[Bug 1624591] Re: ceph charms should use the CFQ IO scheduler so scrubbing can be de-prioritized
Launchpad Bug Tracker
1624591 at bugs.launchpad.net
Thu Apr 6 08:17:59 UTC 2017
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: ceph (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1624591
Title:
ceph charms should use the CFQ IO scheduler so scrubbing can be de-
prioritized
Status in OpenStack ceph charm:
Triaged
Status in OpenStack ceph-osd charm:
Triaged
Status in ceph package in Ubuntu:
Confirmed
Status in ceph package in Juju Charms Collection:
Invalid
Status in ceph-osd package in Juju Charms Collection:
Invalid
Bug description:
Since firefly Ceph can set the IO priority and class for scrub
traffic; this would help immensely on busy Ceph clusters. It does
require using the CFQ scheduler for OSDs but this should be fine since
OSDs are (generally) the only user of that device.
More information here: http://dachary.org/?p=3268
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