[LinuxFailSafe] SCSI Hardware
jrodman at suse.com
Mon Aug 28 13:16:17 MDT 2000
* Josh Durham (jmd at aoe.vt.edu) [000828 19:04]:
> This might be a FAQ, but I looked over the archives and didn't see it.
> I have a RAID system with an Ultra2 SCSI interface. What I would like
> to do is hook this up to two computers, by making the SCSI IDs for each
> controller unique(ie, 6 and 7.) If I do this, will I be able to use
> FailSafe to share the RAID?
This is a common question which hasn't gotten onto the website FAQ but
probably will eventually.
Failsafe is a framework for making services highly available through
monitoring, policies, responses to failures, etc.. That is, if the
underlying technology can be made highly available, Failsafe helps you
With this in mind, a shareable SCSI bus certainly can be made highly
available, and scripts to control the failover of a shared-storage
filesystem shouldn't be too difficult to write (I would expect them to get
written/published soon enough).
The tricky bit, which is what you're really asking, is 'Can I set up
Linux to share a SCSI bus with multiple intiators?' which is really more
of a Linux kernel/driver question than a Failsafe question. Of course it
is very relevant to Failsafe, so pointers on the topic would be great..
but I don't know the current status of these issues myself, sorry.
> If I have to upgrade the RAID system to a Fibre-Channel interface,
> what adapters would people recommend that would work with Linux
Yes, hopefully some others on the list know :-)
> Thanks alot!
> - Josh
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