Actually my intent is to use EC with RGW pools :). If I fiddle around with
cap bits temporarily will I be able to get things to work, or will
protocol issues / CRUSH map parsing get me into trouble?
Is there an idea of when this might work in general? Even if the kernel
doesn't support EC pools directly, but would work in a cluster with EC
pools in use?
Thanks,
-mike
On Wed, 9 Apr 2014, Gregory Farnum wrote:
This flag won't be listed as required if you don't have any erasure
coding parameters in your OSD/crush maps. So if you aren't using it,
you should remove the EC rules and the kernel should be happy.
-Greg
Software Engineer #42 @ http://inktank.com | http://ceph.com
On Tue, Apr 8, 2014 at 6:08 PM, Aaron Ten Clay <aaro...@aarontc.com> wrote:
On Tue, Apr 8, 2014 at 4:50 PM, Michael Nelson <mn+ceph-us...@tnld.net>
wrote:
I am trying to mount CephFS from a freshly installed v0.79 cluster using a
kernel built from git.kernel.org:kernel/git/sage/ceph-client.git (for-linus
a30be7cb) and running into the following dmesg errors on mount:
libceph: mon0 198.18.32.12:6789 feature set mismatch, my 2b84a042aca <
server's 2f84a042aca, missing 4000000000
libceph: mon0 198.18.32.12:6789 socket error on read
which maps to:
ceph_features.h:#define CEPH_FEATURE_OSD_ERASURE_CODES (1ULL<<38)
ceph_features.h:#define CEPH_FEATURE_OSD_TMAP2OMAP (1ULL<<38) /* overlap
with EC */
The same issue happens on the official 3.14 kernel.
According to the documentation, this is only supported by 3.15:
http://ceph.com/docs/master/rados/operations/crush-map/#which-client-versions-support-crush-tunables3
I don't know what kernel patches implement support for this, but you can
work around the problem by using the FUSE client until patches are released.
_______________________________________________
ceph-users mailing list
ceph-users@lists.ceph.com
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
_______________________________________________
ceph-users mailing list
ceph-users@lists.ceph.com
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
