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[win-pv-devel] Multiple save/restore failing with windows 8.1 64 bit domU



I tried 2 times multiple save/restore (start domU, use it for some minutes, do a save restore, use it, do another save/restore) and in both case second save failed:

xl -vvv save W8 /mnt/vm/save/W8
libxl: debug: libxl.c:6705:libxl_retrieve_domain_configuration: no vtpm from xenstore for domain 40 libxl: debug: libxl.c:6707:libxl_retrieve_domain_configuration: no pci from xenstore for domain 40
Saving to /mnt/vm/save/W8 new xl format (info 0x1/0x0/1941)
libxl: debug: libxl.c:953:libxl_domain_suspend: ao 0x68d910: create: how=(nil) callback=(nil) poller=0x68d970 libxl: debug: libxl_dom.c:1573:libxl__toolstack_save: domain=40 toolstack data size=49 libxl: debug: libxl.c:975:libxl_domain_suspend: ao 0x68d910: inprogress: poller=0x68d970, flags=i
libxl-save-helper: debug: starting save: Success
xc: detail: xc_domain_save: starting save of domid 40
libxl: debug: libxl_dom.c:1278:domain_suspend_callback_common: issuing PVHVM suspend request via XenBus control node libxl: debug: libxl_event.c:577:libxl__ev_xswatch_register: watch w=0x68dae0 wpath=/local/domain/40/control/shutdown token=3/0: register slotnum=3 libxl: debug: libxl_event.c:514:watchfd_callback: watch w=0x68dae0 wpath=/local/domain/40/control/shutdown token=3/0: event epath=/local/domain/40/control/shutdown libxl: debug: libxl_event.c:615:libxl__ev_xswatch_deregister: watch w=0x68dae0 wpath=/local/domain/40/control/shutdown token=3/0: deregister slotnum=3 libxl: debug: libxl_dom.c:1360:domain_suspend_common_pvcontrol_suspending: guest acknowledged suspend request libxl: debug: libxl_dom.c:1379:domain_suspend_common_wait_guest: wait for the guest to suspend libxl: debug: libxl_event.c:577:libxl__ev_xswatch_register: watch w=0x68daf8 wpath=@releaseDomain token=3/1: register slotnum=3 libxl: debug: libxl_event.c:514:watchfd_callback: watch w=0x68daf8 wpath=@releaseDomain token=3/1: event epath=@releaseDomain libxl: error: libxl_dom.c:1451:suspend_common_wait_guest_timeout: guest did not suspend, timed out libxl: debug: libxl_event.c:615:libxl__ev_xswatch_deregister: watch w=0x68daf8 wpath=@releaseDomain token=3/1: deregister slotnum=3
xc: error: Suspend request failed: Internal error
xc: error: Domain appears not to have suspended: Internal error
libxl-save-helper: xc_domain_save.c:2077: xc_domain_save: Assertion `rc' failed. libxl: error: libxl_utils.c:430:libxl_read_exactly: file/stream truncated reading ipc msg header from domain 40 save/restore helper stdout pipe libxl: error: libxl_exec.c:129:libxl_report_child_exitstatus: domain 40 save/restore helper [-1] died due to fatal signal Aborted libxl: error: libxl_dom.c:2035:remus_teardown_done: Remus: failed to teardown device for guest with domid 40, rc -3 libxl: debug: libxl_event.c:1766:libxl__ao_complete: ao 0x68d910: complete, rc=-3
libxl: debug: libxl_event.c:1738:libxl__ao__destroy: ao 0x68d910: destroy
Failed to save domain, resuming domain
libxl: debug: libxl.c:542:libxl_domain_resume: ao 0x68d910: create: how=(nil) callback=(nil) poller=0x68d970
xc: error: Dom 40 not suspended: (shutdown 0, reason 255): Internal error
libxl: error: libxl.c:511:libxl__domain_resume: xc_domain_resume failed for domain 40: Invalid argument libxl: debug: libxl_event.c:1766:libxl__ao_complete: ao 0x68d910: complete, rc=-3 libxl: debug: libxl.c:545:libxl_domain_resume: ao 0x68d910: inprogress: poller=0x68d970, flags=ic
libxl: debug: libxl_event.c:1738:libxl__ao__destroy: ao 0x68d910: destroy
xc: debug: hypercall buffer: total allocations:29 total releases:29
xc: debug: hypercall buffer: current allocations:0 maximum allocations:2
xc: debug: hypercall buffer: cache current size:2
xc: debug: hypercall buffer: cache hits:20 misses:2 toobig:7

If you need more informations/tests tell me and I'll post them.

Thanks for any reply and sorry for my bad english.


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