Red Hat

Hi experts,

I'm trying to find otu the list of Volume groups and LUNs. I'm not able to use the following commands in Linux.

1. lvdisplay
2. pvdisplay
3. vgdisplay.

Error: Command not found.

Your help is appreciated!

Thanks,

Maybe the file systems are less full-featured here. df tells you all the mounts and devices. Each device can be a different file system type. The innards of logical volumes is file system dependent.

---------- Post updated at 11:42 AM ---------- Previous update was at 11:38 AM ----------

See man mnttab.

I was able to man<command> and it shows the results fine.

My system has a mnttab that tells me the logical volumes are under vxfs

$ pg /etc/mnttab
/dev/vg00/lvol5 / vxfs log 0 1 1276425326

so I would get information on the commands of vxfs to investigate and manage that logical volume, like this from google:

http://eval.veritas.com/downloads/van/fs_quickref.pdf

---------- Post updated at 11:59 AM ---------- Previous update was at 11:53 AM ----------

Maybe your .profile, ,kshrc or the like did not set your environment $PATH to include the dir where these commands are located.

---------- Post updated at 12:01 PM ---------- Previous update was at 11:59 AM ----------

$ which lvdisplay
/etc/lvdisplay
$

Usually you need to be root to use LVM tools (they are located in /usr/sbin).

I didnt the iostat command and got the following results.

I'm assuming that there are many LUNs showing under the device name as listed below. Any clue how to find out that how the file system is layed out of these devices?

Thanks,

Linux 2.6.18-128.1.6.el5 (fsbpodb-d) 10/15/2010

avg-cpu: %user %nice %system %iowait %steal %idle
0.83 0.04 1.01 0.56 0.00 97.55

Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sda 3.94 1.14 168.99 4295342 638507440
sda1 0.00 0.00 0.00 2884 752
sda2 0.47 0.01 11.66 45424 44052176
sda3 1.08 0.63 38.96 2369338 147216360
sda4 0.00 0.00 0.00 10 0
sda5 0.01 0.02 0.17 65902 627800
sda6 0.00 0.01 0.51 44188 1932352
sda7 2.37 0.47 117.69 1766868 444678000
sdb 1.61 7.57 33.60 28602018 126944112
sdc 3.55 37.48 49.60 141615690 187404393
sdd 0.00 0.49 0.92 1856450 3482920
dm-0 3.45 0.31 27.48 1162602 103815400
dm-1 1.44 0.01 11.48 42098 43366304
dm-2 1.19 0.46 9.23 1751250 34890272
dm-3 0.02 0.02 0.17 65402 627800
dm-4 0.07 0.01 0.51 43720 1932352
dm-5 15.03 0.32 120.13 1224514 453874560
dm-6 0.12 0.49 0.92 1854666 3482920
dm-7 0.00 0.02 0.01 89706 20752
dm-8 0.00 0.01 0.03 30242 125104
dm-9 0.00 0.00 0.00 11050 15000
dm-10 0.05 0.24 0.35 919390 1332896
dm-11 0.08 0.63 0.64 2392246 2411279
dm-12 0.00 0.00 0.00 2018 2464
dm-13 0.96 2.33 15.67 8808430 59221616
dm-14 0.08 0.59 1.62 2229287 6139080
dm-15 0.00 0.00 0.00 2490 1472
dm-16 0.34 6.66 1.55 25146936 5850776
dm-17 1.79 24.87 13.12 93971848 49576109
dm-18 1.05 2.12 13.15 7991214 49669587
dm-19 0.15 0.00 1.71 9326 6468211
dm-20 0.16 0.00 1.74 9595 6570047
dm-21 0.40 0.56 3.12 2115250 11805976
dm-22 0.61 1.83 4.81 6922194 18159088
dm-23 0.41 0.37 3.22 1401682 12155864
dm-24 2.77 4.77 20.85 18013450 78766376
dm-25 0.20 0.04 1.60 147658 6056808

try this

Code:

# /usr/sbin/lvm
lvm> lvscan
  ACTIVE            '/dev/VolGroup00/LogVol00' [29.12 GB] inherit
  ACTIVE            '/dev/VolGroup00/LogVol01' [768.00 MB] inherit
  ...
  ...

Code:

# /usr/sbin/lvdisplay | sed -e '/LV Name\|Block device/!d;s/.*  *\(.*\)/\1/;'|sed -e 'N;s/\(.*\)\n.*:\(.*\)/dm-\2 \1/'
dm-0 /dev/VolGroup00/LogVol00
dm-1 /dev/VolGroup00/LogVol01
...
...