2024年6月13日发(作者：戴采白)

1、查看VG属性

root@rzcs:/#vgdisplay-v/dev/vg02

---Volumegroups---

VGName/dev/vg02

VGWriteAccessread/write

VGStatusavailable

MaxLV2047

CurLV2

OpenLV2

CurSnapshotLV0

MaxPV2048

CurPV2

ActPV2

MaxPEperPV4800

VGDA4

PESize(Mbytes)64

Unshareunitsize(Kbytes)1024

TotalPE4800

AllocPE4799

Currentpre-allocatedPE0

FreePE1

TotalPVG0

TotalSparePVs0

TotalSparePVsinuse0

VGVersion2.2

VGMaxSize300g

VGMaxExtents4800

CurSnapshotCapacity0p

MaxSnapshotCapacity300g

可以看出，该VG最大只能300G，显然不能满足我们需求，此时即使使用

vgextend扩展也无用，因此需要修改VG的最大大小“VGMaxSize”

2、修改VG属性

命令和语法：

Usage:

Fordeactivatedversion1.0volumegroups,

vgmodify

[-v]

[-n]

[-r]

[-eMaxPhysicalExtents]

[-pMaxPhysicalVolumes]

[-lMaxLogicalVolumes]

VolumeGroupName

vgmodify-Bbootable

[-n]

[-r]

[-v]

[-eMaxPhysicalExtents]

[-pMaxPhysicalVolumes]

[-lMaxLogicalVolumes]

vgmodify-o

[-v]

[-r]

VolumeGroupName

vgmodify-o-Bbootable

[-v]

[-r]

vgmodify-CDLC_Size

[-r]

VolumeGroupNamepv_path

Foractivatedversion1.0volumegroups,

vgmodify-a

[-v]

[-n]

[-r]

[-eMaxPhysicalExtents]

[-pMaxPhysicalVolumes]

[-lMaxLogicalVolumes]

VolumeGroupName

vgmodify-a-Bbootable

[-n]

[-r]

[-v]

[-eMaxPhysicalExtents]

[-pMaxPhysicalVolumes]

[-lMaxLogicalVolumes]

vgmodify-a-o

[-v]

[-r]

VolumeGroupName

vgmodify-a-o-Bbootable

[-v]

[-r]

vgmodify-a-E

[-o]

[-v]

[-r]

VolumeGroupName[]

vgmodify-a-E

[-v]

[-r]

[-eMaxPhysicalExtents]

[-pMaxPhysicalVolumes]

[-lMaxLogicalVolumes]

VolumeGroupName[]

vgmodify-a-CDLC_Size

[-r]

VolumeGroupNamepv_path

Torecoveraphysicalvolumefromapreviousonlineorofflinevgmodifyfailure,

vgmodify-Rconf_

Todisplayatableofoptimizedpossiblevolumegroupsettingsforanactivatedordeactivatedversion1.0volumegr

oup,

vgmodify-t

[-v]

[-n]

VolumeGroupName

vgmodify-t-Bbootable

[-v]

[-n]

Foractivatedvolumegroupsversion2.0andhigher,

vgmodify-a-E

[-r]

VolumeGroupName[]

vgmodify-a-CDLC_Size

[-r]

VolumeGroupNamepv_path

vgmodify-a

[-E]

-SMax_VG_Size[-r]VolumeGroupName

我这里是2.2版本，因此使用如下命令：

root@rzcs:/#vgmodify-a-S1024G/dev/vg02

再次查看，已经修改成功

root@rzcs:/#vgdisplay/dev/vg02

---Volumegroups---

VGName/dev/vg02

VGWriteAccessread/write

VGStatusavailable

MaxLV2047

CurLV2

OpenLV2

CurSnapshotLV0

MaxPV2048

CurPV2

ActPV2

MaxPEperPV16384

VGDA4

PESize(Mbytes)64

Unshareunitsize(Kbytes)1024

TotalPE11998

AllocPE4799

Currentpre-allocatedPE0

FreePE7199

TotalPVG0

TotalSparePVs0

TotalSparePVsinuse0

VGVersion2.2

VGMaxSize1t

VGMaxExtents16384

CurSnapshotCapacity0p

MaxSnapshotCapacity1t

2024年6月13日发(作者：戴采白)

