需求
1.歸檔日志刷得太快,經常把空間擠爆.
2.Oracle數據庫表空間需要擴容
解決方案
1.先做重要數據備份
2.進行文件系統擴容
步驟
1. df -g 查找出/u01 對應的VG卷 VOLUME GROUP:
# df -g
Filesystem GB blocks Free %Used Iused %Iused Mounted on
..
/dev/fslv00 60.00 3.95 94% 550567 36% /u01
# lslv fslv00
LOGICAL VOLUME: fslv00 VOLUME GROUP: rootvg
LV IDENTIFIER: 00f8d67e00004c000000014545274d99.13 PERMISSION: read/write
VG STATE: active/complete LV STATE: opened/syncd
TYPE: jfs2 WRITE VERIFY: off
MAX LPs: 1024 PP SIZE: 128 megabyte(s)
COPIES: 1 SCHED POLICY: parallel
LPs: 480 PPs: 480
STALE PPs: 0 BB POLICY: relocatable
INTER-POLICY: minimum RELOCATABLE: yes
INTRA-POLICY: middle UPPER BOUND: 32
MOUNT POINT: /u01 LABEL: /u01
MIRROR WRITE CONSISTENCY: on/ACTIVE
EACH LP COPY ON A SEPARATE PV ?: yes
Serialize IO ?: NO
INFINITE RETRY: no
2.查看rootvg的FREE PPs:
# lsvg rootvg
VOLUME GROUP: rootvg VG IDENTIFIER: 00f8d67e00004c000000014545274d99
VG STATE: active PP SIZE: 128 megabyte(s)
VG PERMISSION: read/write TOTAL PPs: 799 (102272 megabytes)
MAX LVs: 256 FREE PPs: 10 (1280 megabytes)
LVs: 13 USED PPs: 789 (100992 megabytes)
OPEN LVs: 12 QUORUM: 2 (Enabled)
TOTAL PVs: 1 VG DESCRIPTORS: 2
STALE PVs: 0 STALE PPs: 0
ACTIVE PVs: 1 AUTO ON: yes
MAX PPs per VG: 32512
MAX PPs per PV: 1016 MAX PVs: 32
LTG size (Dynamic): 256 kilobyte(s) AUTO SYNC: no
HOT SPARE: no BB POLICY: relocatable
PV RESTRICTION: none INFINITE RETRY: no
PP SIZE(PP單位)
FREE PPs(PP塊數)
FREE PPs: 10 (1280 megabytes) 可以看到只剩下1個G了
3.發現空間不足,進行磁盤擴展
3.1刷新磁盤(若果添加了物理磁盤,需要刷新一下)
# cfgmgr
cfgmgr命令詳見
http://blog.sina.com.cn/s/blog_5a2405d10100lbxy.html
3.2查看磁盤使用情況
# lspv
hdisk0 00f8d67e45274d2c rootvg active
hdisk1 none None
hdisk2 none None
hdisk3 none None
hdisk4 none None
hdisk5 none None
hdisk6 none None
hdisk7 none None
hdisk8 none None
hdisk9 none None
hdisk10 none None
hdisk11 none None
hdisk12 none None
hdisk13 none None
hdisk14 none None
hdisk15 none None
hdisk16 none None
hdisk17 none None
hdisk18 00f8d67efa51a04f oggvg active
hdisk19 00f8d67f77eb5875 None
hdisk20 00f8d67e3106babe datavg active
hdisk21 00f8d67ee9fbaac8 oggvg active
hdisk22 00f8d67fa805f48a None
hdisk23 none None
.
.
注:查看磁盤空間大小
#bootinfo -s hdisk1
3.3進行擴展,發現報錯
#extendvg rootvg hdisk2 hdisk3
0516-1254 extendvg: Changing the PVID in the ODM.
0516-1254 extendvg: Changing the PVID in the ODM.
0516-1162 extendvg: Warning, The Physical Partition Size of 128 requires the
creation of 1093 partitions for hdisk2. The limitation for volume group
rootvg is 1016 physical partitions per physical volume. Use chvg command
with -t option to attempt to change the maximum Physical Partitions per
Physical volume for this volume group.
0516-1162 extendvg: Warning, The Physical Partition Size of 128 requires the
creation of 1093 partitions for hdisk3. The limitation for volume group
rootvg is 1016 physical partitions per physical volume. Use chvg command
with -t option to attempt to change the maximum Physical Partitions per
Physical volume for this volume group.
