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Date:      Wed, 5 Sep 2001 09:17:30 +0930
From:      Greg Lehey <grog@FreeBSD.org>
To:        Drew Derbyshire <avatar+aug2001@kew.com>
Cc:        Darryl Okahata <darrylo@soco.agilent.com>, FreeBSD-Stable <stable@FreeBSD.ORG>
Subject:   Re: Vinum vs. hardware RAID (was: RAID5)
Message-ID:  <20010905091730.O85816@wantadilla.lemis.com>
In-Reply-To: <02ab01c1359b$69ea4b90$94cba8c0@xena>; from avatar%2Baug2001@kew.com on Tue, Sep 04, 2001 at 07:43:35PM -0400
References:  <20010903142145.K10812-100000@topperwein.dyndns.org> <200109041749.KAA12474@mina.soco.agilent.com> <20010905084245.H85816@wantadilla.lemis.com> <02ab01c1359b$69ea4b90$94cba8c0@xena>

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On Tuesday,  4 September 2001 at 19:43:35 -0400, Drew Derbyshire wrote:
>>>      My issues with vinum are:
>>>
>>> [ Note: it's been a year or two since I've used vinum, and so the
>>>   following may be out-of-date.  Corrections appreciated.  ]
>>>
>>> * Once set up, vinum works well, but it takes a lot of hard reading to
>>>   set up.  The actual work itself is not hard, mind you, but it's
>>>   difficult to figure out what you need to put into the config file.
>>
>> I've added sample configs to the man page.  People still have trouble,
>> but none of them seem to have read that section of the man page.
>
> Is this 4.3 man page or have there been additional changes since then?    It
> appears the last update was in April, which is previous to my own
> experience.

No, it hasn't changed since then.

> When I read the vinum man page while setting up two systems in June, the
> examples were unclear because the parameters in the examples were not
> explained well.

I'm open to feedback on what parameters haven't been explained well,
and where.

>>>   I had /usr on a vinum-controlled partition, and upgrading FreeBSD
>>>   via CDs was a royal pain.  I basically had to do the upgrade to
>>>   the root drive (moving /usr out of the way, rebuild the kernel
>>>   with vinum, reboot, and then copy/move the contents of /usr into
>>>   the vinum-controlled /usr -- bleah).
>>>
>>>   [ Today, I should be able to kldload vinum, but I don't think I can do
>>>     this at install time from the CDROM, and so I'd still have to play
>>>     games with /usr.  ]
>>
>> Yes, currently installing on Vinum is a pain.  But vinum(8) loads the
>> kld automatically, and I suspect that you should be able to load it
>> during the installation process.  The problem is that sysinstall
>> doesn't know about Vinum.
>
> This is a critical issue for a binary upgrade when /usr lives on a vinum
> volume.  Is there an open PR on it?  (And no, I don't expect it fixed in
> 4.4!)

No, not that I know of.

Greg
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