Re: XFS metadata CRC errors on zram block device on ppc64le architecture

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To: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Subject: Re: XFS metadata CRC errors on zram block device on ppc64le architecture
From: Christoph Hellwig <hch@xxxxxx>
Date: Fri, 4 Aug 2023 15:42:48 +0200
Cc: Dusty Mabe <dusty@xxxxxxxxxxxxx>, Hannes Reinecke <hare@xxxxxxx>, wq@xxxxxx, Minchan Kim <minchan@xxxxxxxxxx>, Jens Axboe <axboe@xxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, linux-block@xxxxxxxxxxxxxxx, Christoph Hellwig <hch@xxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, marmijo@xxxxxxxxxx
In-reply-to: <20230804032523.GA81493@google.com>
References: <b2d40565-7868-ba15-4bb1-fca6f0df076b@dustymabe.com> <20230802094106.GA28187@lst.de> <3f36882c-b429-3ece-989b-a6899c001cbd@suse.de> <43843fec-f30a-1edc-b428-1d38ddb1050f@dustymabe.com> <a0f05188-d142-82f2-74aa-6c9a6ae2bbc9@dustymabe.com> <20230804032523.GA81493@google.com>
User-agent: Mutt/1.5.17 (2007-11-01)

FYI, I've found an arm64 system with 16k page size support, and while
I can't reproduce the exact issue, I do see corruption with I/O test
on zram that don't show on the same system with 4k pages.  I'm trying
to understand the details at the moment.

Follow-Ups:
- Re: XFS metadata CRC errors on zram block device on ppc64le architecture
  - From: Hannes Reinecke

References:
- XFS metadata CRC errors on zram block device on ppc64le architecture
  - From: Dusty Mabe
- Re: XFS metadata CRC errors on zram block device on ppc64le architecture
  - From: Christoph Hellwig
- Re: XFS metadata CRC errors on zram block device on ppc64le architecture
  - From: Hannes Reinecke
- Re: XFS metadata CRC errors on zram block device on ppc64le architecture
  - From: Dusty Mabe
- Re: XFS metadata CRC errors on zram block device on ppc64le architecture
  - From: Dusty Mabe
- Re: XFS metadata CRC errors on zram block device on ppc64le architecture
  - From: Sergey Senozhatsky

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