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Date: Sun, 26 Nov 2006 18:53:58 -0700
From: Scott Long <scottl@samsco.org>
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To: Danny Braniss <danny@cs.huji.ac.il>
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Cc: freebsd-scsi@freebsd.org, freebsd-hackers@freebsd.org
Subject: Re: iSCSI/shutdown advice needed
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Danny Braniss wrote:
> hi,
> 	I'm trying to finish up the iSCSI initiator,
> and need some advice. To shutdown the initiator, I
> need to:
> 	1- close down the CAM-peripherals, (ie da)
> 	2- empty up all pending iSCSI transactions
> 	3- close the tcp connection
> 2 & 3 I can handle, it's 1 that im stuck.
> Q: how can I call the peripheral close function, or is there
>    some CAM command?
>    I tried 
> 	    xpt_async(AC_LOST_DEVICE, isp->cam_path, NULL);
>    but this it far to drastic, and actually will cause panic
>    if the device is still mounted.
> 
> danny
> 

UFS doesn't handle devices going away unexpectedly.  Fixing it involves
massive changes to both UFS and the VM system.  However, sending the
AC_LOST_DEVICE is probably the right thing to do.

Scott