Re: problem with software raid1 on 2.6.22.10: check/rebuild hangs

2007-12-03 Thread Wolfgang Walter
Am Montag, 3. Dezember 2007 04:00 schrieb Neil Brown:
 On Monday December 3, [EMAIL PROTECTED] wrote:
  Hello,
 
  with kernel 2.6.22.10 checking a raid1 or rebuilding ist does not work on
  one of our machines. After a short time the rebuild/check does not make
  progress any more . Processes which then access the filesystems on those
  raids are blocked.
 
  Nothing gets logged. Access to other filesystems works fine.
 
  If we boot 2.6.17.10 (the kernel we used befor upgrading to 2.6.22) the
  raids the check/rebuild is done without any problems.

 Sounds like a driver problem.
 Your symptoms are completely consistent with a request being submitted
 to the underlying device, and that request never completing.

 What controller runs your drives for you.  You should probably report
 the problem to the relevant maintainer.

3ware Inc 9xxx-series SATA-RAID.

There are no problems with normal operation. And when those raids stop to work 
all other disks on the same controller still work.

And I don't see problems when reading from several disk in parallel.

But this doesn't mean its not the driver, of course.


 Do you compile your own kernels?

Yes.

 Would you be comfortable using git 
 bisect to narrow down exactly which change breaks things?  It should
 take more than a dozen or so tests.

Yes. Its a little bit difficult as I can only test kernels in the night and on 
weekend.

First I have to see how to use git to get the repository and how to do git 
bisect.


 NeilBrown

Thanks and regards,
-- 
Wolfgang Walter
Studentenwerk München
Anstalt des öffentlichen Rechts
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Re: raid6 check/repair

2007-12-03 Thread Thiemo Nagel

Dear Michael,

Michael Schmitt wrote:

Hi folks,


Probably erroneously, you have sent this mail only to me, not to the list...


I just want to give another suggestion. It may or may not be possible
to repair inconsistent arrays but in either way some code there MUST
at least warn the administrator that something (may) went wrong.


Agreed.


I don't know if linux-raid is the right code to implement this,
but I think it is the most obvious place to implement it I guess.


It's on the todo-list, I think, judging from this Debian bug:

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=405919

Kind regards,

Thiemo Nagel



I thought this suggestion was once noted in this thread but I am not 
sure and I did not find it anymore, so please bare with me if I wrote
it again. I had an issue once where the chipset / mainboard was 
broken so on one raid1 array I have diferent data was written to the 
disks occasionally and linux-raid / mdadm did not complain or do 
anything. Just by coincidence I found this issue that time. I did 
report this here on february too.


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mailing list configuration (was: raid6 check/repair)

2007-12-03 Thread Janek Kozicki
Thiemo Nagel said: (by the date of Mon, 03 Dec 2007 20:59:21 +0100)

 Dear Michael,
 
 Michael Schmitt wrote:
  Hi folks,
 
 Probably erroneously, you have sent this mail only to me, not to the list...

I have a similar problem all the time on this list. it would be
really nice to reconfigure the mailing list server, so that reply
does not reply to the sender but to the mailing list.

Moreover, in sylpheed I have two reply options: reply to sender and
reply to mailing list and both are using the *sender* address!
I doubt that sylpheed is broken - it works on nearly 20 other lists,
so I conclude that the server is seriously misconfigured.

apologies for my stance. Anyone can comment on this?

-- 
Janek Kozicki |
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