335 lines
11 KiB
C++
335 lines
11 KiB
C++
/*************************************************************************
|
|
* Copyright (C) 2012 by Volker Lanz <vl@fidra.de> *
|
|
* Copyright (C) 2016 by Andrius Štikonas <andrius@stikonas.eu> *
|
|
* *
|
|
* This program is free software; you can redistribute it and/or *
|
|
* modify it under the terms of the GNU General Public License as *
|
|
* published by the Free Software Foundation; either version 3 of *
|
|
* the License, or (at your option) any later version. *
|
|
* *
|
|
* This program is distributed in the hope that it will be useful, *
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
|
|
* GNU General Public License for more details. *
|
|
* *
|
|
* You should have received a copy of the GNU General Public License *
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.*
|
|
*************************************************************************/
|
|
|
|
#include "fs/lvm2_pv.h"
|
|
|
|
#include "util/externalcommand.h"
|
|
#include "util/capacity.h"
|
|
|
|
#include <QString>
|
|
|
|
#include <KLocalizedString>
|
|
|
|
namespace FS
|
|
{
|
|
FileSystem::CommandSupportType lvm2_pv::m_GetUsed = FileSystem::cmdSupportNone;
|
|
FileSystem::CommandSupportType lvm2_pv::m_GetLabel = FileSystem::cmdSupportNone;
|
|
FileSystem::CommandSupportType lvm2_pv::m_Create = FileSystem::cmdSupportNone;
|
|
FileSystem::CommandSupportType lvm2_pv::m_Grow = FileSystem::cmdSupportNone;
|
|
FileSystem::CommandSupportType lvm2_pv::m_Shrink = FileSystem::cmdSupportNone;
|
|
FileSystem::CommandSupportType lvm2_pv::m_Move = FileSystem::cmdSupportNone;
|
|
FileSystem::CommandSupportType lvm2_pv::m_Check = FileSystem::cmdSupportNone;
|
|
FileSystem::CommandSupportType lvm2_pv::m_Copy = FileSystem::cmdSupportNone;
|
|
FileSystem::CommandSupportType lvm2_pv::m_Backup = FileSystem::cmdSupportNone;
|
|
FileSystem::CommandSupportType lvm2_pv::m_SetLabel = FileSystem::cmdSupportNone;
|
|
FileSystem::CommandSupportType lvm2_pv::m_UpdateUUID = FileSystem::cmdSupportNone;
|
|
FileSystem::CommandSupportType lvm2_pv::m_GetUUID = FileSystem::cmdSupportNone;
|
|
|
|
lvm2_pv::lvm2_pv(qint64 firstsector, qint64 lastsector, qint64 sectorsused, const QString& label) :
|
|
FileSystem(firstsector, lastsector, sectorsused, label, FileSystem::Lvm2_PV)
|
|
{
|
|
}
|
|
|
|
void lvm2_pv::init()
|
|
{
|
|
CommandSupportType lvmFound = findExternal(QStringLiteral("lvm")) ? cmdSupportFileSystem : cmdSupportNone;
|
|
|
|
m_Create = lvmFound;
|
|
m_Check = lvmFound;
|
|
m_Grow = lvmFound;
|
|
m_Shrink = lvmFound;
|
|
m_UpdateUUID = lvmFound;
|
|
m_GetUsed = lvmFound;
|
|
|
|
m_Move = (m_Check != cmdSupportNone) ? cmdSupportCore : cmdSupportNone;
|
|
|
|
m_GetLabel = cmdSupportCore;
|
|
m_Backup = cmdSupportCore;
|
|
m_GetUUID = cmdSupportCore;
|
|
|
|
m_GetLabel = cmdSupportNone;
|
|
m_Copy = cmdSupportNone; // Copying PV can confuse LVM
|
|
}
|
|
|
|
bool lvm2_pv::supportToolFound() const
|
|
{
|
|
return
|
|
m_GetUsed != cmdSupportNone &&
|
|
// m_GetLabel != cmdSupportNone &&
|
|
// m_SetLabel != cmdSupportNone &&
|
|
m_Create != cmdSupportNone &&
|
|
m_Check != cmdSupportNone &&
|
|
m_UpdateUUID != cmdSupportNone &&
|
|
m_Grow != cmdSupportNone &&
|
|
m_Shrink != cmdSupportNone &&
|
|
// m_Copy != cmdSupportNone &&
|
|
m_Move != cmdSupportNone &&
|
|
m_Backup != cmdSupportNone &&
|
|
m_GetUUID != cmdSupportNone;
|
|
}
|
|
|
|
FileSystem::SupportTool lvm2_pv::supportToolName() const
|
|
{
|
|
return SupportTool(QStringLiteral("lvm2"), QUrl(QStringLiteral("http://sourceware.org/lvm2/")));
|
|
}
|
|
|
|
qint64 lvm2_pv::maxCapacity() const
|
|
{
|
|
return Capacity::unitFactor(Capacity::Byte, Capacity::EiB);
|
|
}
|
|
|
