topic FileSystem Software in Operating System - HP-UX

FileSystem Software

Eli Daniel — Mon, 13 Dec 2010 18:23:45 GMT

hi, i need help

cuestion:
The file systems and / or volume are using the feature of HP-UX 11.31 or are using agile Addressing Addressing the legacy.

how to know which version to use

Re: FileSystem Software

Shibin_2 — Mon, 13 Dec 2010 18:33:14 GMT

HP-UX 11.31 onwards using Agile addressing and you must choose that. Do not use legacy.

Re: FileSystem Software

James R. Ferguson — Mon, 13 Dec 2010 18:44:34 GMT

Hi:

Agile addressing means that your device file names are persistent and would look like '/dev/disk/disk3' instead of something like '/dev/dsk/c0d0t3'. Notice too "disk" instead of "dsk" and similarly "rdisk" in lieu of 'rdsk'.

You will see this in 'vgdisplay' output. Using 'ioscan -fn' will give you the *legacy* view, whereas 'ioscan -N -fn' will show the Agile View.

An excellent whitepaper is:

http://bizsupport.austin.hp.com/bc/docs/support/SupportManual/c01916036/c01916036.pdf

New options exist for 'vgimport' and 'vgscan' to choose the device file model you want to deploy. There is also a script called 'vgdsf' to migrate a LFM volume group from the legacy to the agile model in the appendix of the above whitepaper.

Regards!

...JRF...

Re: FileSystem Software

Ismail Azad — Mon, 13 Dec 2010 19:03:01 GMT

Hi,

I will say again that legacy addressing is still present only for backward comatiblity and will be obsolete in future releases. Use the persistent DSF or the agile address. Note :- the Agile address Lunpath hardware path and Agile Lun hardware path are two different things where the latter represents a virtualized hardware address and the former is related to a device handle. Authentication in the agile scheme is done with the WWID.

Regards
Ismail Azad

Re: FileSystem Software

Eli Daniel — Tue, 14 Dec 2010 12:48:55 GMT

Thanks,
I used Addressing the legacy

strings /etc/lvmtab
/dev/dsk/c3t5d5