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SubjectRe: EXT4 ENOSPC Bug
Date
Hi Ted,

Very Strange:
I booted (after an crash which I did not see) a somewhat older kernel and I
once more caught the issue. Unfortunately I do not have your patch in this
older kernel.


older kernel: 2.6.28-rc5-andres-00070-g4e14e83
kernel I rean whole last week: 2.6.28-rc6-andres-00007-ged31348
There seem to have been no significant ext4 related changes to the kernel
between those.
for i in `seq 1 1000`;do touch tmp$i;done
touch: cannot touch `tmp139': No space left on device
...

rm tmp*;for i in `seq 1 200`;do dd if=/dev/zero of=tmp$i bs=1024k count=1;done
dd: opening `tmp139': No space left on device
139
..

Various different blocksizes and filesizes all return the same result.

This all hints to the patch Anesh linked. But it is included in 2.6.28-rc5.
Any idea how that could happen?

The kernel install is just a "make;make install; update-initramfs -c -k `make
kernelrelease`; update-grub" run...

A short idea how I could verify on binary level what kernelrelease it really
is?


If a somehow corrupted compile (murked ccache?) is the culprit of this (in
addition to my inaccuracies) I am very sorry for all your work.

I let this kernel run for the next hours if you want to run some tests...

Thanks,

Andres


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