| From: | Andres Freund <andres(at)anarazel(dot)de> |
|---|---|
| To: | Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: fs issues on software raid0 (PG_VERSION does not contain valid data) |
| Date: | 2015-10-18 18:37:18 |
| Message-ID: | 20151018183718.GD20675@awork2.anarazel.de |
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| Thread: | |
| Lists: | pgsql-hackers |
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.
Greetings,
Andres Freund
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