Hi,
On 10/18/2015 08:37 PM, Andres Freund wrote:
Hi,
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
http://git.neil.brown.name/?p=md.git;a=commitdiff;h=a81157768a00e8cf8a7b43b5ea5cac931262374f
Try reproducing with 4.0.5 to verify, that should contain the fix.
Yep, that seems to have fixed the issue. I've been actually looking at
that fix but concluded that it's unrelated, for some reason ...
regards
--
Tomas Vondra http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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