[DRBD-user] Reproduceable error - creating a single directory causes drbd to fail

[Dan Gahlinger]

>and that would be which kernel and drbd version/revision exactly?
>(sorry, no 10.2 handy right now)

Kernel: 2.6.18.2-34 (x86) SMP
Although I've tried slightly older kernel too (the one from suse
10.1) dont have it handy though.

DRBD version:
"out of the box" - 0.7.22-30

>and if you do this without drbd,
>it does behave fine, presumably?

It works fine without drbd, yes.


>what is in kernel log before "read-only file system" ?
>any oopes, BUG()s, stacktraces or drbd related messages?

no errors in the kernel log or messages, no traces, no bugs, no errors.


>what file system?

ext3. I've never been able to get drbd to work with anything else.

>does it happen
>  without drbd ?
Yes!
>  with drbd StandAlone?
Yes!
>  with drbd Connected?

Yes!

In fact, I've nailed it down a bit, to do "quick testing"
I created a test directory as follows (as root):

mkdir /test
cd /test
mkdir A
tar -cvf test.tar .

then copied this 10k tar file to the partition I just setup with DRBD,

and tried to untar it.

DRBD will "crash" every time!  By this I mean, it cannot create the directory,
and instantly puts the partition into "read-only mode"

Every single time.


I can untar hundreds of megs, of thousands of files, and it's fine.
But try and untar a single directory, and wham! every time.

what's up with this? weirder and weirder.

>did you run memtest


No, but I'm not sure how this applies. the system runs perfectly without DRBD.
such a small simple test, it's not ram.

Dan.
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