[ceph-users] kernel RBD where is /dev/rbd?

2016-07-23 Thread Nathanial Byrnes
Hi All, I'm working with a debian 8.5 new install and I'm trying to, without installing any additional software, mount an RBD image on my cluster using the kernel module. When I run: /bin/echo 10.88.28.23 name=admin,secret= xcp-vol-pool1 proxy-img1 > /sys/bus/rbd/add I see the following

Re: [ceph-users] kernel RBD where is /dev/rbd?

2016-07-23 Thread Ruben Kerkhof
On Sat, Jul 23, 2016 at 3:58 PM, Nathanial Byrnes wrote: > Hi All, > I'm working with a debian 8.5 new install and I'm trying to, without > installing any additional software, mount an RBD image on my cluster using > the kernel module. When I run: > > /bin/echo 10.88.28.23 name=admin,secret= x

Re: [ceph-users] kernel RBD where is /dev/rbd?

2016-07-23 Thread Nathanial Byrnes
I found it. I'm not sure how the block device was created, but, I had the wrong image format. I thought that image format 2 was in 3.11+, and debian 8.5 is 3.16 ... but I attached to an image-format 1 image and /dev/rbd0 magically appeared... Best Regards, Nate On 07/23/2016 10:15 A

Re: [ceph-users] kernel RBD where is /dev/rbd?

2016-07-23 Thread Ilya Dryomov
On Sat, Jul 23, 2016 at 4:39 PM, Nathanial Byrnes wrote: > I found it. I'm not sure how the block device was created, but, I had the > wrong image format. I thought that image format 2 was in 3.11+, and debian > 8.5 is 3.16 ... but I attached to an image-format 1 image and /dev/rbd0 > magically a

Re: [ceph-users] Recovery stuck after adjusting to recent tunables

2016-07-23 Thread Goncalo Borges
Hi Kostis This is a wild guess but one thing I note is that your pool 179 has a very low pg number (100). Maybe the algorithm behind the new tunable need a higher pg number to actually proceed with the recovery? You could try to increase the pgs to 128 (it is always better to use powers of 2

Re: [ceph-users] pgs stuck unclean after reweight

2016-07-23 Thread Goncalo Borges
Hi Christian Thanks for the tips. We do have monitoring in place but we are currently on a peak and the occupancy increased tremendously in a couple of days time. I solved the problem of the stucked pgs by reweight (decreasing weights) of the new osds which were preventing the backfilling. Once