標籤:lv vg pv
1. ZZSRV2上的LVM配置1.1. 磁碟配置
# fdisk -lDisk /dev/sda: 21.5 GB, 21474836480 bytes, 41943040 sectorsUnits = sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk label type: dosDisk identifier: 0x00012974 Device Boot Start End Blocks Id System/dev/sda1 * 2048 1026047 512000 83 Linux/dev/sda2 1026048 41943039 20458496 8e Linux LVMDisk /dev/mapper/centos-swap: 2147 MB, 2147483648 bytes, 4194304 sectorsUnits = sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk /dev/mapper/centos-root: 18.8 GB, 18798870528 bytes, 36716544 sectorsUnits = sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytes添加100GB的磁碟。讓Linux系統掃描重新整理磁碟配置:# echo "- - -" > /sys/class/scsi_host/host0/scan# echo "- - -" > /sys/class/scsi_host/host1/scan# echo "- - -" > /sys/class/scsi_host/host2/scan# fdisk -l看到新的盤了Disk /dev/sdb: 107.4 GB, 107374182400 bytes, 209715200 sectorsUnits = sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytes
1.2. LVM配置
# fdisk /dev/sdb建立分區# fdisk -l /dev/sdbDisk /dev/sdb: 107.4 GB, 107374182400 bytes, 209715200 sectorsUnits = sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk label type: dosDisk identifier: 0x8dee9f3a Device Boot Start End Blocks Id System/dev/sdb1 2048 209715199 104856576 8e Linux LVM 建立PV# pvcreate /dev/sdb1 Physical volume "/dev/sdb1" successfully created建立VG# vgcreate DATAVG /dev/sdb1 Volume group "DATAVG" successfully created# vgdisplay DATAVG --- Volume group --- VG Name DATAVG System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 1 VG Access read/write VG Status resizable MAX LV 0 Cur LV 0 Open LV 0 Max PV 0 Cur PV 1 Act PV 1 VG Size 100.00 GiB PE Size 4.00 MiB Total PE 25599 Alloc PE / Size 0 / 0 Free PE / Size 25599 / 100.00 GiB VG UUID xxKwGK-FDbT-elLy-yU7A-gKfj-j3hc-7Cq76o# lvcreate -n LVSMB -L 40G DATAVG Logical volume "LVSMB" created# lvcreate -n LVFTP -L 30G DATAVG Logical volume "LVFTP" created查看VG是未使用PE數量# vgdisplay DATAVG --- Volume group --- VG Name DATAVG System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 3 VG Access read/write VG Status resizable MAX LV 0 Cur LV 2 Open LV 0 Max PV 0 Cur PV 1 Act PV 1 VG Size 100.00 GiB PE Size 4.00 MiB Total PE 25599 Alloc PE / Size 17920 / 70.00 GiB Free PE / Size 7679 / 30.00 GiB VG UUID xxKwGK-FDbT-elLy-yU7A-gKfj-j3hc-7Cq76o將所有未使用的PE全部分配給最後一個LV# lvcreate -n LVNFS -l 7679 DATAVG Logical volume "LVNFS" created# vgdisplay DATAVG --- Volume group --- VG Name DATAVG System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 4 VG Access read/write VG Status resizable MAX LV 0 Cur LV 3 Open LV 0 Max PV 0 Cur PV 1 Act PV 1 VG Size 100.00 GiB PE Size 4.00 MiB Total PE 25599 Alloc PE / Size 25599 / 100.00 GiB Free PE / Size 0 / 0 全部使用完了 VG UUID xxKwGK-FDbT-elLy-yU7A-gKfj-j3hc-7Cq76o# lvscan ACTIVE ‘/dev/DATAVG/LVSMB‘ [40.00 GiB] inherit ACTIVE ‘/dev/DATAVG/LVFTP‘ [30.00 GiB] inherit ACTIVE ‘/dev/DATAVG/LVNFS‘ [30.00 GiB] inherit ACTIVE ‘/dev/centos/swap‘ [2.00 GiB] inherit ACTIVE ‘/dev/centos/root‘ [17.51 GiB] inherit
1.3. 檔案系統配置
建立檔案系統
# mkfs.ext4 /dev/DATAVG/LVSMB# mkfs.ext4 /dev/DATAVG/LVFTP# mkfs.ext4 /dev/DATAVG/LVNFS建立Mount Point# mkdir /smb# mkdir /ftp# mkdir /nfs# vi /etc/fstab添加/dev/DATAVG/LVSMB /smb ext4 defaults 0 0/dev/DATAVG/LVFTP /ftp ext4 defaults 0 0/dev/DATAVG/LVNFS /nfs ext4 defaults 0 0測試一下# mount /smb/# mount /ftp# mount /nfs# mount..... /dev/mapper/DATAVG-LVSMB on /smb type ext4 (rw,relatime,data=ordered)/dev/mapper/DATAVG-LVFTP on /ftp type ext4 (rw,relatime,data=ordered)/dev/mapper/DATAVG-LVNFS on /nfs type ext4 (rw,relatime,data=ordered)
本文出自 “劉瓊@天道酬勤” 部落格,請務必保留此出處http://lqiong.blog.51cto.com/8170814/1559071
CentOS項目執行個體之五--LVM配置