201 lines
8.5 KiB
C++
201 lines
8.5 KiB
C++
/*************************************************************************
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* Copyright (C) 2012 by Volker Lanz <vl@fidra.de> *
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* Copyright (C) 2016 by Andrius Štikonas <andrius@stikonas.eu> *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License as *
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* published by the Free Software Foundation; either version 3 of *
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* the License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program. If not, see <http://www.gnu.org/licenses/>.*
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*************************************************************************/
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#include "fs/lvm2_pv.h"
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#include "util/externalcommand.h"
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#include "util/capacity.h"
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#include <QString>
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#include <QRegularExpression>
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namespace FS
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{
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FileSystem::CommandSupportType lvm2_pv::m_GetUsed = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType lvm2_pv::m_GetLabel = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType lvm2_pv::m_Create = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType lvm2_pv::m_Grow = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType lvm2_pv::m_Shrink = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType lvm2_pv::m_Move = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType lvm2_pv::m_Check = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType lvm2_pv::m_Copy = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType lvm2_pv::m_Backup = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType lvm2_pv::m_SetLabel = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType lvm2_pv::m_UpdateUUID = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType lvm2_pv::m_GetUUID = FileSystem::cmdSupportNone;
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lvm2_pv::lvm2_pv(qint64 firstsector, qint64 lastsector, qint64 sectorsused, const QString& label) :
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FileSystem(firstsector, lastsector, sectorsused, label, FileSystem::Lvm2_PV)
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{
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}
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void lvm2_pv::init()
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{
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m_Create = findExternal(QStringLiteral("lvm")) ? cmdSupportFileSystem : cmdSupportNone;
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m_Check = findExternal(QStringLiteral("lvm")) ? cmdSupportFileSystem : cmdSupportNone;
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m_Grow = findExternal(QStringLiteral("lvm")) ? cmdSupportFileSystem : cmdSupportNone;
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m_Shrink = findExternal(QStringLiteral("lvm")) ? cmdSupportFileSystem : cmdSupportNone;
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m_GetLabel = cmdSupportCore;
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m_UpdateUUID = findExternal(QStringLiteral("lvm")) ? cmdSupportFileSystem : cmdSupportNone;
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m_Copy = cmdSupportNone; // Copying PV can confuse LVM
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m_Move = (m_Check != cmdSupportNone) ? cmdSupportCore : cmdSupportNone;
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m_GetLabel = cmdSupportNone;
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m_Backup = cmdSupportCore;
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m_GetUUID = cmdSupportCore;
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}
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bool lvm2_pv::supportToolFound() const
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{
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return
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// m_GetUsed != cmdSupportNone &&
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// m_GetLabel != cmdSupportNone &&
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// m_SetLabel != cmdSupportNone &&
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m_Create != cmdSupportNone &&
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m_Check != cmdSupportNone &&
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m_UpdateUUID != cmdSupportNone &&
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m_Grow != cmdSupportNone &&
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m_Shrink != cmdSupportNone &&
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// m_Copy != cmdSupportNone &&
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m_Move != cmdSupportNone &&
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m_Backup != cmdSupportNone &&
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m_GetUUID != cmdSupportNone;
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}
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FileSystem::SupportTool lvm2_pv::supportToolName() const
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{
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return SupportTool(QStringLiteral("lvm2"), QUrl(QStringLiteral("http://sourceware.org/lvm2/")));
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}
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qint64 lvm2_pv::maxCapacity() const
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{
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return Capacity::unitFactor(Capacity::Byte, Capacity::EiB);
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}
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bool lvm2_pv::check(Report& report, const QString& deviceNode) const
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{
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ExternalCommand cmd(report, QStringLiteral("lvm"), { QStringLiteral("pvck"), QStringLiteral("--verbose"), deviceNode });
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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bool lvm2_pv::create(Report& report, const QString& deviceNode) const
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{
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ExternalCommand cmd(report, QStringLiteral("lvm"), { QStringLiteral("pvcreate"), deviceNode });
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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bool lvm2_pv::remove(Report& report, const QString& deviceNode) const
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{
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// TODO: check if PV is a member of an exported VG
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ExternalCommand cmd(report, QStringLiteral("lvm"), { QStringLiteral("pvremove"), QStringLiteral("--force"), QStringLiteral("--force"), QStringLiteral("--yes"), deviceNode });
