ubuntu cloud image does not support persistent memory disk.
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
kernel-package (Ubuntu) |
New
|
Undecided
|
Unassigned |
Bug Description
The persistent memory device can be reconginzed in VM with guest OS ubuntu-
But not with ubuntu cloud image (ubuntu-
When I compare the kernel modules between the VM with live server and VM with cloud image, I find there are not relative modules of persistent memory disk for VM with cloud image. please check the attached screen shot file.
Steps:
1. create VM with image ubuntu-
2. poweroff the VM and add pmem disk
3. poweon VM, I can see /dev/pmem0 with guest OS ubuntu-
1) with guest OS ubuntu-
device_dax 20480 1 dax_pmem_compat
nd_pmem 24576 0
nd_btt 28672 1 nd_pmem
2) with guest OS ubuntu-
Note:
1) ubuntu-
this image have /lib/modules/
2) ubuntu-
Not find dax_pmem_core.ko in this image