On 09/23/2011 09:47 AM, Ian Campbell wrote:
This seems to be taking the non-cancelled resume path, does this patch
help at all:
diff -r d7b14b76f1eb tools/libxl/libxl.c
--- a/tools/libxl/libxl.c Thu Sep 22 14:26:08 2011 +0100
+++ b/tools/libxl/libxl.c Fri Sep 23 08:45:28 2011 +0100
@@ -246,7 +246,7 @@ int libxl_domain_resume(libxl_ctx *ctx,
rc = ERROR_NI;
goto out;
}
- if (xc_domain_resume(ctx->xch, domid, 0)) {
+ if (xc_domain_resume(ctx->xch, domid, 1)) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR,
"xc_domain_resume failed for domain %u",
domid);
I don't think that's a solution but if this patch works then it may
indicate a problem with xc_domain_resume_any.
For the curent xen-4.1-testing.hg the patch had to be modified to a
different position:
--- a/tools/libxl/libxl.c Thu Sep 22 14:26:08 2011 +0100
+++ b/tools/libxl/libxl.c Fri Sep 23 08:45:28 2011 +0100
@@ -229,7 +229,7 @@
rc = ERROR_NI;
goto out;
}
- if (xc_domain_resume(ctx->xch, domid, 0)) {
+ if (xc_domain_resume(ctx->xch, domid, 1)) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR,
"xc_domain_resume failed for domain %u",
domid);
I did a clean/make/install after that, compilation worked fine.
I then tested the migration towards an unsuitable target again and it
did what you thought it could do. The guest resumes correctly at sender
###############
root@xenturio1:~# xl -vvv migrate thishopefullywontfail xenturio2
Saving to migration stream new xl format (info 0x0/0x0/407)
migration target: Ready to receive domain.
Loading new save file incoming migration stream (new xl fmt info
0x0/0x0/407)
Savefile contains xl domain config
xc: detail: Had 0 unexplained entries in p2m table
xc: Saving memory: iter 0 (last sent 0 skipped 0): 133120/133120 100%
xc: detail: delta 9529ms, dom0 93%, target 1%, sent 449Mb/s, dirtied
1Mb/s 502 pages
xc: Saving memory: iter 1 (last sent 130592 skipped 480): 133120/133120
100%
xc: detail: delta 37ms, dom0 91%, target 2%, sent 444Mb/s, dirtied
30Mb/s 34 pages
xc: Saving memory: iter 2 (last sent 502 skipped 0): 133120/133120 100%
xc: detail: Start last iteration
libxl: debug: libxl_dom.c:384:libxl__domain_suspend_common_callback
issuing PV suspend request via XenBus control node
libxl: debug: libxl_dom.c:389:libxl__domain_suspend_common_callback wait
for the guest to acknowledge suspend request
libxl: debug: libxl_dom.c:434:libxl__domain_suspend_common_callback
guest acknowledged suspend request
libxl: debug: libxl_dom.c:438:libxl__domain_suspend_common_callback wait
for the guest to suspend
libxl: debug: libxl_dom.c:450:libxl__domain_suspend_common_callback
guest has suspended
xc: detail: SUSPEND shinfo 0007fafc
xc: detail: delta 204ms, dom0 3%, target 0%, sent 4Mb/s, dirtied 25Mb/s
156 pages
xc: Saving memory: iter 3 (last sent 30 skipped 4): 133120/133120 100%
xc: detail: delta 3ms, dom0 0%, target 0%, sent 1703Mb/s, dirtied
1703Mb/s 156 pages
xc: detail: Total pages sent= 131280 (0.99x)
xc: detail: (of which 0 were fixups)
xc: detail: All memory is saved
xc: detail: Save exit rc=0
libxl: error: libxl.c:900:validate_virtual_disk failed to stat
/dev/xen-data/thishopefullywontfail-root: No such file or directory
cannot add disk 0 to domain: -6
migration target: Domain creation failed (code -3).
libxl: error: libxl_utils.c:408:libxl_read_exactly file/stream truncated
reading ready message from migration receiver stream
libxl: info: libxl_exec.c:72:libxl_report_child_exitstatus migration
target process [16608] exited with error status 3
Migration failed, resuming at sender.
root@xenturio1:~# xl console thishopefullywontfail
PM: freeze of devices complete after 0.197 msecs
PM: late freeze of devices complete after 0.067 msecs
PM: early thaw of devices complete after 0.074 msecs
PM: thaw of devices complete after 0.077 msecs
root@thishopefullywontfail:~#
#####################
So that works
There is no mention of the migration failing in the guest log though,
maybe when a final patch is made it should log that failing migration?
with best regards
andreas
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
Home