Hello, but when I try to list devices config with ceph-volume, I can see a DB devices, but no WAL devices: ceph-volume lvm list ====== osd.8 ======= [db] /dev/ceph-5aa92e38-077b-48e2-bda6-5b7db7b7701c/osd-db-bfd11468-d109-4f85-9723-75976f51bfb9 block device /dev/ceph-eaf5f0d7-ad50-4009-9ee6-04b8204b5b1a/osd-block-26b1d4b7-2425-4a2f-912b-111cf66a5970 block uuid j4s9lv-wS9n-xg2W-I4Y0-fUSu-Vuvl-9gOB2P cephx lockbox secret cluster fsid 2c565e24-7850-47dc-a751-a6357cbbaf2a cluster name ceph crush device class db device /dev/ceph-5aa92e38-077b-48e2-bda6-5b7db7b7701c/osd-db-bfd11468-d109-4f85-9723-75976f51bfb9 db uuid d9MZ2r-ImXX-Xod0-TNDS-tqi5-oG5Y-wrXFtW encrypted 0 osd fsid 26b1d4b7-2425-4a2f-912b-111cf66a5970 osd id 8 osdspec affinity osd_spec_default type db vdo 0 devices /dev/nvme0n1 [block] /dev/ceph-eaf5f0d7-ad50-4009-9ee6-04b8204b5b1a/osd-block-26b1d4b7-2425-4a2f-912b-111cf66a5970 block device /dev/ceph-eaf5f0d7-ad50-4009-9ee6-04b8204b5b1a/osd-block-26b1d4b7-2425-4a2f-912b-111cf66a5970 block uuid j4s9lv-wS9n-xg2W-I4Y0-fUSu-Vuvl-9gOB2P cephx lockbox secret cluster fsid 2c565e24-7850-47dc-a751-a6357cbbaf2a cluster name ceph crush device class db device /dev/ceph-5aa92e38-077b-48e2-bda6-5b7db7b7701c/osd-db-bfd11468-d109-4f85-9723-75976f51bfb9 db uuid d9MZ2r-ImXX-Xod0-TNDS-tqi5-oG5Y-wrXFtW encrypted 0 osd fsid 26b1d4b7-2425-4a2f-912b-111cf66a5970 osd id 8 osdspec affinity osd_spec_default type block vdo 0 devices /dev/sdi (part of listing...) Sincerely Jan Marek Dne Po, čec 10, 2023 at 08:10:58 CEST napsal Eugen Block:
Hi,
if you don't specify a different device for WAL it will be automatically colocated on the same device as the DB. So you're good with this configuration.
Regards, Eugen
Zitat von Jan Marek <jmarek@jcu.cz>:
Hello,
I've tried to add to CEPH cluster OSD node with a 12 rotational disks and 1 NVMe. My YAML was this:
service_type: osd service_id: osd_spec_default service_name: osd.osd_spec_default placement: host_pattern: osd8 spec: block_db_size: 64G data_devices: rotational: 1 db_devices: paths: - /dev/nvme0n1 filter_logic: AND objectstore: bluestore
Now I have 12 OSD with DB on NVMe device, but without WAL. How I can add WAL to this OSD?
NVMe device still have 128GB free place.
Thanks a lot.
Sincerely Jan Marek -- Ing. Jan Marek University of South Bohemia Academic Computer Centre Phone: +420389032080 http://www.gnu.org/philosophy/no-word-attachments.cs.html
_______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-leave@ceph.io
-- Ing. Jan Marek University of South Bohemia Academic Computer Centre Phone: +420389032080 http://www.gnu.org/philosophy/no-word-attachments.cs.html