Originally posted by: amitmacau

I want to creat raw lvs for my database. The vg will have some lvs having filesystems and some lvs as raw. How to go about. Is it possible to have raw and filesystem on some lvs of same VG.
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Originally posted by: nagger

AIX has been doing this for 20 years!!

Just use the crlv command or the LVM smitty panels
Short cut to the LVMsmitty panels with: smitty lvm
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Originally posted by: cd3lgado

Hi

This bring me to the question:

How to create a raw device in AIX. I've always used the mklv with -t "raw" option despite this is not a really type for LV.

Different from Linux where you make a dd copy to the target LV and run the raw command in order to link these newly created raw device with a pointer.

TIA
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Originally posted by: HajoEhlers

> Hi
>
> This bring me to the question:
>
> How to create a raw device in AIX. I've always used
> the mklv with -t "raw" option despite this is not a
> really type for LV.

The -t option give the logical volume just a label for the output of an lsvg datavg ( In case the lv was created within this vg ). Its imho a good idea in case some scripts parsed the output to mirror an lv if its a jfs or jfs2 LV type. And mirroring a raw device with the LVM is not a good idea.

If you create a lv with the mklv command you will see in the /dev an entry starting with r for the just created lv. This is your raw device.
Example: ( Not working because from memory )
mklv -t raw -y dbrawdata 100 datavg

Now a "ls -l /dev/*dbrawdata" will show:
b ... /dev/rdbrawdata <--- THIS IS YOUR raw logical volume
c ..../dev/dbrawdata

hth
Hajo
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Originally posted by: orphy

Typo

>>Now a "ls -l /dev/*dbrawdata" will show:
>>b ... /dev/rdbrawdata <--- THIS IS YOUR raw logical volume
>>c ..../dev/dbrawdata

c ... /dev/rdbrawdata <--- THIS IS YOUR raw logical volume
b ..../dev/dbrawdata
Orphy! :-)
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