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Date:      Thu, 08 Jan 2009 10:27:57 +1100
From:      Andrew Snow <andrew@modulus.org>
To:        Danny Braniss <danny@cs.huji.ac.il>
Cc:        freebsd-fs@freebsd.org, freebsd-scsi@freebsd.org
Subject:   Re: iscsi client hangs performing I/O on a dead target
Message-ID:  <49653A7D.30906@modulus.org>
In-Reply-To: <E1LKYRx-0000na-VV@kabab.cs.huji.ac.il>
References:  <E1LKUmz-000O18-Kp@kabab.cs.huji.ac.il> <6c1e076a0901070247l7c006efajda8fddee84c337a@mail.gmail.com> <E1LKYRx-0000na-VV@kabab.cs.huji.ac.il>

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Danny Braniss wrote:
> freebsd likes to
> panic if a disc goes away, so don't hold your breath for a solution soon.


You hit the nail on the head.  This is going to be a increasingly bad 
problem as we continue pushing in this of networked storage.

It would be REALLY nice, if an I/O fails, to simply have the process 
attempting the I/O to be killed, instead of bringing the machine to its 
knees and locking up or panic the kernel.


- Andrew



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