[Bug 1624591] Re: ceph charms should use the CFQ IO scheduler so scrubbing can be de-prioritized
James Page
james.page at ubuntu.com
Thu Feb 23 18:38:11 UTC 2017
** Changed in: charm-ceph
Importance: Undecided => Medium
** Changed in: charm-ceph
Status: New => Triaged
** Changed in: charm-ceph
Assignee: (unassigned) => Chris MacNaughton (chris.macnaughton)
** Changed in: ceph (Juju Charms Collection)
Status: Triaged => Invalid
** Changed in: charm-ceph-osd
Importance: Undecided => Medium
** Changed in: charm-ceph-osd
Status: New => Triaged
** Changed in: charm-ceph-osd
Assignee: (unassigned) => Chris MacNaughton (chris.macnaughton)
** Changed in: ceph-osd (Juju Charms Collection)
Status: Triaged => Invalid
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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:
New
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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