From: Stefan Haberland <sth@linux.vnet.ibm.com>
To: keith.busch@intel.com, axboe@fb.com, torvalds@linux-foundation.org
Cc: linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org,
Sebastian Ott <sebott@linux.vnet.ibm.com>
Subject: [BUG] Regression introduced with "block: split bios to max possible length"
Date: Thu, 21 Jan 2016 15:57:14 +0100 [thread overview]
Message-ID: <56A0F1CA.4010303@linux.vnet.ibm.com> (raw)
Hi,
unfortunately commit e36f62042880 "block: split bios to maxpossible length"
breaks the DASD driver on s390. We expect the block requests to be multiple
of 4k in size. With the patch applied I see the requests split up in
multiple
of 512 byte and therefore the requests get rejected and lots of I/Os fail.
Could you please fix or revert the patch?
We have following values set for the block queue:
hw_sector_size 4096
logical_block_size 4096
minimum_io_size 4096
physical_block_size 4096
max_hw_sectors_kb 760
max_sectors_kb 760
max_segment_size 4096
max_segments 65535
Regards,
Stefan
next reply other threads:[~2016-01-21 14:57 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-21 14:57 Stefan Haberland [this message]
2016-01-21 21:34 ` [BUG] Regression introduced with "block: split bios to max possible length" Jens Axboe
2016-01-21 22:51 ` Keith Busch
2016-01-22 1:12 ` Linus Torvalds
2016-01-22 3:21 ` Keith Busch
2016-01-22 4:15 ` Linus Torvalds
2016-01-22 14:56 ` Keith Busch
2016-01-22 17:15 ` Jens Axboe
2016-01-22 15:06 ` Ming Lei
2016-01-22 17:03 ` Linus Torvalds
2016-01-22 17:48 ` Ming Lei
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