Re: create metadata from DMRAID

On Mon, Jul 02, 2007 at 12:18:46PM -0700, Darrick J. Wong wrote:
> On Mon, Jul 02, 2007 at 11:23:08AM -0700, Kulkarni, Sunil A wrote:
> > Is .write being used by any format handlers currently ? If .write is
> > used to write the complete metadata, then it can be used to create the
> > metadata also, right ? 
> 
> Last time I looked, the asr handler uses .write when reconfiguring
> RAID1 sets.
> 
> And no, create should be in its own function because writing and
> creating are orthogonal operations--create happens once; write happens
> any time you reconfigure the array.

Exactly.

> 
> > Also, instead of 'dmraid -C isw_xxxxxx_raidSet1 .....'
> > How about  'dmraid -C VolumeName ...'
> > And then isw can prepend isw_xxxxxx to the volume name to make
> > isw_xxxxx_VolumeName
> > This way, different format handlers can make up their own string and one
> > need not give isw specific string from the command line (since isw_xxxxx
> > is generated internally by isw anyway).
> 
> How do you specify which handler format you want?  Separate switch, or
> embedded in the volume name?  Also, some raids let you specify a
> volumename; others only provide for a bunch of hex numbers.

-f option.

Heinz

> 
> --D



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