On Mon, 3 Mar 2014, Andrey Korolyov wrote: > Hello, > > On Mon, Mar 3, 2014 at 2:41 PM, Pieter Koorts <pieter@xxxxxxxxxxxx> wrote: > > Hi > > > > Does the disk encryption have a major impact on performance for a busy(ish) > > cluster? > > > > What are the thoughts of having the encryption enabled for all disks by > > default? > > Encryption means stricter requirements to handle a power failure, because > container contents may be lost entirely as easy as regular filesystem may > get corrupt on same event. Therefore enforced sync policy along with the > additional CPU resources consumption and (very possibly) battery for disk > controller requirement describes all the difference. Hi Andrey, You're talking about dm-crypt, right? How does that affect safety? I assumed that it passes IOs directly up and down the stack without reordering or buffering. sage _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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