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Code Pull Requests Releases Activity

Add support for reading LVM PV info

This commit is contained in:
Chantara Tith 2016-05-26 00:03:03 +07:00 committed by Andrius Štikonas
parent 0af98556ac
commit 6360260fae
2 changed files with 69 additions and 1 deletions
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63
src/fs/lvm2_pv.cpp
View File

@ -110,7 +110,7 @@ bool lvm2_pv::remove(Report& report, const QString& deviceNode) const
bool lvm2_pv::resize(Report& report, const QString& deviceNode, qint64 length) const
{
// TODO: check if the it is legal to reize
// TODO: check if the it is legal to resize
const QString len = QString::number(length / 512) + QStringLiteral("s");
ExternalCommand cmd(report, QStringLiteral("lvm"), { QStringLiteral("pvresize"), QStringLiteral("--yes"), QStringLiteral("--setphysicalvolumesize"), len, deviceNode });
@ -143,4 +143,65 @@ QString lvm2_pv::getVGName(const QString& deviceNode) //PV node
return QString();
}
qint64 lvm2_pv::getTotalPE(const QString& deviceNode) const {
ExternalCommand cmd( QStringLiteral("lvm"),
{ QStringLiteral("pvdisplay"), QStringLiteral("--verbose"), deviceNode });
if (cmd.run(-1) && cmd.exitCode() == 0) {
QRegularExpression re(QStringLiteral("Total PE\\h+(\\d+)"));
QRegularExpressionMatch totalPE = re.match(cmd.output());
if (totalPE.hasMatch())
return totalPE.captured(1).toLongLong();
}
return -1;
}
qint64 lvm2_pv::getFreePE(const QString& deviceNode) const {
ExternalCommand cmd( QStringLiteral("lvm"),
{ QStringLiteral("pvdisplay"), QStringLiteral("--verbose"), deviceNode });
if (cmd.run(-1) && cmd.exitCode() == 0) {
QRegularExpression re(QStringLiteral("Free PE\\h+(\\d+)"));
QRegularExpressionMatch freePE = re.match(cmd.output());
if (freePE.hasMatch())
return freePE.captured(1).toLongLong();
}
return -1;
}
qint64 lvm2_pv::getAllocatedPE(const QString& deviceNode) const {
ExternalCommand cmd( QStringLiteral("lvm"),
{ QStringLiteral("pvdisplay"), QStringLiteral("--verbose"), deviceNode });
if (cmd.run(-1) && cmd.exitCode() == 0) {
QRegularExpression re(QStringLiteral("Allocated PE\\h+(\\d+)"));
QRegularExpressionMatch allocatedPE = re.match(cmd.output());
if (allocatedPE.hasMatch())
return allocatedPE.captured(1).toLongLong();
}
return -1;
}
qint64 lvm2_pv::getPVSize(const QString& deviceNode) const {
ExternalCommand cmd( QStringLiteral("lvm"),
{ QStringLiteral("pvdisplay"), QStringLiteral("--verbose"), QStringLiteral("--units"), QStringLiteral("B"), deviceNode });
if (cmd.run(-1) && cmd.exitCode() == 0) {
QRegularExpression re(QStringLiteral("PV Size\\h+(\\d+)"));
QRegularExpressionMatch PVSize = re.match(cmd.output());
if (PVSize.hasMatch())
return PVSize.captured(1).toLongLong();
}
return -1;
}
qint64 lvm2_pv::getPESize(const QString& deviceNode) const {
ExternalCommand cmd( QStringLiteral("lvm"),
{ QStringLiteral("pvdisplay"), QStringLiteral("--verbose"), QStringLiteral("--units"), QStringLiteral("B"), deviceNode });
if (cmd.run(-1) && cmd.exitCode() == 0) {
QRegularExpression re(QStringLiteral("PE Size\\h+(\\d+)"));
QRegularExpressionMatch PESize = re.match(cmd.output());
if (PESize.hasMatch())
return PESize.captured(1).toLongLong();
}
return -1;
}
}

7
src/fs/lvm2_pv.h
View File

@ -52,6 +52,7 @@ public:
bool updateUUID(Report& report, const QString& deviceNode) const override;
bool canMount(const QString & deviceNode, const QString & mountPoint) const override;
CommandSupportType supportGetUsed() const override {
return m_GetUsed;
}
@ -93,6 +94,12 @@ public:
SupportTool supportToolName() const override;
bool supportToolFound() const override;
qint64 getTotalPE(const QString& deviceNode) const;
qint64 getFreePE(const QString& deviceNode) const;
qint64 getAllocatedPE(const QString& deviceNode) const;
qint64 getPESize(const QString& deviceNode) const; // return PE size in bytes
qint64 getPVSize(const QString& deviceNode) const; // return PV size in bytes
static QString getVGName(const QString& deviceNode);
public: