查看有哪些iscsi通道
ls /sys/class/scsi_host/
扫描
echo “- – -” > /sys/class/scsi_host/host0/scan
echo “- – -” > /sys/class/scsi_host/host1/scan
echo “- – -” > /sys/class/scsi_host/host2/scan
将新磁盘转换为pv
pvcreate /dev/sdb
扩容vg
[root@master scripts]# vgs
VG #PV #LV #SN Attr VSize VFree
vg1 1 1 0 wz–n- 75.89g 0
[root@master scripts]# vgextend vg1 /dev/sdb
Volume group “vg1″ successfully extended
[root@master scripts]# vgs
VG #PV #LV #SN Attr VSize VFree
vg1 2 1 0 wz–n- 155.89g 80.00g
查看vg总共有多少空间可以给lv进行扩容
[root@master scripts]# vgdisplay
— Volume group —
VG Name vg1
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 3
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 2
Act PV 2
VG Size 155.89 GiB
PE Size 4.00 MiB
Total PE 39908
Alloc PE / Size 19429 / 75.89 GiB
Free PE / Size 20479 / 80.00 GiB
VG UUID 3vW0Mn-TT2t-gyEI-Buq6-eBh5-99ZL-rgyTGT
扩容lv 可以使用的PE数量为 20479
[root@master scripts]# lvextend -l +20479 /dev/vg1/lv1
Extending logical volume lv1 to 155.89 GiB
Logical volume lv1 successfully resized
扩容文件系统
resize2fs /dev/vg1/lv1
