* Re: raidreconf feedback help (CFM!)
2002-11-06 12:12 raidreconf feedback help Rikard Morssing
@ 2002-11-07 23:46 ` Jakob Oestergaard
0 siblings, 0 replies; 2+ messages in thread
From: Jakob Oestergaard @ 2002-11-07 23:46 UTC (permalink / raw)
To: Rikard Morssing; +Cc: linux-raid
On Wed, Nov 06, 2002 at 01:12:22PM +0100, Rikard Morssing wrote:
> I just decided to risk it and expand my raid5-set with raidreconf. It
> failed miserably (but that might be due to hw).
Ok :)
You're not the first to report a failure - and especially on flaky
hardware there are things that raidreconf could do to recover
gracefully, that it doesn't.
>
> But it made me think. How should we create meaningful, extensive and
> informative debug reports which is crucial for the developers to debug
> the program? What i think should be on the raidreconf webpage is a list
> of steps to perform BEFORE and AFTER running the raidreconf, and where
> to send the report.
"developers" currently means "noone", unfortunately. But I'm probably
the closest thing to what you expected it would mean :)
I know of a few bugs that can be fixed fairly easily, which would
resolve most of the bug reports I have seen. And I am willing to do
those fixes. But I have been too busy (for the past year!) to get these
things done.
It really hurts to see a potentially useful tool rot away like this.
The tool did change hands once, to Daniel Cox, who fixed some important
bugs that I did not have the time to fix back then. He too, was hit by
the "too busy" syndrome, and I got the code back (with his fixes of
course), but hasn't touched it much since then.
RedHat then took the tool, and did some changes. As far as I know, the
only thing they changed was indentation and perhaps some configuration.
But I haven't looked more closely, and RedHat never at any point
notified me about them using the tool, or even cared to ask if I knew of
any specific bugs in the tool (go figure...)
I tried convincing the EVMS people (who included the kernel RAID
functionality in their code as well), to take the raidreconf code and
make it do hot-reconfiguration (as part of EVMS). They too, however,
seems to be hit by the "too busy" syndrome. (it seems to be
contagious - beware!)
>
> good idea?
Yes, very good.
Even better; you or anyone else out there listening; if you feel that
you have a few weekends to burn, take raidreconf and fix those few bugs
that make this tool eat half the arrays that its used on.
It really should be no more than a few weekends.
I'm sure that there are people on this list who would be more than happy
to help with testing. And I would of course be delighted to explain
the basic architecture of the tool, talk about the few known problems,
and come with whatever suggestions I might be able to come up with.
If no-one does this - I will fix it myself. I may do so in three weeks
from now. Or I may do so in three years from now. I cannot say.
I guess there is little doubt, that *if* the tool really worked
reliably, it would be useful.
But beware. Anyone who's been in contact with the code so far, have been
hit by the "too busy" syndrome. I take no responsibility (to the extent
of applicable law) over any implications contact with the raidreconf
code might have on your daily schedule... ;)
--
................................................................
: jakob@unthought.net : And I see the elder races, :
:.........................: putrid forms of man :
: Jakob Østergaard : See him rise and claim the earth, :
: OZ9ABN : his downfall is at hand. :
:.........................:............{Konkhra}...............:
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