Oh! Sorry Alwin. I have some urgence to do this. So this what I do... First, I insert all HDDs, both SAS and SSD, into OSD tree. Than, I check if the system could detect SSD as ssd and SAS as hdd, but there's not difference! It's show all HDDs as hdd! So, I change the class with this commands: ceph osd crush rm-device-class osd.7 ceph osd crush set-device-class ssd osd.7 ceph osd crush rm-device-class osd.8 ceph osd crush set-device-class ssd osd.8 ceph osd crush rm-device-class osd.12 ceph osd crush set-device-class ssd osd.12 ceph osd crush rm-device-class osd.13 ceph osd crush set-device-class ssd osd.13 ceph osd crush rm-device-class osd.14 ceph osd crush set-device-class ssd osd.14
After that, ceph osd crush tree --show-shadow show me different types of HDD... ceph osd crush tree --show-shadow ID CLASS WEIGHT TYPE NAME -24 ssd 4.36394 root default~ssd -20 ssd 0 host pve1~ssd -21 ssd 0 host pve2~ssd -17 ssd 0.87279 host pve3~ssd 7 ssd 0.87279 osd.7 -18 ssd 0.87279 host pve4~ssd 8 ssd 0.87279 osd.8 -19 ssd 0.87279 host pve5~ssd 12 ssd 0.87279 osd.12 -22 ssd 0.87279 host pve6~ssd 13 ssd 0.87279 osd.13 -23 ssd 0.87279 host pve7~ssd 14 ssd 0.87279 osd.14 -2 hdd 12.00282 root default~hdd -10 hdd 1.09129 host pve1~hdd 0 hdd 1.09129 osd.0 ..... ..... Then, I have created the rule ceph osd crush rule create-replicated SSDPOOL default host ssd Then create a POOL named SSDs and then assigned the new pool ceph osd pool set SSDs crush_rule SSDPOOL It's seems to work properly... What you thing? --- Gilberto Nunes Ferreira Em ter., 14 de abr. de 2020 às 15:30, Alwin Antreich <a.antre...@proxmox.com> escreveu: > On Tue, Apr 14, 2020 at 02:35:55PM -0300, Gilberto Nunes wrote: > > Hi there > > > > I have 7 servers with PVE 6 all updated... > > All servers has named pve1,pve2 and so on... > > On pve3, pve4 and pve5 has SSD HD of 960GB. > > So we decided to create a second pool that will use only this SSD. > > I have readed Ceph CRUSH & device classes in order to do that! > > So just to do things right, I need check that out: > > 1 - first create OSD's with all HD, SAS and SSD > > 2 - second create different pool with command bellow: > > ruleset: > > > > ceph osd crush rule create-replicated <rule-name> <root> > > <failure-domain> <class> > > > > create pool > > > > ceph osd pool set <pool-name> crush_rule <rule-name> > > > > > > Well, my question is: can I create OSD with all disk either SAS and > > SSD, and then after that, create the ruleset and the pool? > > Is this generated some impact during this operations?? > If your OSD types aren't mixed, then best create the rule for the > existing pool first. All data will move, once the rule is applied. So, > not much to movement if they are already on the correct OSD type. > > -- > Cheers, > Alwin > > _______________________________________________ > pve-user mailing list > pve-user@pve.proxmox.com > https://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user > _______________________________________________ pve-user mailing list pve-user@pve.proxmox.com https://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
