Re: [PATCH] [RFC] Advanced TCA Disk Hotswap support in Linux Kernel [core 1/2]

From: Alan Cox (alan@lxorguk.ukuu.org.uk)
Date: Fri Oct 11 2002 - 05:40:21 EST


On Fri, 2002-10-11 at 02:19, Steven Dake wrote:
> This mechanism is far superior to /proc/scsi/scsi because it:
> 1) provides true FibreChannel hotswap support (at this point qlogic FC
> HBAs)
> 2) is programmatic such that errors can be reported from kernel to user
> without looking is /var/log/.
> 3) Provides superior response times vs opening a file and writing to
> proc.
> 4) Easier to control from kernel and user via C APIs vs using
> open/write.

Doesn't seem to have any locking/ Thats a scsi layer problem that does
need tackling to mke hotswap actually work well. At the very least the
host queue needs locks and probably the hosts need refcounting now

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