Oliver,
On 2018-05-17 19:04, Oliver Neukum wrote:
Am Donnerstag, den 17.05.2018, 12:29 +0530 schrieb Tushar Nimkar:
Those commands issued from different layers say: sd.. uas.. scsi..
so making them to go one after other. Once REPORT_LUN done go with
READ_CAPACITY_16.
This is only for the UAS devices. I believe no disturb to BOT
behavior.
Hi,
this is good news.
1. We cannot slow down all UAS devices because a few are broken. This
would need to be selective.
2. What is insufficient about "shost->async_scan" for your approach?
Unfortunately for our build CONFIG_SCSI_SCAN_ASYNC wan not set.
And enabling it solves our issue of enumeration.
But as per bellow commit
"If you have built SCSI as modules, enabling this option can
be a problem as the devices may not have been found by the time your
system expects them to have been."
commit 21db1882f79a1ad5977cae6766376a63f60ec414
Author: Matthew Wilcox <matthew@xxxxxx>
Date: Wed Nov 22 13:24:52 2006 -0700
[SCSI] Add Kconfig option for asynchronous SCSI scanning
Without this patch, the user has to add a kernel command line
parameter
to get asynchronous SCSI scanning. Now they can select the default
at
compile time and still override it at boot time if they need to.
Signed-off-by: Matthew Wilcox <matthew@xxxxxx>
Signed-off-by: James Bottomley <James.Bottomley@xxxxxxxxxxxx>
We have built SCSI as module will it cause any problem to enable
CONFIG_SCSI_SCAN_ASYNC ?
Regards
Oliver
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Best Regards,
Tushar R Nimkar
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