Ceph reset perf counter
OSD performance counters tend to stack up and sometimes the value shown is not really representative of the current environment. Thus it is quite useful to reset the counters to get the last values. …
Read more →Fix nova-scheduler issue with RBD and UUID not found
While playing with Ceph on DevStack I noticed that after several rebuild I ended up with the following error from nova-scheduler: Secret not found: rbd no secret matches uuid …
Read more →2014 retrospective
I am a little bit late for this retrospective but holiday season was full of good things and I was really disconnected. I spent 2 amazing weeks in South Africa with my girlfriend, see post picture …
Read more →OpenStack configure VM migrate nova SSH
Just a reminder for me :D.
Read more →Ceph: collect Kernel RBD logs
Quick tip to collect Kernel RBD logs.
Read more →Ceph: Cache Tier Statistics
Quick tip on how to retrieve cache statistics from the a cache pool.
Read more →DevStack and remote Ceph cluster
Introducing the ability to connect DevStack to a remote Ceph cluster. So DevStack won’t bootstrap any Ceph cluster, it will simply connect to a remote one.
Read more →OpenStack: import existing Ceph volumes in Cinder
This method can be useful while migrating from one OpenStack to another.
Read more →Ceph: recover OSDs after SSD journal failure
A common recommendation is to store OSD journal on a SSD drive which implies loosing your OSD if this journal fails. This article assumes that your OSDs have been originally deployed with ceph-disk. …
Read more →OpenStack Glance: import images and convert them directly in Ceph
Ceph, to work in optimal circumstances requires the usage of RAW images. However, it is painful to upload RAW images in Glance because it takes a while. Let see how we can make our life easier.
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