[libvirt-users] "Failed to start domain..."
Sadly, I'm back with another issue. I can do a "system list --all" just fine; however, if I attempt to start the machines, I get back: maas@Bill-MAAS-cc:~$ strace -s 1024 -f -o /tmp/asdfasdf.log virsh -c vbox+ssh://gbadmin@10.20.0.1/system start PXE-client-07 error: Failed to start domain PXE-client-07 error: An error occurred, but the cause is unknown Log files on both client and server are pretty sparse on details of any sort... as, again, is Google. Any ideas? Thanks yet again, -Ken
On Wed, Nov 25, 2015 at 04:17:47PM -0500, Ken D'Ambrosio wrote:
Sadly, I'm back with another issue. I can do a "system list --all" just fine; however, if I attempt to start the machines, I get back:
maas@Bill-MAAS-cc:~$ strace -s 1024 -f -o /tmp/asdfasdf.log virsh -c vbox+ssh://gbadmin@10.20.0.1/system start PXE-client-07 error: Failed to start domain PXE-client-07 error: An error occurred, but the cause is unknown
This means there was an error (some function returned -1), but the error message was not set. Could you capture the backtrace when this happens? It's hard to find the exact point, but going function and checking what returns -1 should do.
Log files on both client and server are pretty sparse on details of any sort... as, again, is Google. Any ideas?
It culd be visible from the logs as well, but not without the code opened in another window to see where we forgot to set the error message.
Thanks yet again,
-Ken
_______________________________________________ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users
This means there was an error (some function returned -1), but the error message was not set. Could you capture the backtrace when this happens? It's hard to find the exact point, but going function and checking what returns -1 should do.
Assuming by "backtrace" you mean the strace output, I went to the end of the file, and then did a reverse search for -1; here were the first hits, with some context: 25533 clock_gettime(0x7 /* CLOCK_??? */, {17970, 938005692}) = 0 25533 clock_gettime(0x7 /* CLOCK_??? */, {17970, 938038620}) = 0 25533 select(7, [3 4], [], NULL, NULL) = 1 (in [3]) 25533 clock_gettime(0x7 /* CLOCK_??? */, {17970, 938107743}) = 0 25533 read(3, "[\1\220\376xM\365a\206\350^8\236\315T\265#\353\270r\201\301|f\30<2 \347\276\37T:>|\241\2403\256\203GN\316=\233N\221\313\32\3630{\255\374O\360\263\374\353l\324\206\272o['I\205+\30\351\304LG\374\202\216\260\340H\342eL\214\377\3131(@:C\202\300\354x\235D\256\355\204G\261\rT5\247lK\364\342\7\232\231\210\25o\23\275\260\325\337\17E\255\300\211\254\277k\375g\347\347\5\273\324\255\324\220A\311\305\365{,J\351DE\245\337\272JBr\243\361\r\2226\330S\354\212$b\1J\37&C\200\225U\351\335", 8192) = 176 25533 close(4) = 0 25533 close(5) = 0 25533 clock_gettime(0x7 /* CLOCK_??? */, {17970, 938396231}) = 0 25533 clock_gettime(0x7 /* CLOCK_??? */, {17970, 938427891}) = 0 25533 close(6) = 0 25533 select(7, [3], [3], NULL, NULL) = 1 (out [3]) 25533 clock_gettime(0x7 /* CLOCK_??? */, {17970, 938544157}) = 0 25533 write(3, "e\303:\261h\272\30\335\373\316\26\323\251\16R\255\310b\226\300\227M*\0\245\326f\217\365J\177*\336\333\3427", 36) = 36 25533 rt_sigaction(SIGWINCH, NULL, {0x557af9c49660, [], SA_RESTORER, 0x7f76f92162f0}, 8) = 0 25533 rt_sigaction(SIGWINCH, {SIG_DFL, [], SA_RESTORER, 0x7f76f92162f0}, NULL, 8) = 0 25533 write(3, "\343(\317\376\241\r\36\306\6\344T\302\217mdTt\23\326\225\330'\375$\7\215\307\0301\211\226\210\\\261x\277\245\342\3149\206R\223@\26\233M\345|\320\337 x\336\325\370'\17w~", 60) = 60 25533 ioctl(0, SNDCTL_TMR_TIMEBASE or SNDRV_TIMER_IOCTL_NEXT_DEVICE or TCGETS, 0x7ffe60de40e0) = -1 ENOTTY (Inappropriate ioctl for device) 25533 fcntl(0, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK) 25533 fcntl(0, F_SETFL, O_RDWR) = 0 25533 ioctl(1, SNDCTL_TMR_TIMEBASE or SNDRV_TIMER_IOCTL_NEXT_DEVICE or TCGETS, 0x7ffe60de40e0) = -1 ENOTTY (Inappropriate ioctl for device) 25533 fcntl(1, F_GETFL) = 0x2 (flags O_RDWR) 25533 ioctl(2, SNDCTL_TMR_TIMEBASE or SNDRV_TIMER_IOCTL_NEXT_DEVICE or TCGETS, 0x7ffe60de40e0) = -1 ENOTTY (Inappropriate ioctl for device) 25533 fcntl(2, F_GETFL) = 0x801 (flags O_WRONLY|O_NONBLOCK) 25533 fcntl(2, F_SETFL, O_WRONLY) = 0 25533 shutdown(3, SHUT_RDWR) = 0 25533 close(3) = 0 25533 exit_group(0) = ? 25533 +++ exited with 0 +++ 25531 <... futex resumed> ) = ? ERESTARTSYS (To be restarted if SA_RESTART is set) If there's any other information I can grab, please do let me know. Thanks for the quick reply (and apologies for the Thanksgiving-induced delay in my response), -Ken
Log files on both client and server are pretty sparse on details of any sort... as, again, is Google. Any ideas?
It culd be visible from the logs as well, but not without the code opened in another window to see where we forgot to set the error message.
Thanks yet again,
-Ken
_______________________________________________ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users [1]
Links: ------ [1] https://www.redhat.com/mailman/listinfo/libvirt-users
On Mon, Nov 30, 2015 at 11:10:52AM -0500, Ken D'Ambrosio wrote:
This means there was an error (some function returned -1), but the error message was not set. Could you capture the backtrace when this happens? It's hard to find the exact point, but going function and checking what returns -1 should do.
Assuming by "backtrace" you mean the strace output, I went to the end of the file, and then did a reverse search for -1; here were the first hits, with some context:
Actually, that does not help much. I meant output of GDB, plus at a certain point that you would have to find. Try enabling the debug logs for now, cleaning them, then reproducing the issue and post the logs somewhere with a link sent here. I'll try going through that to see where the problem might be.
If there's any other information I can grab, please do let me know.
Thanks for the quick reply (and apologies for the Thanksgiving-induced delay in my response),
-Ken
Log files on both client and server are pretty sparse on details of any sort... as, again, is Google. Any ideas?
It culd be visible from the logs as well, but not without the code opened in another window to see where we forgot to set the error message.
Thanks yet again,
-Ken
_______________________________________________ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users [1]
Links: ------ [1] https://www.redhat.com/mailman/listinfo/libvirt-users
_______________________________________________ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users
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Ken D'Ambrosio -
Martin Kletzander