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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bool lvm2_pv::resize(Report& report, const QString& deviceNode, qint64 length) const
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{
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// TODO: check if the it is legal to resize
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const QString len = QString::number(length / 512) + QStringLiteral("s");
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ExternalCommand cmd(report, QStringLiteral("lvm"), { QStringLiteral("pvresize"), QStringLiteral("--setphysicalvolumesize"), len, deviceNode });
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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bool lvm2_pv::updateUUID(Report& report, const QString& deviceNode) const
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{
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ExternalCommand cmd(report, QStringLiteral("lvm"), { QStringLiteral("pvchange"), QStringLiteral("--uuid"), deviceNode });
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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QString lvm2_pv::getVGName(const QString& deviceNode) //PV node
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{
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ExternalCommand cmd( QStringLiteral("lvm"),
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{ QStringLiteral("pvdisplay"), QStringLiteral("--verbose"), deviceNode });
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if (cmd.run(-1) && cmd.exitCode() == 0) {
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QRegularExpression re(QStringLiteral("VG Name\\h+(\\w+)"));
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QRegularExpressionMatch vgName = re.match(cmd.output());
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if (vgName.hasMatch())
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return vgName.captured(1);
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}
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return QString();
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}
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qint64 lvm2_pv::getTotalPE(const QString& deviceNode) const {
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ExternalCommand cmd( QStringLiteral("lvm"),
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{ QStringLiteral("pvdisplay"), QStringLiteral("--verbose"), deviceNode });
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if (cmd.run(-1) && cmd.exitCode() == 0) {
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QRegularExpression re(QStringLiteral("Total PE\\h+(\\w+)"));
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QRegularExpressionMatch totalPE = re.match(cmd.output());
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if (totalPE.hasMatch())
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return totalPE.captured(1).toLongLong();
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}
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return -1;
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}
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qint64 lvm2_pv::getFreePE(const QString& deviceNode) const {
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ExternalCommand cmd( QStringLiteral("lvm"),
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{ QStringLiteral("pvdisplay"), QStringLiteral("--verbose"), deviceNode });
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if (cmd.run(-1) && cmd.exitCode() == 0) {
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QRegularExpression re(QStringLiteral("Free PE\\h+(\\w+)"));
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QRegularExpressionMatch freePE = re.match(cmd.output());
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if (freePE.hasMatch())
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return freePE.captured(1).toLongLong();
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}
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return -1;
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}
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qint64 lvm2_pv::getAllocatedPE(const QString& deviceNode) const {
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ExternalCommand cmd( QStringLiteral("lvm"),
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{ QStringLiteral("pvdisplay"), QStringLiteral("--verbose"), deviceNode });
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if (cmd.run(-1) && cmd.exitCode() == 0) {
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QRegularExpression re(QStringLiteral("Allocated PE\\h+(\\d+)"));
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QRegularExpressionMatch allocatedPE = re.match(cmd.output());
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if (allocatedPE.hasMatch())
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return allocatedPE.captured(1).toLongLong();
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}
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return -1;
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}
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qint64 lvm2_pv::getPVSize(const QString& deviceNode) const {
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ExternalCommand cmd( QStringLiteral("lvm"),
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{ QStringLiteral("pvdisplay"), QStringLiteral("--verbose"), QStringLiteral("--units"), QStringLiteral("B"), deviceNode });
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if (cmd.run(-1) && cmd.exitCode() == 0) {
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QRegularExpression re(QStringLiteral("PV Size\\h+(\\d+)"));
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QRegularExpressionMatch PVSize = re.match(cmd.output());
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if (PVSize.hasMatch())
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return PVSize.captured(1).toLongLong();
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}
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return -1;
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}
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qint64 lvm2_pv::getPESize(const QString& deviceNode) const {
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ExternalCommand cmd( QStringLiteral("lvm"),
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{ QStringLiteral("pvdisplay"), QStringLiteral("--verbose"), QStringLiteral("--units"), QStringLiteral("B"), deviceNode });
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if (cmd.run(-1) && cmd.exitCode() == 0) {
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QRegularExpression re(QStringLiteral("PE Size\\h+(\\d+)"));
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QRegularExpressionMatch PESize = re.match(cmd.output());
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if (PESize.hasMatch())
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return PESize.captured(1).toLongLong();
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}
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return -1;
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}
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}
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