error writing header: (38) Function not implemented

[athlug]

good afternoon all....just updated proxmox to 4.2 and ceph to the latest (jewel- from hammer)...
the problem is that when i try to create a new vm,i get this error,and it stops..
(please,keep in mind,that i made no changes beyond the upgrade...)

error writing header: (38) Function not implemented
TASK ERROR: create failed - rbd create vm-315-disk-1' error: error writing header: (38) Function not implemented

i'm brand new to this platform,so any help will be appreciated....

 

[tom]

Jewel is not yet stable on Debian, there are a couple of known issues (and fixes). So for now, stay on hammer.

 

[cloudguy]

Hello, recently upgraded to the latest release (4.4-5/c43015a5) + Jewel on one of my PVE notes -- still getting this error. Is there a timeline in getting this supported?

"TASK ERROR: create failed - rbd create vm-100-disk-1' error: error writing header: (38) Function not implemented"

 

[musangberjanggut]

found the solutions. seems like the default features enable for jewel is 61 and for unknown reason all the features fast-diff,deep-flatten and journalin is not able to be activated. it cause the system gives error when try to create the image. You will need to add below to command to your ceph.conf

the only available(so called can be enabled) features in my environment is:
LAYERING = 1
STRIPINGV2 = 2
EXCLUSIVE_LOCK = 4
OBJECT_MAP = 8

the sum of the numeric number for LAYERING, EXCLUSIVE_LOCK, OBJECT_MAP equal to 13.

[client]
rbd_default_features = 13

by having the above config in place, i manage to create a new image and instances