On 2015-10-18 20:25:29 +0200, Tomas Vondra wrote:
> I've been doing a lot of filesystem testing / benchmarking recently, and
> today I've ran into a really strange issue with ext4 on two SSD devices in a
> RAID-0 configuration (Linux software raid).

> All this happens on an ext4 filesystem, created on a sw raid0 manager by
> kernel 4.0.4. The filesystem is created like this:
>   mdadm --create /dev/md0 --level=0 --raid-devices=2 /dev/sda1 /dev/sdb1
>   mkfs.ext4 -E stride=128,stripe-width=256 /dev/md0

Sounds like 

Try reproducing with 4.0.5 to verify, that should contain the fix.


Andres Freund

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