raidreconf

raidreconf

[Nick Maynard]

Hello,

I'm trying to track down a recent version of raidreconf, but all my Google
searches have come up blank - the latest I can find is 2001 sometime.

Now, I know someone on the list (Brad I think) has been working on raidreconf
quite recently - has anyone got any info on where I can get a more recent
version?

TIA,

--

Nick Maynard
nick.maynard@alumni.doc.ic.ac.uk

Re: raidreconf

[Brad Campbell]

Nick Maynard wrote:
> Hello,
> 
> I'm trying to track down a recent version of raidreconf, but all my Google
> searches have come up blank - the latest I can find is 2001 sometime.
> 
> Now, I know someone on the list (Brad I think) has been working on raidreconf
> quite recently - has anyone got any info on where I can get a more recent
> version?

Things have slowed a little in that department at the moment as my main test hard disk underwent a 
rapid deceleration test from a table to a tiled floor and has somewhat ceased to function. (Don't 
try this one at home kids)

Prior to that I had got as far as intermittently creating raid-6 volumes that worked (the rest of 
the time the blocks were all intact but in the wrong order!) and kludging it to work with raid-5 
volumes over 2TB. (I did manage to reconfigure a 1.6TB array to be a 2.1TB array with no data loss).

I have a new set of test drives in my purchase queue, but have not quite got that far yet.

The raidtools-1.00.3.tar.gz package is the one I have been working with and seems to be pretty 
stable on anything under 2TB. I certainly did not hit any major flaws while working with it as is.

I'm currently thinking about how to do it while removing the dependency on raidtools and moving to a 
mdadm like setup, but have not got far down that path.

If you want to use raidreconf and you created your arrays with mdadm then use lsraid to generate a 
suitable raidtab, edit that to create the new one and have at it.
On <2TB I found it pretty solid.

Regards,
Brad

Re: raidreconf

[Nick Maynard]

> Things have slowed a little in that department at the moment as my main test
> hard disk underwent a
> rapid deceleration test from a table to a tiled floor and has somewhat ceased
> to function. (Don't
> try this one at home kids)
>
> Prior to that I had got as far as intermittently creating raid-6 volumes that
> worked (the rest of
> the time the blocks were all intact but in the wrong order!) and kludging it
> to work with raid-5
> volumes over 2TB. (I did manage to reconfigure a 1.6TB array to be a 2.1TB
> array with no data loss).
>
> I have a new set of test drives in my purchase queue, but have not quite got
> that far yet.
>
> The raidtools-1.00.3.tar.gz package is the one I have been working with and
> seems to be pretty
> stable on anything under 2TB. I certainly did not hit any major flaws while
> working with it as is.
>
> I'm currently thinking about how to do it while removing the dependency on
> raidtools and moving to a
> mdadm like setup, but have not got far down that path.
>
> If you want to use raidreconf and you created your arrays with mdadm then use
> lsraid to generate a
> suitable raidtab, edit that to create the new one and have at it.
> On <2TB I found it pretty solid.
So the current version of raidreconf is included with raidtools-1.00.3.tar.gz?

Looking at http://people.redhat.com/mingo/raidtools/, I find that archive is
dated 15 Jan 2003.  Is that the version you're using, or have you
improved/fixed/patched raidreconf since then?

Thanks,

--

Nick Maynard
nick.maynard@alumni.doc.ic.ac.uk

Re: raidreconf

[Brad Campbell]

Nick Maynard wrote:

> So the current version of raidreconf is included with raidtools-1.00.3.tar.gz?

As far as I can see.

> Looking at http://people.redhat.com/mingo/raidtools/, I find that archive is
> dated 15 Jan 2003.  Is that the version you're using, or have you
> improved/fixed/patched raidreconf since then?

I certainly have played with various mods to that code but not managed to turn up anything reliable 
yet. I did have it converting raid-0 and raid-5 to raid-6 at one stage and I got all excited about 
that, but when I slightly altered the configuration it all came crashing down. Then I dropped the 
disk and I really just chucked all my toys out of the pram and went back to doing anything other 
than playing with hard disks. I have yet to pick up another disk and get back into it.


Regards,
Brad

Re: raidreconf

[Nick Maynard]

> I certainly have played with various mods to that code but not managed to
> turn up anything reliable yet. I did have it converting raid-0 and raid-5 to
> raid-6 at one stage
That was what I read about...

> and I got all excited about that, but when I slightly altered the
configuration
> it all came crashing down. Then I dropped the disk and I really just chucked
> all my toys out of the pram and went back to doing anything other than playing
> with hard disks. I have yet to pick up another disk and get back into it.
*chuckle* Right - I can understand that ;-)

Righty - raidtools-1.00.3.tar.gz it is.  Thanks for the assitance.

--

Nick Maynard
nick.maynard@alumni.doc.ic.ac.uk