Some time ago on Luminous I also had to change the crush rules on a all hdd cluster to hdd (to prepare for adding ssd's and ssd pools). And pg's started migrating while everything already was on hdd's, looks like this is still not fixed?
Sage responded to a thread yesterday, how to change crush device classes without rebalancing (crushtool reclassify):
https://lists.ceph.io/hyperkitty/list/ceph-users@xxxxxxx/thread/675QZ2JXXX4RPRNPK2NL7FB5MVANKUB2/ Zitat von Marc Roos <M.Roos@xxxxxxxxxxxxxxxxx>:
Some time ago on Luminous I also had to change the crush rules on a all hdd cluster to hdd (to prepare for adding ssd's and ssd pools). And pg's started migrating while everything already was on hdd's, looks like this is still not fixed? -----Original Message----- From: Raymond Berg Hansen [mailto:raymondbh@xxxxxxxxx] Sent: dinsdag 1 oktober 2019 14:32 To: ceph-users@xxxxxxx Subject: Re: Nautilus pg autoscale, data lost? You are absolutly right, I had made a crush rule for device class hdd. Did not put this in connection with this problem. When I put the pools back in the default crush rule things are starting to fix itself it seems. Have I done something wrong with this crush rule? # rules rule replicated_rule { id 0 type replicated min_size 1 max_size 10 step take default step chooseleaf firstn 0 type host step emit } rule replicated-hdd { id 1 type replicated min_size 1 max_size 10 step take default class hdd step chooseleaf firstn 0 type datacenter step emit } _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
_______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
