| 2022-10-18 10:12:36 |
vmware-gos-Yuhua |
bug |
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added bug |
| 2022-10-18 10:13:29 |
vmware-gos-Yuhua |
attachment added |
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compare_pmem.png https://bugs.launchpad.net/ubuntu/+source/ndctl/+bug/1993281/+attachment/5624829/+files/compare_pmem.png |
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| 2022-10-18 10:14:31 |
vmware-gos-Yuhua |
bug |
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added subscriber vmware-gos-qa |
| 2022-10-18 10:14:43 |
vmware-gos-Yuhua |
bug |
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added subscriber John Savanyo |
| 2022-10-18 10:15:42 |
vmware-gos-Yuhua |
affects |
ndctl (Ubuntu) |
kernel-package (Ubuntu) |
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| 2022-10-19 02:18:07 |
vmware-gos-Yuhua |
description |
The persistent memory device can be reconginzed in VM with guest OS ubuntu-22.04-live-server-amd64.iso
But not with ubuntu cloud image (ubuntu-22.04-server-cloudimg-amd64.ova).
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-22.04-server-cloudimg-amd64.ova / ubuntu-22.04-live-server-amd64.iso in ESXi 7.0
2) poweroff the VM and add pmem disk
3) poweon VM, I can see /dev/pmem0 with guest OS ubuntu-22.04-live-server-amd64.iso in ESXi 7.0. but not with guest OS ubuntu-22.04-server-cloudimg-amd64.ova |
The persistent memory device can be reconginzed in VM with guest OS ubuntu-22.04-live-server-amd64.iso
But not with ubuntu cloud image (ubuntu-22.04-server-cloudimg-amd64.ova).
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-22.04-server-cloudimg-amd64.ova / ubuntu-22.04-live-server-amd64.iso in ESXi 7.0
2. poweroff the VM and add pmem disk
3. poweon VM, I can see /dev/pmem0 with guest OS ubuntu-22.04-live-server-amd64.iso in ESXi 7.0. but not with guest OS ubuntu-22.04-server-cloudimg-amd64.ova
1) with guest OS ubuntu-22.04-live-server-amd64.iso, the output when type command "lsmod | grep pmem"
dax_pmem_compat 16384 0
device_dax 20480 1 dax_pmem_compat
nd_pmem 24576 0
dax_pmem_core 16384 1 dax_pmem_compat
nd_btt 28672 1 nd_pmem
2) with guest OS ubuntu-22.04-server-cloudimg-amd64.ova, no text output when type command "lsmod | grep pmem"
Note:
ubuntu-22.04-server-cloudimg-amd64.ova have kernel 5.15.0-50-generic
ubuntu-22.04-live-server-amd64.iso have kernel 5.15.0-43-generic |
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| 2022-10-19 02:23:39 |
vmware-gos-Yuhua |
description |
The persistent memory device can be reconginzed in VM with guest OS ubuntu-22.04-live-server-amd64.iso
But not with ubuntu cloud image (ubuntu-22.04-server-cloudimg-amd64.ova).
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-22.04-server-cloudimg-amd64.ova / ubuntu-22.04-live-server-amd64.iso in ESXi 7.0
2. poweroff the VM and add pmem disk
3. poweon VM, I can see /dev/pmem0 with guest OS ubuntu-22.04-live-server-amd64.iso in ESXi 7.0. but not with guest OS ubuntu-22.04-server-cloudimg-amd64.ova
1) with guest OS ubuntu-22.04-live-server-amd64.iso, the output when type command "lsmod | grep pmem"
dax_pmem_compat 16384 0
device_dax 20480 1 dax_pmem_compat
nd_pmem 24576 0
dax_pmem_core 16384 1 dax_pmem_compat
nd_btt 28672 1 nd_pmem
2) with guest OS ubuntu-22.04-server-cloudimg-amd64.ova, no text output when type command "lsmod | grep pmem"
Note:
ubuntu-22.04-server-cloudimg-amd64.ova have kernel 5.15.0-50-generic
ubuntu-22.04-live-server-amd64.iso have kernel 5.15.0-43-generic |
The persistent memory device can be reconginzed in VM with guest OS ubuntu-22.04-live-server-amd64.iso
But not with ubuntu cloud image (ubuntu-22.04-server-cloudimg-amd64.ova).
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-22.04-server-cloudimg-amd64.ova / ubuntu-22.04-live-server-amd64.iso in ESXi 7.0
2. poweroff the VM and add pmem disk
3. poweon VM, I can see /dev/pmem0 with guest OS ubuntu-22.04-live-server-amd64.iso in ESXi 7.0. but not with guest OS ubuntu-22.04-server-cloudimg-amd64.ova
1) with guest OS ubuntu-22.04-live-server-amd64.iso, the output when type command "lsmod | grep pmem"
dax_pmem_compat 16384 0
device_dax 20480 1 dax_pmem_compat
nd_pmem 24576 0
dax_pmem_core 16384 1 dax_pmem_compat
nd_btt 28672 1 nd_pmem
2) with guest OS ubuntu-22.04-server-cloudimg-amd64.ova, no text output when type command "lsmod | grep pmem"
Note:
1) ubuntu-22.04-live-server-amd64.iso have kernel 5.15.0-43-generic
this image have /lib/modules/5.15.0-43-generic/kernel/drivers/dax/pmem/dax_pmem_core.ko
2) ubuntu-22.04-server-cloudimg-amd64.ova have kernel 5.15.0-50-generic
Not find dax_pmem_core.ko in this image |
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