LINUX硬盘磁盘LVS扩容
记一下记录，忘了好找某服务器硬盘没划分完，某个分区相当小，很浪费
# vgdisplay
--- Volume group ---
VG Name VolGroup00
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No11
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 6
Open LV 5
Max PV 0
Cur PV 2
Act PV 2
VG Size 836.34 GB
PE Size 32.00 MB
Total PE 26763
Alloc PE / Size 18238 / 569.94 GB
FreePE / Size 8525 / 266.41 GB
VG UUID GQxsHi-QnFz-54YO-Htzs-jwBp-n7t5-DoEv8R
###可以看到有266G的空闲空间
# df -h
文件系统 容量已用 可用 已用% 挂载点
/dev/mapper/VolGroup00-LogVol00
3.9G477M3.3G13% /
/dev/mapper/VolGroup00-LogVol05
252G2.7G239G 2% /home
/dev/mapper/VolGroup00-LogVol04
3.9G730M3.0G20% /var
/dev/mapper/VolGroup00-LogVol03
35G221M 33G 1% /tmp
/dev/mapper/VolGroup00-LogVol02
256G9.5G234G 4% /usr
/dev/sda3 190M 15M166M 9% /boot
tmpfs 7.9G 07.9G 0% /dev/shm
### 目标是/home目录，准备扩它。其他也可以扩，看自己需要。
# umount /dev/mapper/VolGroup00-LogVol05
umount: /home: device is busy
umount: /home: device is busy
###卸载home目录所在逻辑卷，但是有进程在用
# fuser -m /dev/mapper/VolGroup00-LogVol05
/dev/mapper/VolGroup00-LogVol05:4996c4997c
###看谁在用它
# kill 4996 4997
-bash: kill: (22338) - 没有那个进程
-bash: kill: (22340) - 没有那个进程
###干掉
# fuser -m /dev/mapper/VolGroup00-LogVol05
### 嗯，没了
# umount /dev/mapper/VolGroup00-LogVol05
###这下卸载了
# lvextend -l +8525 /dev/VolGroup00/LogVol05
Extending logical volume LogVol05 to 526.41 GB
Logical volume LogVol05 successfully resized
###扩展8525个单位，从vgdisplay看到的最大了。也可以用-L 参数扩充具体的大小如lvextend -L+266G /dev/VolGroup00/LogVol05
# resize2fs /dev/VolGroup00/LogVol05
resize2fs 1.39 (29-May-2006)
Please run 'e2fsck -f /dev/VolGroup00/LogVol05' first.
###挂在钱要重新改变尺寸才真正生效，噢，碰到一个问题，要先检查一下磁盘。
# e2fsck -f /dev/VolGroup00/LogVol05
e2fsck 1.39 (29-May-2006)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
/dev/VolGroup00/LogVol05: 30956/68157440 files (0.8% non-contiguous), 2819130/68157440 blocks
###查吧，花点时间而已，约1分钟
# resize2fs /dev/VolGroup00/LogVol05
resize2fs 1.39 (29-May-2006)
Resizing the filesystem on /dev/VolGroup00/LogVol05 to 137994240 (4k) blocks.
The filesystem on /dev/VolGroup00/LogVol05 is now 137994240 blocks long.
###改大小成功
# mount /dev/VolGroup00/LogVol05
###挂上啦
# df -h
文件系统 容量已用 可用 已用% 挂载点
/dev/mapper/VolGroup00-LogVol00
3.9G477M3.3G13% /
/dev/mapper/VolGroup00-LogVol04
3.9G730M3.0G20% /var
/dev/mapper/VolGroup00-LogVol03
35G221M 33G 1% /tmp
/dev/mapper/VolGroup00-LogVol02
256G9.5G234G 4% /usr
/dev/sda3 190M 15M166M 9% /boot
tmpfs 7.9G 07.9G 0% /dev/shm
/dev/mapper/VolGroup00-LogVol05
510G2.7G492G 1% /home
###哈，扩容成功。
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