Bug 1436245

Summary: [RFE] Add support for taking external snapshots of PFLASH nvram image
Product: Red Hat Enterprise Linux 9 Reporter: Peter Krempa <pkrempa>
Component: libvirtAssignee: Peter Krempa <pkrempa>
libvirt sub component: General QA Contact: Meina Li <meili>
Status: NEW --- Docs Contact:
Severity: high    
Priority: medium CC: coli, dyuan, dzheng, gsun, hhan, jsuchane, lersek, lmen, meili, mtessun, pkrempa, rknipp, timao, virt-maint, xuwei, xuzhang
Version: 9.0Keywords: FutureFeature, Reopened, Triaged
Target Milestone: beta   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2022-07-31 07:27:19 UTC Type: Feature Request
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 760547, 1624009    
Bug Blocks:    

Description Peter Krempa 2017-03-27 13:45:49 UTC 
Description of problem:
Currently it's not possible to snaphsot the <nvram> backing image while taking an external snapshots. Add the support so that all files are properly versioned.
Comment 1 Xuesong Zhang 2017-03-29 08:16:57 UTC 
hi, Peter,

From the libvirt.org[1], <mvram> is one specific device for PPC arch. So, I'd like to update the arch of this BZ from "Unspecified" to "ppc64le" for better tracking. Is it ok for you? Please correct me if any of my thoughts is wrong.

[1] nvram device: http://libvirt.org/formatdomain.html#elementsNVRAM
Comment 2 Peter Krempa 2017-03-29 08:23:24 UTC 
No, <nvram> is also used for OVMF, which maps to a second pflash drive. So it certainly  is not ppc64 relevant at all. The ppc64 nvram probably won't be snapshottable, but I did not investiagte further.
Comment 3 Xuesong Zhang 2017-03-29 10:03:31 UTC 
(In reply to Peter Krempa from comment #2)
> No, <nvram> is also used for OVMF, which maps to a second pflash drive. So
> it certainly  is not ppc64 relevant at all. The ppc64 nvram probably won't
> be snapshottable, but I did not investiagte further.

OK, it seesm the <nvram> in this BZ is the following settings in <os>, not the specific device for PPC.

<os>
  ......
  <nvram template='/usr/share/OVMF/OVMF_VARS.fd'>/var/lib/libvirt/nvram/guest_VARS.fd</nvram>
  ......
</os>
Comment 6 Jaroslav Suchanek 2018-04-12 07:08:37 UTC 
Comment 5 should include answers from comment 4.
Comment 9 Jaroslav Suchanek 2019-04-24 12:26:36 UTC 
This bug is going to be addressed in next major release.
Comment 12 RHEL Program Management 2021-01-15 07:33:20 UTC 
After evaluating this issue, there are no plans to address it further or fix it in an upcoming release.  Therefore, it is being closed.  If plans change such that this issue will be fixed in an upcoming release, then the bug can be reopened.
Comment 19 RHEL Program Management 2022-01-31 07:27:08 UTC 
After evaluating this issue, there are no plans to address it further or fix it in an upcoming release.  Therefore, it is being closed.  If plans change such that this issue will be fixed in an upcoming release, then the bug can be reopened.
Comment 22 RHEL Program Management 2022-07-31 07:27:19 UTC 
After evaluating this issue, there are no plans to address it further or fix it in an upcoming release.  Therefore, it is being closed.  If plans change such that this issue will be fixed in an upcoming release, then the bug can be reopened.
Comment 23 Meina Li 2022-08-01 01:47:37 UTC 
Reopen this bug according to the comment 13.
Comment 25 Jaroslav Suchanek 2022-09-21 08:38:30 UTC 
*** Bug 2128504 has been marked as a duplicate of this bug. ***