > > "when" we´ll hit it... > > > >/K > > > If that is really a concern for the initial question about a > "low cost NFS > solution" LACP on the NFS filer side will mitigate the > bottleneck from > too many hypervisors. > > My personal headache is the I/O performance of QEMU. More > details here: > > http://lists.nongnu.org/archive/html/qemu-discuss/2013-12/msg00028.html > Or to make it short: Each I/O in a VM gets a penalty of 370us. > That is much > more than in ESX environments. > > I would be interested if this the same in ISCSI setups. > > Markus > > > > > -- > Sent from the Delta quadrant using Borg technology! _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
