[Xen-users] xl save

[H C <hbc1024@xxxxxxxxx>]

I'm running xen 4.4.1 on arch linux and I'm not having any luck with
saving an arch PV guest.

Does the guest OS have to support suspending? I suspect it does but
would like to confirm before I go down the path of setting it up.

When I execute xl save with the domain name I don't get any error
messages.  The restore fails, however.

Its odd because when I ran xl save with the domain id (instead of the
name), it did fail during the save with a complaint about the guest
not suspending.

[ssh log below]

I googled around for some of the text in the error messages and did
not find anything useful.

The closest I came was this former mail list
conversation(http://lists.xen.org/archives/html/xen-devel/2014-03/msg01647.html),
however, it seems to be about HVM so I'm not sure it is related to my
issue.

And this one but it is old:
http://xen.crc.id.au/bugs/print_bug_page.php?bug_id=7

Thanks in advance.


[root@earth ~]# xl save arch2 /vms/arch2/save
Saving to /vms/arch2/save new xl format (info 0x0/0x0/226)
xc: Saving memory: iter 0 (last sent 0 skipped 0): 134217728/134217728  100%
--------
[root@earth arch2]# xl restore  /vms/arch2/save
Loading new save file /vms/arch2/save (new xl fmt info 0x0/0x0/226)
 Savefile contains xl domain config
Parsing config from <saved>
libxl: error: libxl_utils.c:396:libxl_read_exactly: file/stream
truncated reading ipc msg header from domain 19 save/restore helper
stdout pipe
libxl: error: libxl_exec.c:129:libxl_report_child_exitstatus: domain
19 save/restore helper [-1] died due to fatal signal Killed
libxl: error: libxl_create.c:1022:domcreate_rebuild_done: cannot
(re-)build domain: -3
--------
[root@earth arch2]# xl restore  /vms/arch2/arch2.c  /vms/arch2/save
Loading new save file /vms/arch2/save (new xl fmt info 0x0/0x0/226)
 Savefile contains xl domain config
Parsing config from /vms/arch2/arch2.c
libxl: error: libxl_utils.c:396:libxl_read_exactly: file/stream
truncated reading ipc msg header from domain 20 save/restore helper
stdout pipe
libxl: error: libxl_exec.c:129:libxl_report_child_exitstatus: domain
20 save/restore helper [-1] died due to fatal signal Killed
libxl: error: libxl_create.c:1022:domcreate_rebuild_done: cannot
(re-)build domain: -3


----------------------------------------------


[root@earth new]# xl save 26 /vms/arch2/save
Saving to /vms/arch2/save new xl format (info 0x0/0x0/226)
libxl: error: libxl_dom.c:1099:libxl__domain_suspend_common_callback:
guest didn't acknowledge suspend, cancelling request
libxl: error: libxl_dom.c:1121:libxl__domain_suspend_common_callback:
guest didn't acknowledge suspend, request cancelled
xc: error: Suspend request failed: Internal error
xc: error: Domain appears not to have suspended: Internal error
libxl: error: libxl_dom.c:1406:libxl__xc_domain_save_done: saving
domain: domain did not respond to suspend request: Success
Failed to save domain, resuming domain

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