Re: [ceph-users] HW failure cause client IO drops

2019-04-16 Thread Darius Kasparavičius
Hello, Are you using a BBU backed raid controller? It sounds more like your write cache is acting up if you are using one. Can you check what your raid controller is showing? I have sometimes seen raid controllers performing consistency checks or patrol read on single drive raid0. You can disable

Re: [ceph-users] HW failure cause client IO drops

2019-04-16 Thread Wido den Hollander
On 4/16/19 2:27 PM, M Ranga Swami Reddy wrote: > Its Smart Storage battery, which was disabled due to high ambient > temperature. > All OSD processes/daemon working as is...but those OSDs not responding > to other OSD due to high CPU utilization.. > Don't observe the clock skew issue. > As the

Re: [ceph-users] HW failure cause client IO drops

2019-04-16 Thread M Ranga Swami Reddy
Its Smart Storage battery, which was disabled due to high ambient temperature. All OSD processes/daemon working as is...but those OSDs not responding to other OSD due to high CPU utilization.. Don't observe the clock skew issue. On Tue, Apr 16, 2019 at 12:49 PM Marco Gaiarin wrote: > Mandi! M Ra

Re: [ceph-users] HW failure cause client IO drops

2019-04-16 Thread Marco Gaiarin
Mandi! M Ranga Swami Reddy In chel di` si favelave... > Hello - Recevenlt we had an issue with storage node's battery failure, which > cause ceph client IO dropped to '0' bytes. Means ceph cluster couldn't perform > IO operations on the cluster till the node takes out. This is not expected > fr