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ceph: nautilus followup

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Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
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Thomas Lamprecht 2019-06-11 15:42:27 +02:00
parent 9bddef40d0
commit 352c803f9e
2 changed files with 13 additions and 14 deletions
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pve-faq.adoc
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@ -86,6 +86,7 @@ recommended.
[width="100%",cols="5*d",options="header"] [width="100%",cols="5*d",options="header"]
|=========================================================== |===========================================================
| {pve} Version | Debian Version | First Release | Debian EOL | Proxmox EOL | {pve} Version | Debian Version | First Release | Debian EOL | Proxmox EOL
| {pve} 6.x | Debian 10 (Buster)| tba | tba | tba
| {pve} 5.x | Debian 9 (Stretch)| 2017-07 | tba | tba | {pve} 5.x | Debian 9 (Stretch)| 2017-07 | tba | tba
| {pve} 4.x | Debian 8 (Jessie) | 2015-10 | 2018-06 | 2018-06 | {pve} 4.x | Debian 8 (Jessie) | 2015-10 | 2018-06 | 2018-06
| {pve} 3.x | Debian 7 (Wheezy) | 2013-05 | 2016-04 | 2017-02 | {pve} 3.x | Debian 7 (Wheezy) | 2013-05 | 2016-04 | 2017-02

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pveceph.adoc
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@ -115,10 +115,10 @@ failure event during recovery.
In general SSDs will provide more IOPs than spinning disks. This fact and the In general SSDs will provide more IOPs than spinning disks. This fact and the
higher cost may make a xref:pve_ceph_device_classes[class based] separation of higher cost may make a xref:pve_ceph_device_classes[class based] separation of
pools appealing. Another possibility to speedup OSDs is to use a faster disk pools appealing. Another possibility to speedup OSDs is to use a faster disk
as journal or DB/WAL device, see xref:pve_ceph_osds[creating Ceph OSDs]. If a as journal or DB/**W**rite-**A**head-**L**og device, see
faster disk is used for multiple OSDs, a proper balance between OSD and WAL / xref:pve_ceph_osds[creating Ceph OSDs]. If a faster disk is used for multiple
DB (or journal) disk must be selected, otherwise the faster disk becomes the OSDs, a proper balance between OSD and WAL / DB (or journal) disk must be
bottleneck for all linked OSDs. selected, otherwise the faster disk becomes the bottleneck for all linked OSDs.
Aside from the disk type, Ceph best performs with an even sized and distributed Aside from the disk type, Ceph best performs with an even sized and distributed
amount of disks per node. For example, 4 x 500 GB disks with in each node is amount of disks per node. For example, 4 x 500 GB disks with in each node is
@ -334,10 +334,11 @@ You can directly choose the size for those with the '-db_size' and '-wal_size'
paremeters respectively. If they are not given the following values (in order) paremeters respectively. If they are not given the following values (in order)
will be used: will be used:
* bluestore_block_{db,wal}_size in ceph config database section 'osd' * bluestore_block_{db,wal}_size from ceph configuration...
* bluestore_block_{db,wal}_size in ceph config database section 'global' ** ... database, section 'osd'
* bluestore_block_{db,wal}_size in ceph config section 'osd' ** ... database, section 'global'
* bluestore_block_{db,wal}_size in ceph config section 'global' ** ... file, section 'osd'
** ... file, section 'global'
* 10% (DB)/1% (WAL) of OSD size * 10% (DB)/1% (WAL) of OSD size
NOTE: The DB stores BlueStore’s internal metadata and the WAL is BlueStore’s NOTE: The DB stores BlueStore’s internal metadata and the WAL is BlueStore’s
@ -348,13 +349,10 @@ NVRAM for better performance.
Ceph Filestore Ceph Filestore
~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~
Until Ceph Luminous, Filestore was used as storage type for Ceph OSDs. It can Before Ceph Luminous, Filestore was used as default storage type for Ceph OSDs.
still be used and might give better performance in small setups, when backed by
an NVMe SSD or similar.
Starting with Ceph Nautilus, {pve} does not support creating such OSDs with Starting with Ceph Nautilus, {pve} does not support creating such OSDs with
pveceph anymore. If you still want to create filestore OSDs, use 'ceph-volume' 'pveceph' anymore. If you still want to create filestore OSDs, use
directly. 'ceph-volume' directly.
[source,bash] [source,bash]
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