linux-kernel - Re: [PATCH 14/20 v1] [SCSI] mpt3sas: Complete the SCSI command with DID_RESET status for log

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <yq1si9na0x3.fsf@sermon.lab.mkp.net>
Date:	Fri, 19 Jun 2015 16:38:48 -0400
From:	"Martin K. Petersen" <martin.petersen@...cle.com>
To:	Sreekanth Reddy <sreekanth.reddy@...gotech.com>
Cc:	jejb@...nel.org, hch@...radead.org, jthumshirn@...e.de,
	martin.petersen@...cle.com, linux-scsi@...r.kernel.org,
	JBottomley@...allels.com, Sathya.Prakash@...gotech.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 14/20 v1] [SCSI] mpt3sas: Complete the SCSI command with DID_RESET status for log_info value 0x0x32010081

>>>>> Sreekanth Reddy <sreekanth.reddy@...gotech.com> writes:

> For any SCSI command, if the driver receives IOC status =
> SCSI_IOC_TERMINATED and log info = 0x32010081 then that command will
> be completed with DID_RESET host status.

> The definition of this log info value is "Virtual IO has failed and
> has to be retried".

> Firmware will provide this log info value with IOC Status
> "SCSI_IOC_TERMINATED", whenever a drive (with is a part of a volume)
> is pulled and pushed back within some minimal delay.  With this log
> info value, firmware informs the driver to retry the failed IO command
> infinite times, so to provide some time for the firmware to discover
> the reinserted drive successfully instated of just retrying failed
> command for five times(doesn't giving enough time for firmware to
> complete the drive discovery) and failing the IO permanently even
> though drive came back successfully.

Reviewed-by: Martin K. Petersen <martin.petersen@...cle.com>

-- 
Martin K. Petersen	Oracle Linux Engineering
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
Please read the FAQ at  http://www.tux.org/lkml/