1、查看VG属性

root@rzcs:/#vgdisplay-v/dev/vg02

---Volumegroups---

VGName/dev/vg02

VGWriteAccessread/write

VGStatusavailable

MaxLV2047

CurLV2

OpenLV2

CurSnapshotLV0

MaxPV2048

CurPV2

ActPV2

MaxPEperPV4800

VGDA4

PESize(Mbytes)64

Unshareunitsize(Kbytes)1024

TotalPE4800

AllocPE4799

Currentpre-allocatedPE0

FreePE1

TotalPVG0

TotalSparePVs0

TotalSparePVsinuse0

VGVersion2.2

VGMaxSize300g

VGMaxExtents4800

CurSnapshotCapacity0p

MaxSnapshotCapacity300g

可以看出，该VG最大只能300G，显然不能满足我们需求，此时即使使用

vgextend扩展也无用，因此需要修改VG的最大大小“VGMaxSize”

2、修改VG属性

命令和语法：

Usage:

Fordeactivatedversion1.0volumegroups,

vgmodify

[-v]

[-n]

[-r]

[-eMaxPhysicalExtents]

[-pMaxPhysicalVolumes]

[-lMaxLogicalVolumes]

VolumeGroupName

vgmodify-Bbootable

[-n]

[-r]

[-v]

[-eMaxPhysicalExtents]

[-pMaxPhysicalVolumes]

[-lMaxLogicalVolumes]

vgmodify-o

[-v]

[-r]

VolumeGroupName

vgmodify-o-Bbootable

[-v]

[-r]

vgmodify-CDLC_Size

[-r]

VolumeGroupNamepv_path

Foractivatedversion1.0volumegroups,

vgmodify-a

[-v]

[-n]

[-r]

[-eMaxPhysicalExtents]

[-pMaxPhysicalVolumes]

[-lMaxLogicalVolumes]

VolumeGroupName

vgmodify-a-Bbootable

[-n]

[-r]

[-v]

[-eMaxPhysicalExtents]

[-pMaxPhysicalVolumes]

[-lMaxLogicalVolumes]

vgmodify-a-o

[-v]

[-r]

VolumeGroupName

vgmodify-a-o-Bbootable

[-v]

[-r]

vgmodify-a-E

[-o]

[-v]

[-r]

VolumeGroupName[]

vgmodify-a-E

[-v]

[-r]

[-eMaxPhysicalExtents]

[-pMaxPhysicalVolumes]

[-lMaxLogicalVolumes]

VolumeGroupName[]

vgmodify-a-CDLC_Size

[-r]

VolumeGroupNamepv_path

Torecoveraphysicalvolumefromapreviousonlineorofflinevgmodifyfailure,

vgmodify-Rconf_

Todisplayatableofoptimizedpossiblevolumegroupsettingsforanactivatedordeactivatedversion1.0volumegr

oup,

vgmodify-t

[-v]

[-n]

VolumeGroupName

vgmodify-t-Bbootable

[-v]

[-n]

Foractivatedvolumegroupsversion2.0andhigher,

vgmodify-a-E

[-r]

VolumeGroupName[]

vgmodify-a-CDLC_Size

[-r]

VolumeGroupNamepv_path

vgmodify-a

[-E]

-SMax_VG_Size[-r]VolumeGroupName

我这里是2.2版本，因此使用如下命令：

root@rzcs:/#vgmodify-a-S1024G/dev/vg02

再次查看，已经修改成功

root@rzcs:/#vgdisplay/dev/vg02

---Volumegroups---

VGName/dev/vg02

VGWriteAccessread/write

VGStatusavailable

MaxLV2047

CurLV2

OpenLV2

CurSnapshotLV0

MaxPV2048

CurPV2

ActPV2

MaxPEperPV16384

VGDA4

PESize(Mbytes)64

Unshareunitsize(Kbytes)1024

TotalPE11998

AllocPE4799

Currentpre-allocatedPE0

FreePE7199

TotalPVG0

TotalSparePVs0

TotalSparePVsinuse0

VGVersion2.2

VGMaxSize1t

VGMaxExtents16384

CurSnapshotCapacity0p

MaxSnapshotCapacity1t