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Work around: retry ped_disk_commit_to_os() after sleep(1) (#604298) 

Bug #604298 involves a problem that can occur when GParted uses
libparted to manipulate a partition table, but the
ped_disk_commit_to_os() function fails to inform the Linux kernel of
these changes to the partition table.  This problem is intermittent in
nature and is difficult to reliably reproduce.

This change is an attempt at a work around.  If the first call to
ped_disk_commit_to_os() fails, then we sleep for 1 second to allow the
system to settle before invoking the function call again.  My testing
has shown that this greatly improves the chances of successfully
informing the kernel of partition changes.

Thanks go to François Dupoux and Steven Shiau for their suggestions
and help to resolve this problem.
This commit is contained in:
Curtis Gedak 2010-01-15 15:30:50 -07:00
parent 9c2d70e1d6
commit bf86fd3f9c
1 changed files with 11 additions and 0 deletions
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11
src/GParted_Core.cc
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@ -2762,8 +2762,19 @@ bool GParted_Core::commit_to_os( std::time_t timeout )
if ( dmraid .is_dmraid_device( lp_disk ->dev ->path ) )
succes = true ;
else
{
succes = ped_disk_commit_to_os( lp_disk ) ;
//FIXME: Work around to try to alleviate problems caused by
// bug #604298 - Failure to inform kernel of partition changes
// If not successful the first time, try one more time.
if ( ! succes )
{
sleep( 1 ) ;
succes = ped_disk_commit_to_os( lp_disk ) ;
}
}
settle_device( timeout ) ;
return succes ;