596 lines
18 KiB
C++
596 lines
18 KiB
C++
/*
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SPDX-FileCopyrightText: 2018 Caio Jordão Carvalho <caiojcarvalho@gmail.com>
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SPDX-License-Identifier: GPL-3.0-or-later
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*/
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#include "softwareraid.h"
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#include "backend/corebackend.h"
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#include "backend/corebackendmanager.h"
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#include "core/partition.h"
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#include "core/volumemanagerdevice_p.h"
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#include "fs/filesystem.h"
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#include "fs/filesystemfactory.h"
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#include "ops/createpartitiontableoperation.h"
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#include "util/externalcommand.h"
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#include <utility>
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#include <KLocalizedString>
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#include <QFile>
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#include <QRegularExpression>
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#define d_ptr std::static_pointer_cast<SoftwareRAIDPrivate>(d)
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QString SoftwareRAID::s_raidConfigurationFile = QString();
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class SoftwareRAIDPrivate : public VolumeManagerDevicePrivate
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{
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public:
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qint32 m_raidLevel;
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qint64 m_chunkSize;
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qint64 m_totalChunk;
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qint64 m_arraySize;
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QString m_UUID;
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QStringList m_devicePathList;
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QStringList m_partitionPathList;
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SoftwareRAID::Status m_status;
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};
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SoftwareRAID::SoftwareRAID(const QString& name, SoftwareRAID::Status status, const QString& iconName)
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: VolumeManagerDevice(std::make_shared<SoftwareRAIDPrivate>(),
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name,
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(QStringLiteral("/dev/") + name),
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status == SoftwareRAID::Status::Inactive ? 0 : getChunkSize(QStringLiteral("/dev/") + name),
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status == SoftwareRAID::Status::Inactive ? 0 : getTotalChunk(QStringLiteral("/dev/") + name),
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iconName,
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Device::Type::SoftwareRAID_Device)
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{
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d_ptr->m_raidLevel = getRaidLevel(deviceNode());
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d_ptr->m_chunkSize = logicalSize();
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d_ptr->m_totalChunk = totalLogical();
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d_ptr->m_arraySize = getArraySize(deviceNode());
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d_ptr->m_UUID = getUUID(deviceNode());
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d_ptr->m_devicePathList = getDevicePathList(deviceNode());
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d_ptr->m_status = status;
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initPartitions();
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}
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const QStringList SoftwareRAID::deviceNodes() const
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{
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return d_ptr->m_devicePathList;
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}
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const QStringList& SoftwareRAID::partitionNodes() const
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{
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return d_ptr->m_partitionPathList;
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}
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qint64 SoftwareRAID::partitionSize(QString &partitionPath) const
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{
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Q_UNUSED(partitionPath)
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return 0;
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}
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bool SoftwareRAID::growArray(Report &report, const QStringList &devices)
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{
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Q_UNUSED(report)
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Q_UNUSED(devices)
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return false;
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}
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bool SoftwareRAID::shrinkArray(Report &report, const QStringList &devices)
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{
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Q_UNUSED(report)
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Q_UNUSED(devices)
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return false;
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}
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QString SoftwareRAID::prettyName() const
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{
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QString raidInfo;
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if (status() == SoftwareRAID::Status::Active)
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raidInfo = xi18nc("@item:inlistbox [RAID level]", " [RAID %1]", raidLevel());
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else if (status() == SoftwareRAID::Status::Recovery)
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raidInfo = xi18nc("@item:inlistbox [RAID level - Recovering]", " [RAID %1 - Recovering]", raidLevel());
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else if (status() == SoftwareRAID::Status::Resync)
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raidInfo = xi18nc("@item:inlistbox [RAID level - Resyncing]", " [RAID %1 - Resyncing]", raidLevel());
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else
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raidInfo = QStringLiteral(" [RAID]");
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return VolumeManagerDevice::prettyName() + raidInfo;
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}
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bool SoftwareRAID::operator ==(const Device& other) const
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{
