On Wed, Nov 14, 2012 at 12:46:15PM +0200, Henrik Ahlgren wrote:
On Wed, Nov 14, 2012 at 10:08:45AM +0000, Daniel P. Berrange wrote:
You definitely need to figure out how to set the SIGPIPE handler to 'ignore'. libvirt.so does not do this, because it is bad practice for a library to set application global state like this. Not sure what you tried, but I'd definitely expect this to work:
$SIG{'PIPE'} = 'IGNORE';
I don't know what I'm doing wrong, but consider the following simple test script. Perhaps this is a Debian issue?
#!/usr/bin/perl use Sys::Virt 0.9.2; my $vmm = Sys::Virt->new(address => "qemu+ssh://root\@SOME.HOST/system") or die; $SIG{'PIPE'} = 'IGNORE'; $| = 1; while (1) { eval { my $dummy = $vmm->get_node_info }; print "."; sleep 1; }
Let's run it and go to SOME.HOST to kill the SSH process:
If you strace this, do you see the SIGPIPE handler being set to IGNORE. On my system I do: $ strace ./demo.pl 2>&1 | grep SIGPIPE rt_sigaction(SIGPIPE, {SIG_IGN, [], SA_RESTORER, 0x343ca0efe0}, NULL, 8) = 0 rt_sigaction(SIGPIPE, {SIG_IGN, [], SA_RESTORER, 0x343ca0efe0}, {SIG_IGN, [], SA_RESTORER, 0x343ca0efe0}, 8) = 0 and I don't see any EPIPE error when killing ssh Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|