lvreduce

[Prashantj]

Hi,

i am unable to use the lvreduce command. If i use this command, after that i was not able to mount the file system again.

[Patrick Wallek]

If you reduced your LV without first reducing the filesystem in the LV (via 'fsadm') then you just messed everything up.

The easiest way I have found to reduce a LV is:
1) back up the data
2) remove the large LV
3) recreate the LV with the smaller size you want
4) create the filesystem on the "new" LV
5) restore the data.

[Siju Vadakkan]

provide the following details :

1. lvdisplay lvname
and the commands u issued

[Prashantj]

Hi,

below mention file system haveing 200 mb
spacem but i want to reduce it 100 mb.
/dev/vg00/lvol21 204800 1157 190923 1% /ram

If possiable kindly provide the staps.
Thanks .. Prashantj

[Patrick Wallek]

See my response above.

[Siju Vadakkan]

Here are the steps:

1. reduce the filesystem first

#fsadm -F vxfs -b 100m /ram

2. Reduve the logical volume

#lvreduce -L 100 /dev/vg00/lvol21

[Anshumali]

**Only if you have OnlineJFS. :)

[AVV]

Hi,

If not online jfs not installed , better way to you can follow is ,but back up the data first and follow the below steps.

1. unmount the fs
2. lvremove
3. recreate lv (lvcreate -L size -n lvolname vgxx)
4.newfs -F fstype /dev/vgxx/r
5.mount it again.

Thanks -ajeshvv

[Prashantj]

i am happy with the answer.
Prashant Jadhav