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bool equalDeviceNode = Device::operator ==(other);
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if (other.type() == Device::Type::SoftwareRAID_Device) {
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const SoftwareRAID& raid = static_cast<const SoftwareRAID&>(other);
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if (!equalDeviceNode)
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return raid.uuid() == uuid();
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}
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return equalDeviceNode;
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}
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qint32 SoftwareRAID::raidLevel() const
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{
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return d_ptr->m_raidLevel;
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}
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qint64 SoftwareRAID::chunkSize() const
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{
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return d_ptr->m_chunkSize;
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}
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qint64 SoftwareRAID::totalChunk() const
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{
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return d_ptr->m_totalChunk;
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}
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qint64 SoftwareRAID::arraySize() const
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{
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return d_ptr->m_arraySize;
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}
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QString SoftwareRAID::uuid() const
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{
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return d_ptr->m_UUID;
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}
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SoftwareRAID::Status SoftwareRAID::status() const
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{
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return d_ptr->m_status;
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}
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void SoftwareRAID::setStatus(SoftwareRAID::Status status)
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{
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d_ptr->m_status = status;
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}
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void SoftwareRAID::scanSoftwareRAID(QList<Device*>& devices)
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{
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QStringList availableInConf;
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QString config = getRAIDConfiguration();
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if (!config.isEmpty()) {
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QRegularExpression re(QStringLiteral("([\\t\\r\\n\\f\\s]|INACTIVE-)ARRAY \\/dev\\/([\\/\\w-]+)"));
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QRegularExpressionMatchIterator i = re.globalMatch(config);
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while (i.hasNext()) {
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QRegularExpressionMatch reMatch = i.next();
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QString deviceName = reMatch.captured(2).trimmed();
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availableInConf << deviceName;
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}
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}
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QFile mdstat(QStringLiteral("/proc/mdstat"));
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if (mdstat.open(QIODevice::ReadOnly)) {
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QTextStream stream(&mdstat);
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QString content = stream.readAll();
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mdstat.close();
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QRegularExpression re(QStringLiteral("md([\\/\\w]+)\\s+:\\s+([\\w]+)"));
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QRegularExpressionMatchIterator i = re.globalMatch(content);
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while (i.hasNext()) {
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QRegularExpressionMatch reMatch = i.next();
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QString deviceNode = QStringLiteral("/dev/md") + reMatch.captured(1).trimmed();
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QString status = reMatch.captured(2).trimmed();
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SoftwareRAID* d = static_cast<SoftwareRAID *>(CoreBackendManager::self()->backend()->scanDevice(deviceNode));
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// Just to prevent segfault in some case
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if (d == nullptr)
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continue;
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const QStringList constAvailableInConf = availableInConf;
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for (const QString& path : constAvailableInConf)
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if (getUUID(QStringLiteral("/dev/") + path) == d->uuid())
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availableInConf.removeAll(path);
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QStringList partitionNodes;
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if (d->partitionTable() != nullptr)
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for (const Partition *p : d->partitionTable()->children())
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partitionNodes << p->partitionPath();
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d->setPartitionNodes(partitionNodes);
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for (const Device* dev : std::as_const(devices)) {
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if (dev->partitionTable()) {
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for (const Partition* p : dev->partitionTable()->children())
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if (getRaidArrayName(p->deviceNode()) == d->deviceNode())
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d->physicalVolumes() << p;
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}
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}
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devices << d;
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if (status == QStringLiteral("inactive"))
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d->setStatus(SoftwareRAID::Status::Inactive);
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if (d->raidLevel() > 0) {
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QRegularExpression reMirrorStatus(d->name() + QStringLiteral("\\s+:\\s+(.*\\n\\s+)+\\[[=>.]+\\]\\s+(resync|recovery)"));
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QRegularExpressionMatch reMirrorStatusMatch = reMirrorStatus.match(content);
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if (reMirrorStatusMatch.hasMatch()) {
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if (reMirrorStatusMatch.captured(2) == QStringLiteral("resync"))
