Cedric, Sorry for confusion, these values are from xfs and not zfs as i've incorrectly mentioned in my email. Andrei ----- Original Message ----- From: "Cédric Lemarchand" <c.lemarchand@xxxxxxxxxxx> To: "Andrei Mikhailovsky" <andrei@xxxxxxxxxx> Cc: "Mark Nelson" <mark.nelson@xxxxxxxxxxx>, ceph-users@xxxxxxxxxxxxxx Sent: Wednesday, 26 March, 2014 8:14:56 AM Subject: Re: rbd + qemu osd performance > Le 26 mars 2014 à 00:30, Andrei Mikhailovsky <andrei@xxxxxxxxxx> a écrit : > > The osd fragmentation level of zfs is at 8% at the moment, not sure if this should impact the performance by this much. I will defrag it over night and check tomorrow to see if it makes the difference. Sorry if this is a little bit out of the scope of the thread, but I am very interested to know how you get this value (8% fragmentation) and how you can defragment a cow fs ? Cheers, Cedric _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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