[HPUX] HP Unix pv,vg,lv操作

[root@testdb:/#] pvcreate /dev/rdsk/c2t1d4                  #使用的字元裝置
Physical volume "/dev/rdsk/c2t1d4" has been successfully created.

[root@testdb:/#] vgcreate vgora /dev/dsk/c2t1d4             #使用塊裝置
Increased the number of physical extents per physical volume to 50431.
vgcreate: Volume group "/dev/vgora" could not be created:
VGRA for the disk is too big for the specified parameters. Increase the
extent size or decrease max_PVs/max_LVs and try again.

[root@testdb:/#] diskinfo /dev/rdsk/c2t1d4
SCSI describe of /dev/rdsk/c2t1d4:
             vendor: HITACHI
         product id: DF600F
               type: direct access
               size: 206569472 Kbytes
   bytes per sector: 512

一個PE Size 預設大小是4M,so...4M*50431=201724M < 201728M (206569472/1024) 所以要增加PE的大小,設定PE Size=32M.

[root@testdb:/#] vgcreate -s 32 vgora /dev/dsk/c2t1d4
Increased the number of physical extents per physical volume to 6303.
Volume group "/dev/vgora" has been successfully created.
Volume Group configuration for /dev/vgora has been saved in /etc/lvmconf/vgora.conf

[root@testdb:/#] lvcreate -L 40G -n lvoracle vgora        #不能識別G.so..delete
[root@testdb:/#] lvcreate -L 80G -n lvoradata vgora
[root@testdb:/#] lvremove /dev/vgora/lvoracle
[root@testdb:/#] lvremove /dev/vgora/lvoradata
[root@testdb:/#] lvcreate -L 40960M -n lvoracle vgora
[root@testdb:/#] lvcreate -L 81920M -n lvoradata vgora
[root@testdb:/#] vgdisplay -v vgora                       #重新檢視資訊.
[root@testdb:/#] newfs -F vxfs /dev/vgora/lvoracle        #需要使用字元裝置的,就是一個字母帶r的.(帶r裸裝置使用,不帶是檔案系統使用的)
UX:vxfs newfs: ERROR: V-3-21623: /dev/vgora/lvoracle is not a character device
[root@testdb:/#] newfs -F vxfs /dev/vgora/rlvoracle
[root@testdb:/#] newfs -F vxfs /dev/vgora/rlvoradata
[root@testdb:/#] mkdir -p /oracle/testdb/oracle
[root@testdb:/#] mkdir -p /oracle/testdb/oradata
[root@testdb:/#] mount /dev/vgora/lvoracle /oracle/testdb/oracle
[root@testdb:/#] mount /dev/vgora/lvoradata /oracle/testdb/oradata
這個時候可以透過bdf檢視是否掛載.
如果想要系統系統掛載filesystem,需要在/etc/fstab中新增記錄.
[root@testdb:/#] vi /etc/fstab                             #新增如下內容.
/dev/vgora/lvoracle /oracle/testdb/oracle       vxfs delaylog 0 2
/dev/vgora/lvoradata /oracle/testdb/oradata     vxfs delaylog 0 2
[root@testdb:/#] mount -a

[root@testdb:/#] lvextend -L 92160M /dev/vgora/lvoradata     #增加lv大小
[root@testdb:/#] extendfs -F vxfs /dev/vgora/lvoradata       #filesystem不能線上操作.需要umount操作
UX:vxfs extendfs: ERROR: V-3-20144: /dev/vgora/lvoradata is mounted, cannot extend.
[root@testdb:/#] fsadm -F vxfs -b 92160M /oracle/testdb/oradata     #使用fsadm 線上操作.
UX:vxfs fsadm: INFO: V-3-25942: /dev/vgora/rlvoradata size increased from 83886080 sectors to 94371840 sectors

[root@testdb:/#] umount /oracle/testdb/oradata
[root@testdb:/#] lvreduce -L 81920M /dev/vgora/lvoradata
root@testdb:/#] mount /dev/vgora/lvoradata /oracle/testdb/oradata
UX:vxfs mount: ERROR: V-3-24706: /dev/vgora/lvoradata no such device or filesystem on it missing one or more devices
[root@testdb:/#] newfs -F vxfs /dev/vgora/rlvoradata        #只能這樣了.但是這樣裡面的資料都沒有了.
[root@testdb:/#] newfs -o largefiles -F vxfs /dev/vgora/rlvoradata        #不加-o 最大支援2G,加了之後支援128G.
[root@testdb:/#] mount -a

[root@testdb:/dev/vgasm#] pvcreate /dev/rdsk/c2t1d3
pvcreate: Could not perform LVM operation on VxVM disk "/dev/rdsk/c2t1d3".
[root@testdb:/dev/vgasm#] pvcreate -f /dev/rdsk/c2t1d3    #加上-f引數，強制執行
Physical volume "/dev/rdsk/c2t1d3" has been successfully created.
[root@testdb:/dev/vgasm#] vgextend vgora /dev/dsk/c2t1d3
[root@testdb:/dev/vgasm#] vgreduce vgora /dev/dsk/c2t1d3