LVSLPLIT Vs. LVREDUCE

[Enrico Venturi]

what's the difference between lvsplit and lvreduce? I mean: what's the reasons to use one command rather than the other one?

Thanks

Enrico

[Thierry Poels_1]

Hi,

lvreduce is used to remove a mirror.

lvsplit is used to split a mirror. Afterwards you can have both copies mounted simultaneously. Mostly used for backup purposes (consistent backup of the data while users can keep on working on the primary copy). Mirrors can be merged afterwards.

regards,
Thierry.

[harry d brown jr]

Enrico,

lvsplit: http://www.doc.ic.ac.uk/~mac/manuals/hpux-manual-pages/hpux/usr/man/man1m/lvsplit.1m.html

lvreduce: http://www.doc.ic.ac.uk/~mac/manuals/hpux-manual-pages/hpux/usr/man/man1m/lvreduce.1m.html

live free or die
harry

[Deshpande Prashant]

HI

LVSPLIT :- splits the mirrored volume in to two logical volumes. Use this if you want to use two copies of same data mounted seperately.
Typically I have used in backup situations. Split mirror copy mount it backup mirror copy, leaving main copy online. After backup join mirror back.

LVREDUCE :- decreases space allocation or the number of mirror copies of logical volume.

HTH
Prashant.

[Helen French]

Hi,

Another document:

lvsplit - http://www.docs.hp.com/hpux/onlinedocs/B2355-90681/B2355-90681.html

lvreduce - http://www.docs.hp.com/hpux/onlinedocs/B2355-90681/B2355-90681.html

HTH,
Shiju