linux-kernel - Re: [PATCH 05/10] mpt3sas: Fix IO error occurs on pulling out a drive from RAID1 volume created on two SATA drive

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Message-ID: <80dc6c6d-1d8a-8c60-b2e8-637a8cd997db@redhat.com>
Date:   Wed, 11 Oct 2017 17:37:42 +0200
From:   Tomas Henzl <thenzl@...hat.com>
To:     Sreekanth Reddy <sreekanth.reddy@...adcom.com>,
        linux-scsi@...r.kernel.org, hch@...radead.org
Cc:     martin.petersen@...cle.com, Sathya.Prakash@...adcom.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 05/10] mpt3sas: Fix IO error occurs on pulling out a drive
 from RAID1 volume created on two SATA drive

On 10/10/2017 03:11 PM, Sreekanth Reddy wrote:
> Whenever IO for raid volume fails with IOCStatus
>  "MPI2_IOCSTATUS_SCSI_IOC_TERMINATED"and SCSIStatus equal to
>  "(MPI2_SCSI_STATE_TERMINATED | MPI2_SCSI_STATE_NO_SCSI_STATUS)"
>  then return the IO to SML with "DID_RESET"
>  (i.e. retry the IO infinite times) host bytes.
>
> Earlier driver is returning the IO with "DID_SOFT_ERROR"
>  that reties the IO quickly for five times but still
>  firmware needed some more time and hence IOs were failing.
>
> Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@...adcom.com>

Signed-off-by: Tomas Henzl <thenzl@...hat.com>
Tomas