mkraid to mdadm conversion?

mkraid to mdadm conversion?

[Herta Van den Eynde]

I'm fairly new to sw raid on linux, and may not have found all relevant 
pieces of information, so feel free to point me to the right doc.

First of all, is there any documentation on mdadm other than the man 
pages?  I currently have 2 systems with raid devices set up using the 
mkraid, and would like to know what I'd need to do to convert them to mdadm.

Kind regards,

Herta

Re: mkraid to mdadm conversion?

[Derek Vadala]

On Wed, 7 May 2003, Herta Van den Eynde wrote:

> First of all, is there any documentation on mdadm other than the man
> pages?  I currently have 2 systems with raid devices set up using the
> mkraid, and would like to know what I'd need to do to convert them to mdadm.

The man pages (and supporting docs) are comprehensive. If you are not
finding something in the man page for madm try looking at the manual pages
for mdadm.conf(5) and md(4). You might also want to look in
/usr/share/doc/mdadm for some additional info.

There's also this O'Reilly Network article (*cough*):
http://linux.oreillynet.com/pub/a/linux/2002/12/05/RAID.html

You don't need to 'convert' your arrays. You can just begin using mdadm to
manage existing arrays, assuming you are working with current versions of
all the tools and the md driver. Simply stop using raidtools and
/etc/raidtab. If your arrays are not set to autostart, you will have to
edit your init scripts to call mdadm and activate arrays much in the same
way that raidstart would have been called.

The best place for you to start is looking at how to generate an
/etc/mdadm.conf from your existing arrays. This is well docummented in the
texts cited above.

--
Derek Vadala, derek@cynicism.com, http://www.cynicism.com/~derek