[Libguestfs] [PATCH 1/3] Fix RHEV cleanup on unclean shutdown

Cleanup was not happening properly if a migration to RHEV was killed prematurely with a Ctrl-C. Firstly, the SIGINT and SIGQUIT handlers were not being registered early enough in virt-v2v.pl. Secondly, if Ctrl-C killed the guestfs qemu process first it would deliver a SIGPIPE to v2v, which caused an unclean shutdown without cleanup. Fixes RHBZ#596015 --- v2v/virt-v2v.pl | 17 ++++++++++++++--- 1 files changed, 14 insertions(+), 3 deletions(-) diff --git a/v2v/virt-v2v.pl b/v2v/virt-v2v.pl index bed69a0..36297ed 100755 --- a/v2v/virt-v2v.pl +++ b/v2v/virt-v2v.pl @@ -214,6 +214,14 @@ Display version number and exit. =cut +$SIG{'INT'} = \&signal_exit; +$SIG{'QUIT'} = \&signal_exit; + +# SIGPIPE will cause an untidy exit of the perl process, without calling +# destructors. We don't rely on it anywhere, as we check for errors when reading +# from or writing to a pipe. +$SIG{'PIPE'} = 'IGNORE'; + # Initialise the message output prefix Sys::VirtV2V::UserMessage->set_identifier('virt-v2v'); @@ -362,9 +370,6 @@ if ($output_method eq 'rhev') { $> = "0"; } -$SIG{'INT'} = \&close_guest_handle; -$SIG{'QUIT'} = \&close_guest_handle; - # Inspect the guest my $os = inspect_guest($g); @@ -425,6 +430,12 @@ sub close_guest_handle } } +sub signal_exit +{ + close_guest_handle(); + exit(1); +} + sub get_guestfs_handle { my ($storage, $transferiso) = @_; -- 1.7.0.1