23 Sep
2020
23 Sep
'20
12:36 p.m.
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/YS6S4WQAAU…
Zitat von Thomas Svedberg <Thomas.Svedberg(a)chalmers.se>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
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