Hi, this has been discussed a couple of times [1]. Changing an ec profile won't affect existing pools, only new pools created with this updated profile will apply the device-class. Make sure to provide all parameters for the profile update, not just the device-class. Regards, Eugen [1] https://lists.ceph.io/hyperkitty/list/ceph-users@ceph.io/message/YS6S4WQAAUC... Zitat von Thomas Svedberg <Thomas.Svedberg@chalmers.se>:

Hi,

We are running a Nautilus cluster and  have some old and new erasure code profiles. For example: # ceph osd erasure-code-profile get m_erasure crush-device-class=hdd crush-failure-domain=host crush-root=default jerasure-per-chunk-alignment=false k=6 m=2 plugin=jerasure technique=reed_sol_van w=8

# ceph osd erasure-code-profile get c_erasure crush-device-class= crush-failure-domain=host crush-root=default jerasure-per-chunk-alignment=false k=4 m=2 plugin=jerasure technique=reed_sol_van w=8

Here we want to add crush-device-class information to the second profile. Is the following correct? Safe? What will actually happen if we run this command?

# ceph osd erasure-code-profile set c_erasure crush-device-class=hdd k=4 m=2 --force

Thanks for any input! Regards, Thomas Svedberg _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-leave@ceph.io