|
qint64 lvm2_pv::readUsedCapacity(const QString& deviceNode) const
|
|
{
|
|
QString val = getpvField(QStringLiteral("pv_used"), deviceNode);
|
|
QString metadataOffset = getpvField(QStringLiteral("pe_start"), deviceNode);
|
|
return val.isEmpty() ? -1 : val.toLongLong() + metadataOffset.toLongLong();
|
|
}
|
|
|
|
bool lvm2_pv::check(Report& report, const QString& deviceNode) const
|
|
{
|
|
ExternalCommand cmd(report, QStringLiteral("lvm"), { QStringLiteral("pvck"), QStringLiteral("--verbose"), deviceNode });
|
|
return cmd.run(-1) && cmd.exitCode() == 0;
|
|
}
|
|
|
|
bool lvm2_pv::create(Report& report, const QString& deviceNode) const
|
|
{
|
|
ExternalCommand cmd(report, QStringLiteral("lvm"), { QStringLiteral("pvcreate"), QStringLiteral("--force"), deviceNode });
|
|
return cmd.run(-1) && cmd.exitCode() == 0;
|
|
}
|
|
|
|
bool lvm2_pv::remove(Report& report, const QString& deviceNode) const
|
|
{
|
|
// TODO: check if PV is a member of an exported VG
|
|
ExternalCommand cmd(report, QStringLiteral("lvm"), { QStringLiteral("pvremove"), QStringLiteral("--force"), QStringLiteral("--force"), QStringLiteral("--yes"), deviceNode });
|
|
return cmd.run(-1) && cmd.exitCode() == 0;
|
|
}
|
|
|
|
bool lvm2_pv::resize(Report& report, const QString& deviceNode, qint64 length) const
|
|
{
|
|
bool rval = true;
|
|
|
|
qint64 metadataOffset = getpvField(QStringLiteral("pe_start"), deviceNode).toLongLong();
|
|
|
|
qint64 lastPE = getTotalPE(deviceNode) - 1; // starts from 0
|
|
if (lastPE > 0) { // make sure that the PV is already in a VG
|
|
qint64 targetPE = (length - metadataOffset)/ getPESize(deviceNode) - 1; // starts from 0
|
|
if (targetPE < lastPE) { //shrinking FS
|
|
qint64 firstMovedPE = qMax(targetPE + 1, getAllocatedPE(deviceNode)); // starts from 1
|
|
ExternalCommand moveCmd(report,
|
|
QStringLiteral("lvm"), {
|
|
QStringLiteral("pvmove"),
|
|
QStringLiteral("--alloc"),
|
|
QStringLiteral("anywhere"),
|
|
deviceNode + QStringLiteral(":") + QString::number(firstMovedPE) + QStringLiteral("-") + QString::number(lastPE),
|
|
deviceNode + QStringLiteral(":") + QStringLiteral("0-") + QString::number(firstMovedPE - 1)
|
|
});
|
|
rval = moveCmd.run(-1) && (moveCmd.exitCode() == 0 || moveCmd.exitCode() == 5); // FIXME: exit code 5: NO data to move
|
|
}
|
|
}
|
|
|
|
ExternalCommand cmd(report, QStringLiteral("lvm"), {
|
|
QStringLiteral("pvresize"),
|
|
QStringLiteral("--yes"),
|
|
QStringLiteral("--setphysicalvolumesize"),
|
|
QString::number(length) + QStringLiteral("B"),
|
|
deviceNode });
|
|
return rval && cmd.run(-1) && cmd.exitCode() == 0;
|
|
}
|
|
|
|
bool lvm2_pv::updateUUID(Report& report, const QString& deviceNode) const
|
|
{
|
|
ExternalCommand cmd(report, QStringLiteral("lvm"), { QStringLiteral("pvchange"), QStringLiteral("--uuid"), deviceNode });
|
|
return cmd.run(-1) && cmd.exitCode() == 0;
|
|
}
|
|
|
|
QString lvm2_pv::readUUID(const QString& deviceNode) const
|
|
{
|
|
return getpvField(QStringLiteral("pv_uuid"), deviceNode);
|
|
}
|
|
|
|
bool lvm2_pv::mount(Report& report, const QString& deviceNode, const QString& mountPoint)
|
|
{
|
|
Q_UNUSED(report);
|
|
Q_UNUSED(deviceNode);
|
|
Q_UNUSED(mountPoint);
|
|
return false;
|
|
}
|
|
|
|
bool lvm2_pv::unmount(Report& report, const QString& deviceNode)
|
|
{
|
|
Q_UNUSED(deviceNode);
|
|
Q_UNUSED(report);
|
|
return false;
|
|
}
|
|
|
|
bool lvm2_pv::canMount(const QString & deviceNode, const QString & mountPoint) const
|
|
{
|
|
Q_UNUSED(mountPoint);
|
|
QString rval = getpvField(QStringLiteral("pv_in_use"), deviceNode); // this field return "used" when in use otherwise empty string
|
|
if (rval.isEmpty()) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool lvm2_pv::canUnmount(const QString& deviceNode) const