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d->setStatus(SoftwareRAID::Status::Resync);
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else if (reMirrorStatusMatch.captured(2) == QStringLiteral("recovery"))
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d->setStatus(SoftwareRAID::Status::Recovery);
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}
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}
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}
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}
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for (const QString& name : std::as_const(availableInConf)) {
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SoftwareRAID *raidDevice = new SoftwareRAID(name, SoftwareRAID::Status::Inactive);
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devices << raidDevice;
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}
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}
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qint32 SoftwareRAID::getRaidLevel(const QString &path)
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{
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QString output = getDetail(path);
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if (!output.isEmpty()) {
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QRegularExpression re(QStringLiteral("Raid Level :\\s+\\w+(\\d+)"));
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QRegularExpressionMatch reMatch = re.match(output);
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if (reMatch.hasMatch())
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return reMatch.captured(1).toInt();
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}
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return -1;
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}
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qint64 SoftwareRAID::getChunkSize(const QString &path)
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{
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if (getRaidLevel(path) == 1) {
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QStringList devices = getDevicePathList(path);
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if (!devices.isEmpty()) {
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QString device = devices[0];
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// Look sector size for the first device/partition on the list, as RAID 1 is composed by mirrored devices
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ExternalCommand sectorSize(QStringLiteral("blockdev"), { QStringLiteral("--getss"), device });
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if (sectorSize.run(-1) && sectorSize.exitCode() == 0)
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return sectorSize.output().trimmed().toLongLong();
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}
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}
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else {
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QString output = getDetail(path);
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if (!output.isEmpty()) {
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QRegularExpression re(QStringLiteral("Chunk Size :\\s+(\\d+)"));
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QRegularExpressionMatch reMatch = re.match(output);
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if (reMatch.hasMatch())
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return reMatch.captured(1).toLongLong();
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}
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}
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return -1;
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}
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qint64 SoftwareRAID::getTotalChunk(const QString &path)
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{
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return getArraySize(path) / getChunkSize(path);
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}
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qint64 SoftwareRAID::getArraySize(const QString &path)
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{
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QString output = getDetail(path);
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if (!output.isEmpty()) {
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QRegularExpression re(QStringLiteral("Array Size :\\s+(\\d+)"));
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QRegularExpressionMatch reMatch = re.match(output);
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if (reMatch.hasMatch())
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return reMatch.captured(1).toLongLong() * 1024;
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}
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return -1;
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}
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QString SoftwareRAID::getUUID(const QString &path)
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{
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QString output = getDetail(path);
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if (!output.isEmpty()) {
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QRegularExpression re(QStringLiteral("UUID :\\s+([\\w:]+)"));
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QRegularExpressionMatch reMatch = re.match(output);
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if (reMatch.hasMatch())
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return reMatch.captured(1);
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}
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// If UUID was not found in detail output, it should be searched in config file
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QString config = getRAIDConfiguration();
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if (!config.isEmpty()) {
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QRegularExpression re(QStringLiteral("([\\t\\r\\n\\f\\s]|INACTIVE-)ARRAY \\/dev\\/md([\\/\\w-]+)(.*)"));
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QRegularExpressionMatchIterator i = re.globalMatch(config);
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while (i.hasNext()) {
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QRegularExpressionMatch reMatch = i.next();
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QString deviceNode = QStringLiteral("/dev/md") + reMatch.captured(2).trimmed();
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QString otherInfo = reMatch.captured(3).trimmed();
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// Consider device node as name=host:deviceNode when the captured device node string has '-' character
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// It happens when user have included the device to config file using 'mdadm --examine --scan'
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if (deviceNode.contains(QLatin1Char('-'))) {
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QRegularExpression reName(QStringLiteral("name=[\\w:]+\\/dev\\/md\\/([\\/\\w]+)"));
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QRegularExpressionMatch nameMatch = reName.match(otherInfo);
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if (nameMatch.hasMatch())
