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LVM2 unmounting and disabling support in ClearMountsJob.

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This commit is contained in:
Teo Mrnjavac 2015-06-11 03:17:52 +02:00
parent 41eca43920
commit d6441bbcb4
2 changed files with 77 additions and 10 deletions
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86
src/modules/partition/jobs/ClearMountsJob.cpp
View File

@ -49,12 +49,14 @@ ClearMountsJob::exec()
{
QStringList goodNews;
QString deviceName = m_device->deviceNode().split( '/' ).last();
QProcess process;
process.setProgram( "sh" );
process.setArguments( {
"-c",
QString( "echo $(awk '{print $4}' /proc/partitions | sed -e '/name/d' -e '/^$/d' -e '/[1-9]/!d' | grep %1)" )
.arg( m_device->deviceNode().split( '/' ).last() )
.arg( deviceName )
} );
process.start();
process.waitForFinished();
@ -62,19 +64,65 @@ ClearMountsJob::exec()
QString partitions = process.readAllStandardOutput();
QStringList partitionsList = partitions.simplified().split( ' ' );
// First we umount all LVM logical volumes we can find
process.start( "lvscan", { "-a" } );
process.waitForFinished();
if ( process.exitCode() == 0 ) //means LVM2 tools are installed
{
QStringList lvscanLines = QString::fromLocal8Bit( process.readAllStandardOutput() ).split( '\n' );
foreach ( const QString& lvscanLine, lvscanLines )
{
QString lvPath = lvscanLine.simplified().split( ' ' ).value( 1 ); //second column
lvPath = lvPath.replace( '\'', "" );
QString news = tryUmount( lvPath );
if ( !news.isEmpty() )
goodNews.append( news );
}
}
else
cDebug() << "WARNING: this system does not seem to have LVM2 tools.";
// Then we go looking for volume groups that use this device for physical volumes
process.start( "pvdisplay", { "-C", "--noheadings" } );
process.waitForFinished();
if ( process.exitCode() == 0 ) //means LVM2 tools are installed
{
QString pvdisplayOutput = process.readAllStandardOutput();
if ( !pvdisplayOutput.simplified().isEmpty() ) //means there is at least one LVM PV
{
QSet< QString > vgSet;
QStringList pvdisplayLines = pvdisplayOutput.split( '\n' );
foreach ( const QString& pvdisplayLine, pvdisplayLines )
{
QString pvPath = pvdisplayLine.simplified().split( ' ' ).value( 0 );
QString vgName = pvdisplayLine.simplified().split( ' ' ).value( 1 );
if ( !pvPath.contains( deviceName ) )
continue;
vgSet.insert( vgName );
}
foreach ( const QString& vgName, vgSet )
{
process.start( "vgchange", { "-an", vgName } );
process.waitForFinished();
if ( process.exitCode() == 0 )
goodNews.append( QString( "Successfully disabled volume group %1." ).arg( vgName ) );
}
}
}
else
cDebug() << "WARNING: this system does not seem to have LVM2 tools.";
foreach ( QString p, partitionsList )
{
QString partPath = QString( "/dev/%1" ).arg( p );
process.start( "umount", { partPath } );
process.waitForFinished();
if ( process.exitCode() == 0 )
goodNews.append( QString( "Successfully unmounted %1." ).arg( partPath ) );
process.start( "swapoff", { partPath } );
process.waitForFinished();
if ( process.exitCode() == 0 )
goodNews.append( QString( "Successfully disabled swap %1." ).arg( partPath ) );
QString news = tryUmount( partPath );
if ( !news.isEmpty() )
goodNews.append( news );
}
Calamares::JobResult ok = Calamares::JobResult::ok();
@ -86,3 +134,21 @@ ClearMountsJob::exec()
return ok;
}
QString
ClearMountsJob::tryUmount( const QString& partPath )
{
QProcess process;
process.start( "umount", { partPath } );
process.waitForFinished();
if ( process.exitCode() == 0 )
return QString( "Successfully unmounted %1." ).arg( partPath );
process.start( "swapoff", { partPath } );
process.waitForFinished();
if ( process.exitCode() == 0 )
return QString( "Successfully disabled swap %1." ).arg( partPath );
return QString();
}

1
src/modules/partition/jobs/ClearMountsJob.h
View File

@ -35,6 +35,7 @@ public:
QString prettyName() const override;
Calamares::JobResult exec() override;
private:
QString tryUmount( const QString& partPath );
Device* m_device;
};