Re: "Failed to start domain..."

["Ken D'Ambrosio" <ken@xxxxxxxx>]

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

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