Originally posted by: motif

Hi gurus,
How to remove logical volume and its file system in a mirrored volume group?
Volume group: datavg
Logical volume in volume group datavg: datalv01,datalv02
Mount point for logical volume datalv01: /db/data1
Will following steps work?
1. umount /db/data1
2. rmfs /db/data1
3. rmlv datalv01

If reduce file system size of /db/data1 to zero, can another logical volume datalv02 utilize released space from volume group datalv01?
Can I do this?
chfs -a size = 0 /db/data1

Thanks.
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Originally posted by: hdkutz

Hi motif,
yes the first part will work.

To your second point.
Will not work, if /db/data1 has data. I think the max reduction size is the size of the filesystem.
Look into

1. lsfs -q /db/data1

as root.
It will tell you, how much size your FS has and how much size your LV has.

Cheers,
ku
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Originally posted by: motif

Hi Ku,
Thank you so much for answering my question (almost give up my hope). For my second question, if I remove all data under FS /db/data1, could I use chfs to reduce FS size to zero or close to zero?

motif
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Originally posted by: motif

Hi Ku,
I reduced FS size, but can't reduce it to zero. Here is result if I try to reduce it zero:
chfs: Cannot shrink JFS2 file system smaller than 32768 (512 byte blocks).
Thank you for your helps.
Motif
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Originally posted by: esv

Why don't you delete it then?
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