如果一个硬盘(hdiskX/pv)已经加入了vg, 那么可以使用lsattr/lscfg等
命令来查看这个硬盘的大小,如:
# lspv
hdisk0 00c54456747d8617 rootvg active
hdisk1 00c544667b3e201f rootvg active
...
hdisk13 none None
# lsattr -El hdisk0
PCM PCM/friend/scsiscsd Path Control Module False
algorithm fail_over Algorithm True
dist_err_pcnt 0 Distributed Error Percentage True
dist_tw_width 50 Distributed Error Sample Time True
hcheck_interval 0 Health Check Interval True
hcheck_mode nonactive Health Check Mode True
max_transfer 0x100000 Maximum TRANSFER Size True
pvid 00c54456747d86170000000000000000 Physical volume identifier False
queue_depth 16 Queue DEPTH False
reserve_policy no_reserve Reserve Policy True
size_in_mb 300000 Size in Megabytes False
unique_id 2A1135000C5002C7041430BST9300603SS03IBMsas Unique device identifier False
ww_id 5000c5002c704143 World Wide Identifier False
# lscfg -pv -l hdisk0
hdisk0 U78A0.001.DNWK52Z-P2-D3 SAS Disk Drive (300000 MB)
Manufacturer................IBM
Machine Type and Model......ST9300603SS
FRU Number..................44V6833
ROS Level and ID............42423039
Serial Number...............6SE1R9LZ
EC Level....................L36403
Part Number.................44V6838
Device Specific.(Z0)........000006329F003002
Device Specific.(Z1)........0617BB09
Device Specific.(Z2)........0021
Device Specific.(Z3)........10312
Device Specific.(Z4)........
Device Specific.(Z5)........22
Device Specific.(Z6)........L36403
Hardware Location Code......U78A0.001.DNWK52Z-P2-D3
PLATFORM SPECIFIC
Name: disk
Node: disk
Device Type: block
备注: 可以比较清晰的看到hdisk0的容量为300000MB.
但是对于hdisk13这种没有加入到任何vg中的磁盘这种方法就不管用了.
# lsattr -El hdisk13
PCM PCM/friend/xparray Path Control Module False
PR_key_value none Reserve Key True
algorithm fail_over Algorithm True
clr_q no Device CLEARS its Queue on error True
dist_err_pcnt 0 Distributed Error Percentage True
dist_tw_width 50 Distributed Error Sample Time True
hcheck_cmd inquiry Health Check Command True
hcheck_interval 60 Health Check Interval True
hcheck_mode nonactive Health Check Mode True
location Location Label True
lun_id 0x709000000000000 Logical Unit Number ID False
lun_reset_spt yes SCSI LUN reset True
max_transfer 0x40000 N/A True
node_name 0x50060e800547e454 Node Name False
pvid none Physical Volume ID False
q_err yes Use QERR bit False
q_type simple Queue TYPE True
queue_depth 2 Queue DEPTH True
reassign_to 120 REASSIGN time out True
reserve_policy single_path Reserve Policy True
rw_timeout 60 READ/WRITE time out True
scsi_id 0xcc600 SCSI ID False
start_timeout 60 START UNIT time out True
ww_name 0x50060e800547e454 FC World Wide Name False
# lscfg -vp -l hdisk13
hdisk13 U78A0.001.DNWK52Z-P1-C1-T1-W50060E800547E454-L709000000000000 XP MPIO Disk XP24000 (Fibre)
Manufacturer................HP
Machine Type and Model......OPEN-V
Part Number.................
ROS Level and ID............36303037
Serial Number...............50 047E4
EC Level....................
FRU Number..................
Device Specific.(Z0)........00000332CF000002
Device Specific.(Z1)........0A84 6E ....
Device Specific.(Z2).........
Device Specific.(Z3).........
Device Specific.(Z4)............
Device Specific.(Z5)........
Device Specific.(Z6)........
PLATFORM SPECIFIC
Name: disk
Node: disk
Device Type: block
这时可以使用bootinfo -s hdiskX命令看看
# bootinfo -s hdisk13
51530
可以看到这个硬盘hdisk0的大小为50GB
原文地址：http://blog.51cto.com/sf1314/2083200
