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Re: staging: unable to restore HVM with Viridian param set
- To: Tamas K Lengyel <tamas.k.lengyel@xxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Ian Jackson <iwj@xxxxxxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, "Paul Durrant" <paul@xxxxxxx>, Igor Druzhinin <igor.druzhinin@xxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Mon, 1 Feb 2021 22:57:18 +0000
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On 01/02/2021 22:51, Tamas K Lengyel wrote:
> Hi all,
> trying to restore a Windows VM saved on Xen 4.14 with Xen staging results in:
>
> # xl restore -p /shared/cfg/windows10.save
> Loading new save file /shared/cfg/windows10.save (new xl fmt info
> 0x3/0x0/1475)
> Savefile contains xl domain config in JSON format
> Parsing config from <saved>
> xc: info: Found x86 HVM domain from Xen 4.14
> xc: info: Restoring domain
> xc: error: set HVM param 9 = 0x0000000000000065 (17 = File exists):
> Internal error
> xc: error: Restore failed (17 = File exists): Internal error
> libxl: error: libxl_stream_read.c:850:libxl__xc_domain_restore_done:
> restoring domain: File exists
> libxl: error: libxl_create.c:1581:domcreate_rebuild_done: Domain
> 8:cannot (re-)build domain: -3
> libxl: error: libxl_domain.c:1182:libxl__destroy_domid: Domain
> 8:Non-existant domain
> libxl: error: libxl_domain.c:1136:domain_destroy_callback: Domain
> 8:Unable to destroy guest
> libxl: error: libxl_domain.c:1063:domain_destroy_cb: Domain
> 8:Destruction of domain failed
>
> Running on staging 419cd07895891c6642f29085aee07be72413f08c
CC'ing maintainers and those who've edited the code recently.
What is happening is xl/libxl is selecting some viridian settings,
applying them to the domain, and then the migrations stream has a
different set of viridian settings.
For a migrating-in VM, nothing should be set during domain build.
Viridian state has been part of the migrate stream since before mig-v2,
so can be considered to be everywhere relevant now.
~Andrew
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