On Tue, Apr 4, 2017 at 12:28 PM, Patrick Donnelly <pdonnell@xxxxxxxxxx> wrote: > On Sat, Apr 1, 2017 at 4:58 PM, Willem Jan Withagen <wjw@xxxxxxxxxxx> wrote: >> On 1-4-2017 21:59, Wido den Hollander wrote: >>> >>>> Op 31 maart 2017 om 19:15 schreef Willem Jan Withagen <wjw@xxxxxxxxxxx>: >>>> >>>> >>>> On 31-3-2017 17:32, Wido den Hollander wrote: >>>>> Hi Willem Jan, >>>>> >>>>>> Op 30 maart 2017 om 13:56 schreef Willem Jan Withagen >>>>>> <wjw@xxxxxxxxxxx>: >>>>>> >>>>>> >>>>>> Hi, >>>>>> >>>>>> I'm pleased to announce that my efforts to port to FreeBSD have >>>>>> resulted in a ceph-devel port commit in the ports tree. >>>>>> >>>>>> https://www.freshports.org/net/ceph-devel/ >>>>>> >>>>> >>>>> Awesome work! I don't touch FreeBSD that much, but I can imagine that >>>>> people want this. >>>>> >>>>> Out of curiosity, does this run on ZFS under FreeBSD? Or what >>>>> Filesystem would you use behind FileStore with this? Or does >>>>> BlueStore work? >>>> >>>> Since I'm a huge ZFS fan, that is what I run it on. >>> >>> Cool! The ZIL, ARC and L2ARC can actually make that very fast. Interesting! >> >> Right, ZIL is magic, and more or equal to the journal now used with OSDs >> for exactly the same reason. Sad thing is that a write is now 3* >> journaled: 1* by Ceph, and 2* by ZFS. Which means that the used >> bandwidth to the SSDs is double of what it could be. >> >> Had some discussion about this, but disabling the Ceph journal is not >> just setting an option. Although I would like to test performance of an >> OSD with just the ZFS journal. But I expect that the OSD journal is >> rather firmly integrated. > > Disabling the OSD journal will never be viable. The journal is also > necessary for transactions and batch updates which cannot be done > atomically in FileStore. > > This is great work Willem. I'm especially looking forward to seeing > BlueStore performance on a ZVol. > > -- > Patrick Donnelly > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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