|
|
{
|
|
QString rval = getpvField(QStringLiteral("pv_in_use"), deviceNode);
|
|
if (rval.isEmpty()) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
qint64 lvm2_pv::getTotalPE(const QString& deviceNode)
|
|
{
|
|
QString val = getpvField(QStringLiteral("pv_pe_count"), deviceNode);
|
|
return val.isEmpty() ? -1 : val.toLongLong();
|
|
}
|
|
|
|
qint64 lvm2_pv::getTotalPE(const QStringList& deviceNodeList)
|
|
{
|
|
qint64 sum = 0;
|
|
for (QString deviceNode : deviceNodeList) {
|
|
qint64 totalPE = getTotalPE(deviceNode);
|
|
if (totalPE < 0) {
|
|
sum = -1;
|
|
break;
|
|
}
|
|
sum += totalPE;
|
|
}
|
|
return sum;
|
|
}
|
|
|
|
qint64 lvm2_pv::getFreePE(const QString& deviceNode)
|
|
{
|
|
return getTotalPE(deviceNode) - getAllocatedPE(deviceNode);
|
|
}
|
|
|
|
qint64 lvm2_pv::getFreePE(const QStringList& deviceNodeList)
|
|
{
|
|
qint64 sum = 0;
|
|
for (QString deviceNode :deviceNodeList) {
|
|
qint64 freePE = getFreePE(deviceNode);
|
|
if (freePE < 0) {
|
|
sum = -1;
|
|
break;
|
|
}
|
|
sum += freePE;
|
|
}
|
|
return sum;
|
|
}
|
|
|
|
qint64 lvm2_pv::getAllocatedPE(const QString& deviceNode)
|
|
{
|
|
QString val = getpvField(QStringLiteral("pv_pe_alloc_count"), deviceNode);
|
|
return val.isEmpty() ? -1 : val.toLongLong();
|
|
}
|
|
|
|
qint64 lvm2_pv::getAllocatedPE(const QStringList& deviceNodeList)
|
|
{
|
|
qint64 sum = 0;
|
|
for (QString deviceNode : deviceNodeList) {
|
|
qint64 allocatedPE = getAllocatedPE(deviceNode);
|
|
if (allocatedPE < 0) {
|
|
sum = -1;
|
|
break;
|
|
}
|
|
sum += allocatedPE;
|
|
}
|
|
return sum;
|
|
}
|
|
|
|
qint64 lvm2_pv::getPVSize(const QString& deviceNode)
|
|
{
|
|
QString val = getpvField(QStringLiteral("pv_size"), deviceNode);
|
|
return val.isEmpty() ? -1 : val.toLongLong();
|
|
}
|
|
|
|
qint64 lvm2_pv::getPVSize(const QStringList& deviceNodeList)
|
|
{
|
|
qint64 sum = 0;
|
|
for (QString deviceNode : deviceNodeList) {
|
|
qint64 pvsize = getPVSize(deviceNode);
|
|
if (pvsize < 0) {
|
|
sum = -1;
|
|
break;
|
|
}
|
|
sum += pvsize;
|
|
}
|
|
return sum;
|
|
}
|
|
|
|
qint64 lvm2_pv::getPESize(const QString& deviceNode)
|
|
{
|
|
QString val = getpvField(QStringLiteral("vg_extent_size"), deviceNode);
|
|
return val.isEmpty() ? -1 : val.toLongLong();
|
|
}
|
|
|
|
QString lvm2_pv::getpvField(const QString& fieldname, const QString& deviceNode)
|
|
{
|
|
QStringList args = { QStringLiteral("pvs"),
|
|
QStringLiteral("--foreign"),
|
|
QStringLiteral("--readonly"),
|
|
QStringLiteral("--noheadings"),
|
|
QStringLiteral("--units"),
|
|
QStringLiteral("B"),
|
|
QStringLiteral("--nosuffix"),
|
|
QStringLiteral("--options"),
|
|
fieldname };
|
|
if (!deviceNode.isEmpty()) {
|
|
args << deviceNode;
|
|
}
|
|
ExternalCommand cmd(QStringLiteral("lvm"), args);
|
|
if (cmd.run(-1) && cmd.exitCode() == 0) {
|
|
return cmd.output().trimmed();
|
|
}
|
|
return QString();
|
|
}
|
|
|
|
QString lvm2_pv::getVGName(const QString& deviceNode)
|
|
{
|
|
return getpvField(QStringLiteral("vg_name"), deviceNode);
|
|
}
|
|
|
|
const QStringList lvm2_pv::getFreePV()
|
|
{
|
|
QStringList rlist;
|
|
|
|
QString output = getpvField(QStringLiteral("pv_name"));
|
|
const QStringList pvList = output.split(QStringLiteral("\n"), QString::SkipEmptyParts);
|
|
for (QString pvnode : pvList) {
|
|
if (!isUsed(pvnode.trimmed())) {
|
|
rlist.append(pvnode.trimmed());
|
|
}
|
|
}
|
|
|
|
return rlist;
|
|
}
|
|
|
|
bool lvm2_pv::isUsed(const QString& deviceNode)
|
|
{
|
|
QString output = getpvField(QStringLiteral("pv_in_use"), deviceNode.trimmed());
|
|
if (output.trimmed() == QStringLiteral("used")) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
}
|