From: "Jack Wang" <jack_wang@usish.com>
To: 'Tao Ma' <tm@tao.ma>
Cc: linux-scsi@vger.kernel.org, 'LKML' <linux-kernel@vger.kernel.org>
Subject: RE: How to online remove an error scsi disk from the system?
Date: Fri, 1 Feb 2013 17:24:51 +0800 [thread overview]
Message-ID: <008b01ce005d$ff8c8200$fea58600$@com> (raw)
In-Reply-To: <510B8836.6090801@tao.ma>
On 02/01/2013 04:50 PM, Jack Wang wrote:
> Hi All,
> In our product system, we have several sata disks attached to one
> machine. So when one of the disk fails, the jbd2(yes, we use ext4)
> will hang forever and we will get something in /var/log/messages like
below.
> It seems to me that the io sent to the scsi layer is never returned
> back with -EIO which is a little bit surprised for me(It should be a
> timeout somewhere, right?). We have tried echo "offline" >
> /sys/block/sdl/device/state, but it doesn't work. So is there any way
> for us to let the scsi device returns all the io requests back with
> EIO so that all the end_io can be called accordingly? Am I missing
something here?
>
> Thanks,
> Tao
> [Jack Wang]
> Hi Tao,
>
> Have you tried:
> echo 1 > /sys/block/sdv/device/delete
It will do some IO first so it will hang doing IO.
> echo "- - -" > /sys/class/scsi_host/host
What do you mean for this line?
[Jack Wang] Sorry I mean to let the driver rescan to get the disk back.
The line should be :
echo "- - -" > /sys/class/scsi_host/hostx/scan.
Per above delete does not work , so no need to run this.
>
> another way is :
> find out which phy the disk attached to and:
> echo 1 > /sys/class/sas_phy/phy-x:x:x/link_reset
sorry, I have done it, but there is no response.
[Jack Wang]
What about
echo 1 > /sys/class/sas_phy/phy-x:x:x/hard_reset
?
Thanks,
Tao
>
> Jack
>
> --
> To unsubscribe from this list: send the line "unsubscribe
> linux-kernel" in the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
>
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WARNING: multiple messages have this Message-ID (diff)
From: "Jack Wang" <jack_wang@usish.com>
To: "'Tao Ma'" <tm@tao.ma>
Cc: <linux-scsi@vger.kernel.org>, "'LKML'" <linux-kernel@vger.kernel.org>
Subject: RE: How to online remove an error scsi disk from the system?
Date: Fri, 1 Feb 2013 17:24:51 +0800 [thread overview]
Message-ID: <008b01ce005d$ff8c8200$fea58600$@com> (raw)
In-Reply-To: <510B8836.6090801@tao.ma>
On 02/01/2013 04:50 PM, Jack Wang wrote:
> Hi All,
> In our product system, we have several sata disks attached to one
> machine. So when one of the disk fails, the jbd2(yes, we use ext4)
> will hang forever and we will get something in /var/log/messages like
below.
> It seems to me that the io sent to the scsi layer is never returned
> back with -EIO which is a little bit surprised for me(It should be a
> timeout somewhere, right?). We have tried echo "offline" >
> /sys/block/sdl/device/state, but it doesn't work. So is there any way
> for us to let the scsi device returns all the io requests back with
> EIO so that all the end_io can be called accordingly? Am I missing
something here?
>
> Thanks,
> Tao
> [Jack Wang]
> Hi Tao,
>
> Have you tried:
> echo 1 > /sys/block/sdv/device/delete
It will do some IO first so it will hang doing IO.
> echo "- - -" > /sys/class/scsi_host/host
What do you mean for this line?
[Jack Wang] Sorry I mean to let the driver rescan to get the disk back.
The line should be :
echo "- - -" > /sys/class/scsi_host/hostx/scan.
Per above delete does not work , so no need to run this.
>
> another way is :
> find out which phy the disk attached to and:
> echo 1 > /sys/class/sas_phy/phy-x:x:x/link_reset
sorry, I have done it, but there is no response.
[Jack Wang]
What about
echo 1 > /sys/class/sas_phy/phy-x:x:x/hard_reset
?
Thanks,
Tao
>
> Jack
>
> --
> To unsubscribe from this list: send the line "unsubscribe
> linux-kernel" in the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
>
--
To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the
body of a message to majordomo@vger.kernel.org More majordomo info at
http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2013-02-01 9:24 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-01 6:13 How to online remove an error scsi disk from the system? Tao Ma
2013-02-01 7:54 ` Bart Van Assche
2013-02-01 9:07 ` Tao Ma
2013-02-01 9:52 ` Bryn M. Reeves
2013-02-01 9:59 ` Tao Ma
2013-02-01 10:07 ` Bryn M. Reeves
2013-02-01 11:13 ` Tao Ma
2013-02-01 11:20 ` Bryn M. Reeves
2013-02-01 8:50 ` Jack Wang
2013-02-01 8:50 ` Jack Wang
2013-02-01 9:17 ` Tao Ma
2013-02-01 9:24 ` Jack Wang [this message]
2013-02-01 9:24 ` Jack Wang
2013-02-01 9:48 ` Tao Ma
2013-02-01 14:41 ` Hillf Danton
2013-10-16 16:22 ` taco
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