WAL is 1G (you can allocate 2 to be sure), DB should always be 30G. And this doesn't depend on the size of the data partition :-) 14 марта 2020 г. 22:50:37 GMT+03:00, Victor Hooi <victorhooi@xxxxxxxxx> пишет: >Hi, > >I'm building a 4-node Proxmox cluster, with Ceph for the VM disk >storage. > >On each node, I have: > > > - 1 x 512Gb M.2 SSD (for Proxmox/boot volume) > - 1 x 960GB Intel Optane 905P (for Ceph WAL/DB) > - 6 x 1.92TB Intel S4610 SATA SSD (for Ceph OSD) > >I'm using the Proxmox "pveceph" command to setup the OSDs. > >By default this seems to pick 10% of the OSD size for the DB volume, >and 1% >of the OSD size for the WAL volume. > >This means after four drives, I ran out of space: > ># pveceph osd create /dev/sde -db_dev /dev/nvme0n1 >> create OSD on /dev/sde (bluestore) >> creating block.db on '/dev/nvme0n1' >> Rounding up size to full physical extent 178.85 GiB >> lvcreate >> >'ceph-861ebf6d-8fee-4313-8de6-4e797dc436ee/osd-db-da591d0f-8a05-42fa-bc62-a093bf98aded' >> error: Volume group "ceph-861ebf6d-8fee-4313-8de6-4e797dc436ee" has >> insufficient free space (45784 extents): 45786 required. > > >Anyway, I assume that means I need to tune my DB and WAL volumes down >from >the defaults. > >What advice to you have in terms of making best use of the available >space, >between WAL and DB? > >What is the impact of having WAL and DB smaller than 1% and 10% of OSD >size >respectively? > >Thanks, >Victor >_______________________________________________ >ceph-users mailing list -- ceph-users@xxxxxxx >To unsubscribe send an email to ceph-users-leave@xxxxxxx -- With best regards, Vitaliy Filippov _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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