Re: DriveGroup Spec question

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Hi,

Am 8/7/25 um 16:18 schrieb Robert Sander:

sdm                                                                                                     8:192  0   18T  0 disk
├─ceph--846e1a59--aff6--4ef8--9b71--de7241531677-osd--block--026e8cef--123d--47d9--9b30--211f94edf96c 252:16   0 17.9T  0 lvm
└─ceph--846e1a59--aff6--4ef8--9b71--de7241531677-osd--db--88c47d0b--f5c6--4cec--8909--c5f8036ca459    252:17   0  100G  0 lvm

The same happens when I remove an existing OSD with

ceph orch osd rm 34 --zap

and let the orchestrator recreate it immediately.

# ceph osd df tree $(hostname)
ID  CLASS  WEIGHT     REWEIGHT  SIZE     RAW USE  DATA     OMAP    META     AVAIL    %USE  VAR   PGS  STATUS  TYPE NAME
-5         108.48843         -  108 TiB  601 GiB  950 MiB  17 KiB  840 MiB  108 TiB  0.54  1.00    -                  host $(hostname)
 0    hdd   18.09769   1.00000   18 TiB  100 GiB  158 MiB   1 KiB  241 MiB   18 TiB  0.54  1.00   46      up              osd.0
 8    hdd   18.09769   1.00000   18 TiB  100 GiB  158 MiB   1 KiB  246 MiB   18 TiB  0.54  1.00   49      up              osd.8
16    hdd   18.09769   1.00000   18 TiB  100 GiB  158 MiB   4 KiB   45 MiB   18 TiB  0.54  1.00   41      up              osd.16
21    hdd   18.09769   1.00000   18 TiB  100 GiB  158 MiB   5 KiB   46 MiB   18 TiB  0.54  1.00   41      up              osd.21
27    hdd   18.09769   1.00000   18 TiB  100 GiB  158 MiB   5 KiB   46 MiB   18 TiB  0.54  1.00   46      up              osd.27
34    hdd   18.00000   1.00000   18 TiB  100 GiB  158 MiB   1 KiB  216 MiB   18 TiB  0.54  1.00   51      up              osd.34
                         TOTAL  108 TiB  601 GiB  950 MiB  21 KiB  840 MiB  108 TiB  0.54
MIN/MAX VAR: 1.00/1.00  STDDEV: 0.00

No I have a new OSD on the existing 18TB HDD which is smaller
because a 100G DB volume has been created on it.

And the SSD now has 100G more space:

# pvs
  PV         VG                                        Fmt  Attr PSize    PFree
  /dev/sda3  system                                    lvm2 a--   <56.95g       0
  /dev/sdb   ceph-70008fd1-08b8-4cbc-b8eb-6c5d7168147f lvm2 a--  <605.00g <405.00g
  /dev/sdc   ceph-46b31f42-bd39-48c7-a855-6ca7e722ffe2 lvm2 a--  <605.00g <305.00g
  /dev/sdf   ceph-dc6876b6-ec6b-4486-bf94-f11fe5c6151b lvm2 a--   <18.00t       0
  /dev/sdg   ceph-3e9d0706-14b9-4344-be98-8d3ba157887b lvm2 a--   <18.00t       0
  /dev/sdh   ceph-cc6094f5-cd8a-47d9-ab94-d5cc45321cc7 lvm2 a--   <18.00t       0
  /dev/sdi   ceph-74101368-5145-44c0-8b72-b90160633ac4 lvm2 a--   <18.00t       0
  /dev/sdj   ceph-aa6188ef-630a-4471-bdd9-71f0ab3228de lvm2 a--   <18.00t       0
  /dev/sdk   ceph-c5359b20-222a-42eb-924f-3c776d5cd913 lvm2 a--   <18.00t       0
  /dev/sdm   ceph-846e1a59-aff6-4ef8-9b71-de7241531677 lvm2 a--   <18.00t       0

# lvs
  LV                                             VG                                        Attr       LSize
  osd-block-1b8e2d04-2664-4c4d-8ef5-db7b3eae70a3 ceph-3e9d0706-14b9-4344-be98-8d3ba157887b -wi-ao---- <18.00t
  osd-db-2783958b-1663-46dc-8f2a-43d5ed2d756f    ceph-46b31f42-bd39-48c7-a855-6ca7e722ffe2 -wi-ao---- 100.00g
  osd-db-53753101-acda-421b-ac53-8def95f0b92d    ceph-46b31f42-bd39-48c7-a855-6ca7e722ffe2 -wi-ao---- 100.00g
  osd-db-958f9106-1931-4fc8-98cc-a64f29a78ddd    ceph-46b31f42-bd39-48c7-a855-6ca7e722ffe2 -wi-ao---- 100.00g
  osd-db-82ced9d1-aab3-4c9f-b98f-9dd03691334d    ceph-70008fd1-08b8-4cbc-b8eb-6c5d7168147f -wi-ao---- 100.00g
  osd-db-bf25cca1-37b1-4af2-b87b-afeb0296edb1    ceph-70008fd1-08b8-4cbc-b8eb-6c5d7168147f -wi-ao---- 100.00g
  osd-block-266fbe77-4512-48c1-b80e-28596ffbfc76 ceph-74101368-5145-44c0-8b72-b90160633ac4 -wi-ao---- <18.00t
  osd-block-71e2bd64-0545-4bd6-86eb-11b4d7d9dde1 ceph-aa6188ef-630a-4471-bdd9-71f0ab3228de -wi-ao---- <18.00t
  osd-block-5a0af8ec-5dc2-4ad8-8f9d-fdaf7108434b ceph-c5359b20-222a-42eb-924f-3c776d5cd913 -wi-ao----  17.90t
  osd-db-e51a1c62-4efa-42ac-818f-33afeda5cc61    ceph-c5359b20-222a-42eb-924f-3c776d5cd913 -wi-ao---- 100.00g
  osd-block-ccbbcf09-6aa7-4499-94e1-fc00cad41904 ceph-cc6094f5-cd8a-47d9-ab94-d5cc45321cc7 -wi-ao---- <18.00t
  osd-block-ba721825-178a-4c30-b39b-d71e3611398f ceph-dc6876b6-ec6b-4486-bf94-f11fe5c6151b -wi-ao---- <18.00t

This did work better in version 18.2.7

Regards
--
Robert Sander
Linux Consultant

Heinlein Consulting GmbH
Schwedter Str. 8/9b, 10119 Berlin

https://www.heinlein-support.de

Tel: +49 30 405051 - 0
Fax: +49 30 405051 - 19

Amtsgericht Berlin-Charlottenburg - HRB 220009 B
Geschäftsführer: Peer Heinlein - Sitz: Berlin
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