Re: Performance of ext4

[Holger Kiehl]

On Thu, 12 Jun 2008, Aneesh Kumar K.V wrote:

> On Thu, Jun 12, 2008 at 02:07:30PM +0000, Holger Kiehl wrote:
> > This time there is no OOPS and system is still up running without any
> > problem (except any process wanting to write something to this filesystem
> > gets stuck forever).
> >
> > What can I do to help find the problem? The system is still up with all those
> > process hanging in D-state.
>
> if you can login to the system get the dmesg output after
>
> echo t > /proc/sysrq-trigger
Unfortunately I have not set CONFIG_MAGIC_SYSRQ. Tomorrow I will try to
reproduce this with a kernel that has CONFIG_MAGIC_SYSRQ set.

Holger

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