[moved to ceph-devel] On Thu, 25 Oct 2012, Raghunandhan wrote: > Hi All, > > I have been working around ceph quite a long and trying to stitch zfs with > ceph. I was able to do it to certain extent as follows: > 1. zpool creation > 2. set dedup > 3. create a mountable volume of zfs (zfs create) > 4. format the volume with ext4 and enabling xattr > 5. mkcephfs on the volume > > This actually works and dedup is perfect. But i need to avoid multiple layers > on the storage since the performance is very slow and the kernel timeout > occurs often for a 8GB RAM. I want to test the performance between btrfs and > zfs. I want to avoid the above multiple layering on storage and make the ceph > cluster aware of zfs. Let me know if anyone has workaround this.
I'm not familiar enough with zfs to know what 'mountable volume' means.. is that a block device/lun that you're putting ext4 on? Probably the best results will come from creating a zfs *file system* (using the ZPL or whatever it is) and running ceph-osd on top of that. There is at least one open bug from someone having problems there, but we'd very much like to sort out the problem. sage -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
