需求
1.归档日志刷得太快,经常把空间挤爆.
2.Oracle数据库表空间需要扩容
解决方案
1.先做重要数据备份
2.进行文件系统扩容
步骤
1. df -g 查找出/u01 对应的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单位)
FREE PPs(PP块数)
FREE PPs: 10 (1280 megabytes) 可以看到只剩下1个G了
3.发现空间不足,进行磁盘扩展
3.1刷新磁盘(若果添加了物理磁盘,需要刷新一下)
# cfgmgr
cfgmgr命令详见
http://blog.sina.com.cn/s/blog_5a2405d10100lbxy.html
3.2查看磁盘使用情况
# 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:查看磁盘空间大小
#bootinfo -s hdisk1
3.3进行扩展,发现报错
#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.
//因为PP数目已经达到上限
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.//数字2表示2×1016个PP
3.5再次进行扩展
#extendvg rootvg hdisk2 hdisk3
3.6查看磁盘使用情况,发现已经在使用
#lspv
hdisk0 0007df58fb3e71d4 rootvg active
hdisk1 00009d03638bf367 rootvg active
hdisk2 00009d034caa708d rootvg active
hdisk3 00009d034caa7219 rootvg active
3.7查看vg卷的情况,确认已经扩容
#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.扩容完毕,进行文件系统扩容
#chfs -a size=+500G /u01
0516-787 extendlv: Maximum allocation for logical volume /u01 is 1145.
注：+代表在原来基础上增加500G大小
从这个提示可以看到逻辑卷lv2已经到达最大的pp扩展数
# 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
已经超过max值了
重新调整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(填写正确的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
回车保存,退出
再次进行扩展文件系统
#chfs -a size=+500G /u01
没有报错,扩容完毕
df -g 再次检查就行了