[PVE-User] Proxmox Ceph with differents HDD Size

Gilberto Nunes gilberto.nunes32 at gmail.com
Fri Aug 31 16:08:33 CEST 2018


Thanks for all buddies that replied my messages.
Indeed I used

ceph osd primary-affinity <osd-id> <weight>

And we felt some performance increment.

What's help here is that we have 6 proxmox ceph server:

ceph01 - HDD with 5 900 rpm
ceph02 - HDD with 7 200 rpm
ceph03 - HDD with 7 200 rpm
ceph04 - HDD with 7 200 rpm
ceph05 - HDD with 5 900 rpm
ceph06 - HDD with 5 900 rpm

So what I do is define weight 0 to HDD's with 5 900 rpm and define weight 1
to HDD's with 7 200 rpm.

ID  CLASS WEIGHT   TYPE NAME           STATUS REWEIGHT PRI-AFF
 -1       62.31059 root default
 -3       14.55438     host pve-ceph01
  0   hdd  3.63860         osd.0           up  1.00000       0
  1   hdd  3.63860         osd.1           up  1.00000       0
  2   hdd  3.63860         osd.2           up  1.00000       0
  3   hdd  3.63860         osd.3           up  1.00000       0
 -5       10.91559     host pve-ceph02
  4   hdd  2.72890         osd.4           up  1.00000 1.00000
  5   hdd  2.72890         osd.5           up  1.00000 1.00000
  6   hdd  2.72890         osd.6           up  1.00000 1.00000
  7   hdd  2.72890         osd.7           up  1.00000 1.00000
 -7        7.27708     host pve-ceph03
  8   hdd  2.72890         osd.8           up  1.00000 1.00000
  9   hdd  2.72890         osd.9           up  1.00000 1.00000
 10   hdd  1.81929         osd.10          up  1.00000 1.00000
 -9        7.27716     host pve-ceph04
 11   hdd  1.81929         osd.11          up  1.00000 1.00000
 12   hdd  1.81929         osd.12          up  1.00000 1.00000
 13   hdd  1.81929         osd.13          up  1.00000 1.00000
 14   hdd  1.81929         osd.14          up  1.00000 1.00000
-11       14.55460     host pve-ceph05
 15   hdd  7.27730         osd.15          up  1.00000       0
 16   hdd  7.27730         osd.16          up  1.00000       0
-13        7.73178     host pve-ceph06
 17   hdd  0.90959         osd.17          up  1.00000       0
 18   hdd  2.72890         osd.18          up  1.00000       0
 19   hdd  1.36440         osd.19          up  1.00000       0
 20   hdd  2.72890         osd.20          up  1.00000       0

Tha's it! Thanks again.


---
Gilberto Nunes Ferreira

(47) 3025-5907
(47) 99676-7530 - Whatsapp / Telegram

Skype: gilberto.nunes36




2018-08-30 11:47 GMT-03:00 Phil Schwarz <infolist at schwarz-fr.net>:

> Hope you did change a single disk at a time !
>
> Be warned (if not) that moving an OSD from a server to another triggers
> a rebalancing of almost the complete datas stored upon in order to
> follow crushmap.
>
> For instance exchanging two OSDs between servers result in a complete
> rebalance of the two OSDS,a ccording to my knowledge.
>
> 16% of misplaced datas could be acceptable or not depending on your
> needs of redundancy and throughput, but it's not a low value that could
> be underestimated.
>
> Best regards
>
>
>
> Le 30/08/2018 à 15:27, Gilberto Nunes a écrit :
> > Right now the ceph are very slow
> >
> > 343510/2089155 objects misplaced (16.443%)
> > Status
> >
> > HEALTH_WARN
> > Monitors
> > pve-ceph01:
> > pve-ceph02:
> > pve-ceph03:
> > pve-ceph04:
> > pve-ceph05:
> > pve-ceph06:
> > OSDs
> > In Out
> > Up 21 0
> > Down 0 0
> > Total: 21
> > PGs
> > active+clean:
> > 157
> >
> > active+recovery_wait+remapped:
> > 1
> >
> > active+remapped+backfill_wait:
> > 82
> >
> > active+remapped+backfilling:
> > 2
> >
> > active+undersized+degraded+remapped+backfill_wait:
> > 8
> >
> > Usage
> > 7.68 TiB of 62.31 TiB
> > Reads:
> > Writes:
> > IOPS: Reads:
> > IOPS: Writes:
> > <http://www.proxmox.com/products/proxmox-ve/subscription-service-plans>
> > ()
> > Degraded data redundancy: 21495/2089170 objects degraded (1.029%), 8 pgs
> > degraded, 8 pgs undersized
> >
> > pg 21.0 is stuck undersized for 63693.346103, current state
> > active+undersized+degraded+remapped+backfill_wait, last acting [2,9]
> > pg 21.2 is stuck undersized for 63693.346973, current state
> > active+undersized+degraded+remapped+backfill_wait, last acting [2,10]
> > pg 21.6f is stuck undersized for 62453.277248, current state
> > active+undersized+degraded+remapped+backfill_wait, last acting [2,5]
> > pg 21.8b is stuck undersized for 63693.361835, current state
> > active+undersized+degraded+remapped+backfill_wait, last acting [2,8]
> > pg 21.c3 is stuck undersized for 63693.321337, current state
> > active+undersized+degraded+remapped+backfill_wait, last acting [2,9]
> > pg 21.c5 is stuck undersized for 66587.797684, current state
> > active+undersized+degraded+remapped+backfill_wait, last acting [2,8]
> > pg 21.d4 is stuck undersized for 62453.047415, current state
> > active+undersized+degraded+remapped+backfill_wait, last acting [2,6]
> > pg 21.e1 is stuck undersized for 62453.276631, current state
> > active+undersized+degraded+remapped+backfill_wait, last acting [2,5]
> >
> >
> >
> >
> > ---
> > Gilberto Nunes Ferreira
> >
> > (47) 3025-5907
> > (47) 99676-7530 - Whatsapp / Telegram
> >
> > Skype: gilberto.nunes36
> >
> >
> >
> >
> > 2018-08-30 10:23 GMT-03:00 Gilberto Nunes <gilberto.nunes32 at gmail.com>:
> >
> >> SO, what you guys think about this HDD distribuiton?
> >>
> >> CEPH-01
> >> 1x 3 TB
> >> 1x 2 TB
> >>
> >> CEPH-02
> >> 1x 4 TB
> >> 1x 3 TB
> >>
> >> CEPH-03
> >> 1x 4 TB
> >> 1x 3 TB
> >>
> >> CEPH-04
> >> 1x 4 TB
> >> 1x 3 TB
> >> 1x 2 TB
> >>
> >> CEPH-05
> >> 1x 8 TB
> >> 1x 2 TB
> >>
> >> CEPH-06
> >> 1x 3 TB
> >> 1x 1 TB
> >> 1x 8 TB
> >>
> >>
> >> ---
> >> Gilberto Nunes Ferreira
> >>
> >> (47) 3025-5907
> >> (47) 99676-7530 - Whatsapp / Telegram
> >>
> >> Skype: gilberto.nunes36
> >>
> >>
>


More information about the pve-user mailing list