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deviceNode = nameMatch.captured(1);
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}
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if (deviceNode == path) {
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QRegularExpression reUUID(QStringLiteral("(UUID=|uuid=)([\\w:]+)"));
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QRegularExpressionMatch uuidMatch = reUUID.match(otherInfo);
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if (uuidMatch.hasMatch())
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return uuidMatch.captured(2);
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}
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}
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}
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return QString();
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}
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QStringList SoftwareRAID::getDevicePathList(const QString &path)
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{
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QStringList result;
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QString detail = getDetail(path);
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if (!detail.isEmpty()) {
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QRegularExpression re(QStringLiteral("\\s+\\/dev\\/(\\w+)"));
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QRegularExpressionMatchIterator i = re.globalMatch(detail);
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while (i.hasNext()) {
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QRegularExpressionMatch match = i.next();
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QString device = QStringLiteral("/dev/") + match.captured(1);
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if (device != path)
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result << device;
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}
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}
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return result;
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}
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bool SoftwareRAID::isRaidPath(const QString &devicePath)
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{
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return !getDetail(devicePath).isEmpty();
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}
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bool SoftwareRAID::createSoftwareRAID(Report &report,
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const QString &name,
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const QStringList devicePathList,
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const qint32 raidLevel,
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const qint32 chunkSize)
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{
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QString path = QStringLiteral("/dev/") + name;
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QStringList args = { QStringLiteral("--create"), path,
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QStringLiteral("--level=") + QString::number(raidLevel),
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QStringLiteral("--chunk=") + QString::number(chunkSize),
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QStringLiteral("--raid-devices=") + QString::number(devicePathList.size()) };
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for (const QString &p : std::as_const(devicePathList)) {
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eraseDeviceMDSuperblock(p);
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args << p;
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}
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ExternalCommand cmd(report, QStringLiteral("mdadm"), args);
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cmd.write(QByteArrayLiteral("y"));
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if (!cmd.run(-1) || cmd.exitCode() != 0)
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return false;
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if (updateConfigurationFile(path))
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qDebug() << QStringLiteral("Updated RAID config: ") + path;
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return true;
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}
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bool SoftwareRAID::deleteSoftwareRAID(Report &report,
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SoftwareRAID &raidDevice)
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{
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// We need raid activated to erase its partition table
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if (assembleSoftwareRAID(raidDevice.deviceNode()))
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raidDevice.setStatus(SoftwareRAID::Status::Active); // check this behaviour on mirror devices during resync
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if (raidDevice.status() == SoftwareRAID::Status::Active) {
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// Erasing device's partition table
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if (raidDevice.partitionTable() != nullptr) {
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CreatePartitionTableOperation updatePartitionTable(raidDevice, raidDevice.partitionTable()->type());
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if (!updatePartitionTable.execute(report))
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return false;
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}
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stopSoftwareRAID(report, raidDevice.deviceNode());
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}
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for (const QString& path : raidDevice.deviceNodes())
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eraseDeviceMDSuperblock(path);
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QString config = getRAIDConfiguration();
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QStringList lines = config.split(QLatin1Char('\n'));
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QString contentUpdated = QStringLiteral("\"");
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for (const QString line : lines)
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if (!line.isEmpty() && !line.contains(raidDevice.uuid()))
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contentUpdated += line + QLatin1Char('\n');
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contentUpdated += QLatin1Char('\"');
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ExternalCommand cmd(QStringLiteral("/usr/") + QStringLiteral(LIBEXECDIRPATH) + QStringLiteral("/kpmcore_mdadmupdateconf"),
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{ QStringLiteral("--write"), contentUpdated, raidConfigurationFilePath() });
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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bool SoftwareRAID::assembleSoftwareRAID(const QString& deviceNode)
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{
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ExternalCommand cmd(QStringLiteral("mdadm"),
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{ QStringLiteral("--assemble"), QStringLiteral("--scan"), deviceNode,
