Linux SCSI subsystem development
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From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Bernhard Sulzer <micraft.b@gmail.com>
Cc: linux-scsi@vger.kernel.org
Subject: Re: Invalid optimal transfer size 33553920 accepted when physical_block_size 512
Date: Sun, 22 Mar 2020 11:45:16 -0400	[thread overview]
Message-ID: <yq1o8sowfzn.fsf@oracle.com> (raw)
In-Reply-To: <33fb522e-4f61-1b76-914f-c9e6a3553c9b@gmail.com> (Bernhard Sulzer's message of "Sun, 22 Mar 2020 15:32:38 +0100")


Bernhard,

> This is pretty curious in itself, because lsblk reports 4096 physical
> sector size / 512 logical sector size and I would have thought
> physical sector size and physical block size should be the same.  Is
> this a bug that should be reported?

That's peculiar. What does:

# dmesg | grep Optimal

have to say?

Also, please send the output of:

# sg_readcap -l /dev/sdc
# sg_vpd -p bl /dev/sdc

Thanks!

-- 
Martin K. Petersen	Oracle Linux Engineering

  reply	other threads:[~2020-03-22 15:45 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-22 14:32 Invalid optimal transfer size 33553920 accepted when physical_block_size 512 Bernhard Sulzer
2020-03-22 15:45 ` Martin K. Petersen [this message]
     [not found]   ` <accd7d25-ee35-11b9-e49b-76e20d9550f2@gmail.com>
     [not found]     ` <yq1pnd4uxof.fsf@oracle.com>
2020-03-22 17:41       ` Bernhard Sulzer
     [not found]     ` <yq1pnd4tbxm.fsf@oracle.com>
2020-03-22 19:45       ` Bernhard Sulzer
2020-03-22 21:06         ` Martin K. Petersen
2020-03-22 21:20           ` Bernhard Sulzer
2020-03-22 21:53             ` Bernhard Sulzer
2020-03-22 22:45               ` Martin K. Petersen
2020-03-22 23:10                 ` Bernhard Sulzer
2020-03-22 23:22                 ` Bernhard Sulzer
2020-03-22 23:32                   ` Martin K. Petersen
2020-03-22 23:40                     ` Bernhard Sulzer
2020-03-23  1:41                       ` Martin K. Petersen
2020-03-24 13:49                         ` Bryan Gurney
2020-03-24 15:47                       ` [PATCH] scsi: sd: Fix optimal I/O size for devices that change reported values Martin K. Petersen
2020-03-24 15:52                       ` Invalid optimal transfer size 33553920 accepted when physical_block_size 512 Martin K. Petersen
2020-03-24 16:14                         ` Bernhard Sulzer
2020-03-27  0:54                           ` Martin K. Petersen
2020-03-22 20:57 ` [PATCH] scsi: sd: Optimal I/O size should be a multiple of reported granularity Martin K. Petersen

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