0516-792 extendvg: Unable to extend volume group.#chdev -l hdisk2 -a pv=yes
#chdev -l hdisk3 -a pv=yes
#chvg -t rootvg
0516-1187 chvg: Volume group not changed. Either the volume group rootvg
has the specified factor value or is at proper maximum physical partitions
per physical volume limit already.
0516-732 chvg: Unable to change volume group rootvg.
//因為PP數目已經達到上限
3.4刷新pp
#chvg -t 2 rootvg
0516-1164 chvg: Volume group rootvg changed. With given characteristics rootvg
can include upto 16 physical volumes with 2032 physical partitions each.//數字2表示2×1016個PP
3.5再次進行擴展
#extendvg rootvg hdisk2 hdisk3
3.6查看磁盤使用情況,發現已經在使用
#lspv
hdisk0 0007df58fb3e71d4 rootvg active
hdisk1 00009d03638bf367 rootvg active
hdisk2 00009d034caa708d rootvg active
hdisk3 00009d034caa7219 rootvg active
3.7查看vg卷的情況,確認已經擴容
#lsvg rootvg
VOLUME GROUP: rootvg VG IDENTIFIER: 0007df580000d70000000113fb3e72ce
VG STATE: active PP SIZE: 128 megabyte(s)
VG PERMISSION: read/write TOTAL PPs: 3278 (419584 megabytes)
MAX LVs: 256 FREE PPs: 2208 (282624 megabytes)
LVs: 60 USED PPs: 1070 (136960 megabytes)
OPEN LVs: 27 QUORUM: 1
TOTAL PVs: 4 VG DESCRIPTORS: 4
STALE PVs: 0 STALE PPs: 0
ACTIVE PVs: 4 AUTO ON: yes
MAX PPs per VG: 32512
MAX PPs per PV: 2032 MAX PVs: 16
LTG size (Dynamic): 256 kilobyte(s) AUTO SYNC: no
HOT SPARE: no BB POLICY: relocatable
4.擴容完畢,進行文件系統擴容
#chfs -a size=+500G /u01
0516-787 extendlv: Maximum allocation for logical volume /u01 is 1145.
注：+代表在原來基礎上增加500G大小
從這個提示可以看到邏輯卷lv2已經到達最大的pp擴展數
# lslv fslv00
LOGICAL VOLUME: fslv00 VOLUME GROUP: rootvg
LV IDENTIFIER: 00f8d67e00004c000000014545274d99.13 PERMISSION: read/write
VG STATE: active/complete LV STATE: opened/syncd
TYPE: jfs2 WRITE VERIFY: off
MAX LPs: 1024 PP SIZE: 128 megabyte(s)
COPIES: 1 SCHED POLICY: parallel
LPs: 480 PPs: 480
STALE PPs: 0 BB POLICY: relocatable
INTER-POLICY: minimum RELOCATABLE: yes
INTRA-POLICY: middle UPPER BOUND: 32
MOUNT POINT: /u01 LABEL: /u01
MIRROR WRITE CONSISTENCY: on/ACTIVE
EACH LP COPY ON A SEPARATE PV ?: yes
Serialize IO ?: NO
INFINITE RETRY: no
已經超過max值了
重新調整pp的max值
# smit chlv
Change a Logical VolumeMove cursor to desired item and press Enter.
Change a Logical Volume
Rename a Logical Volume
Change a Logical Volume
Type or select a value for the entry field.
Press Enter AFTER making all desired changes.[Entry Fields]
* LOGICAL VOLUME name [fslv00(填寫正確的lv名字)]
Change a Logical Volume
Type or select values in entry fields.
Press Enter AFTER making all desired changes.
[Entry Fields]
* Logical volume NAME fslv00
Logical volume TYPE [jfs2] +
POSITION on physical volume middle +
RANGE of physical volumes minimum +
MAXIMUM NUMBER of PHYSICAL VOLUMES [32] #
to use for allocation
Allocate each logical partition copy yes +
on a SEPARATE physical volume?
RELOCATE the logical volume during yes +
reorganization?
Logical volume LABEL [/u01]
MAXIMUM NUMBER of LOGICAL PARTITIONS [1024(更改)] #
SCHEDULING POLICY for writing/reading parallel +
logical partition copies
PERMISSIONS read/write +
Enable BAD BLOCK relocation? yes +
Enable WRITE VERIFY? no +
Mirror Write Consistency? active +
Serialize IO? no +
Mirror Pool for First Copy +
Mirror Pool for Second Copy +
Mirror Pool for Third Copy +
Infinite Retry Option no
回車保存,退出
再次進行擴展文件系統
#chfs -a size=+500G /u01
沒有報錯,擴容完畢
df -g 再次檢查就行了