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QStringLiteral("--config=") + raidConfigurationFilePath() });
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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bool SoftwareRAID::stopSoftwareRAID(Report& report, const QString& deviceNode)
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{
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if (!isRaidPath(deviceNode))
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return false;
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ExternalCommand cmd(report, QStringLiteral("mdadm"),
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{ QStringLiteral("--manage"), QStringLiteral("--stop"), deviceNode });
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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bool SoftwareRAID::reassembleSoftwareRAID(Report& report, const QString &deviceNode)
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{
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// TODO: Include report
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return stopSoftwareRAID(report, deviceNode) && assembleSoftwareRAID(deviceNode);
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}
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QString SoftwareRAID::getRaidArrayName(const QString &partitionPath)
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{
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ExternalCommand cmd(QStringLiteral("mdadm"),
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{ QStringLiteral("--misc"), QStringLiteral("--query"), partitionPath });
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if (cmd.run(-1) && cmd.exitCode() == 0) {
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QRegularExpression ex(QStringLiteral("device active raid\\d+\\s([\\/\\w]+)."));
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QRegularExpressionMatch match = ex.match(cmd.output());
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if (match.hasMatch())
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return match.captured(1);
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}
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return QString();
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}
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void SoftwareRAID::initPartitions()
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{
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}
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qint64 SoftwareRAID::mappedSector(const QString &partitionPath, qint64 sector) const
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{
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Q_UNUSED(partitionPath)
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Q_UNUSED(sector)
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return -1;
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}
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bool SoftwareRAID::eraseDeviceMDSuperblock(const QString &path)
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{
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ExternalCommand cmd(QStringLiteral("mdadm"),
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{ QStringLiteral("--misc"), QStringLiteral("--zero-superblock"), path});
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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bool SoftwareRAID::updateConfigurationFile(const QString &path)
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{
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ExternalCommand cmd(QStringLiteral("/usr/") + QStringLiteral(LIBEXECDIRPATH) + QStringLiteral("/kpmcore_mdadmupdateconf"),
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{ QStringLiteral("--append"), path, raidConfigurationFilePath() });
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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QString SoftwareRAID::getDetail(const QString &path)
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{
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ExternalCommand cmd(QStringLiteral("mdadm"),
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{ QStringLiteral("--misc"), QStringLiteral("--detail"), path });
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return (cmd.run(-1) && cmd.exitCode() == 0) ? cmd.output() : QString();
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}
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QString SoftwareRAID::getRAIDConfiguration()
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{
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QFile config(raidConfigurationFilePath());
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if (!config.open(QIODevice::ReadOnly))
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return QString();
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QTextStream stream(&config);
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QString result = stream.readAll();
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config.close();
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return result;
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}
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QString SoftwareRAID::getDeviceInformation(const QString &deviceName)
|
|
{
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|
ExternalCommand cmd(QStringLiteral("mdadm"),
|
|
{ QStringLiteral("--misc"), QStringLiteral("--detail"), QStringLiteral("--scan"), deviceName });
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|
|
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// TODO: Get only information about the device line.
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|
// Because if there is any error on config file, it will print more information than needed.
|
|
return (cmd.run(-1) && cmd.exitCode() == 0) ? cmd.output() : QString();
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|
}
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|
|
|
void SoftwareRAID::setRaidConfigurationFilePath(const QString &filePath)
|
|
{
|
|
s_raidConfigurationFile = filePath;
|
|
}
|
|
|
|
QString SoftwareRAID::raidConfigurationFilePath()
|
|
{
|
|
if (s_raidConfigurationFile.isEmpty())
|
|
s_raidConfigurationFile = getDefaultRaidConfigFile();
|
|
return s_raidConfigurationFile;
|
|
}
|
|
|
|
QString SoftwareRAID::getDefaultRaidConfigFile()
|
|
{
|
|
if (QFile::exists(QStringLiteral("/etc/mdadm.conf")))
|
|
return QStringLiteral("/etc/mdadm.conf");
|
|
else if (QFile::exists(QStringLiteral("/etc/mdadm/mdadm.conf")))
|
|
return QStringLiteral("/etc/mdadm/mdadm.conf");
|
|
return QString();
|
|
}
|
|
|
|
bool SoftwareRAID::failPV(Report& report, const QString& devicePath, const QString& physicalVolume)
|
|
{
|
|
ExternalCommand cmd(QStringLiteral("mdadm"),
|
|
{ QStringLiteral("--manage"), QStringLiteral("--fail"), devicePath, physicalVolume });
|
|
|
|
return cmd.run(-1) && cmd.exitCode() == 0;
|
|
}
|
|
|
|
bool SoftwareRAID::removePV(Report& report, const QString& devicePath, const QString& physicalVolume)
|
|
{
|
|
failPV(report, devicePath, physicalVolume);
|
|
|
|
ExternalCommand cmd(QStringLiteral("mdadm"),
|
|
{ QStringLiteral("--manage"), QStringLiteral("--remove"), devicePath, physicalVolume });
|
|
|
|
return cmd.run(-1) && cmd.exitCode() == 0;
|
|
}
|
|
|
|
void SoftwareRAID::setPartitionNodes(const QStringList& partitionNodes)
|
|
{
|
|
d_ptr->m_partitionPathList = partitionNodes;
|
|
}
|