Documentation #11082: Crushmap documentation still references raid4 - Ceph - Ceph

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Documentation #11082

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Crushmap documentation still references raid4

Added by Thomas Johnson about 9 years ago. Updated over 8 years ago.

Status:

Resolved

Priority:

Normal

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Category:

documentation

Target version:

% Done:

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Backport:

Reviewed:

Affected Versions:

v0.94

Pull request ID:

Description

The docs for the Crushmap Rules still reference the legacy RAID-4 implementation.

grep --color -Eir 'raid[ _-]?4' ceph-working-copy doc/rados/operations/crush-map.rst:496:centers for 3-way mirroring, and yet another rule for RAID-4 over six storage doc/rados/operations/crush-map.rst:506: type [ replicated | raid4 ] src/mon/OSDMonitor.cc:3962: * @param pool_type TYPE_ERASURE, TYPE_REP or TYPE_RAID4

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Updated by Aron Gunn over 8 years ago

Checked the "doc/rados/operations/crush-map.rst" file, and it looks like all the RAID 4 references have already been removed.

$ grep -n --color -i raid doc/rados/operations/crush-map.rst
253:As a general rule, an OSD daemon maps to a single storage drive or to a RAID.
531: or a RAID.

But the "src/mon/OSDMonitor.cc" file still does have a reference to RAID-4.

$ grep -n --color -i raid src/mon/OSDMonitor.cc
4363: * @param pool_type TYPE_ERASURE, TYPE_REP or TYPE_RAID4

Removed the "pool_type" option "TYPE_RAID4".

New line: * @param pool_type TYPE_ERASURE, or TYPE_REP

This is now consistent with the current documentation¹.

[1] - http://ceph.com/docs/master/rados/operations/pools/

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