Re: building a new fileserver

From: Eric Anderson <anderson_at_centtech.com>
Date: Fri, 19 Jan 2007 11:22:38 -0600
On 01/18/07 21:28, Kris Kennaway wrote:
> On Thu, Jan 18, 2007 at 09:51:56PM -0500, W. Josephson wrote:
>> I'd like to solicit people's opinions about configuring
>> CURRENT for a new fileserver that we'll be using internally.
>> I have only recently had hardware available for running anything
>> other than 6-STABLE so:
>>
>> 	1.	We'd like to use the 16-port 3Ware 9650SE-16.
>> 	Does anyone here have experience with this card in
>> 	RAID-6 mode under FreeBSD?
>>
>>         2.      Any one have advice for setting up UFS+gjournal?
>>         I've been using FFS+SU for some time on a number of machines
>>         with filesystems up to about 1TB, but I'm not looking forward
>>         to fsck, even background fsck, on multiple 10TB filesystems.
>> 	Does anyone here have experience with UFS+gjournal on large
>>         filesystems?  Are there any gotchas to be aware of when
>>         configuring?  Can someone describe briefly what guarantees
>>         UFS+gjournal makes?
> 
> One gotcha with gjournal is that there is apparently still at least
> one pretty obscure data corruption bug lurking.  I see this when doing
> concurrent package builds on a 12 cpu system with a single gjournal
> data store, although I haven't run this configuration for a few
> months.
> 
> Kris


As a data point, I've been using gjournal with two 10Tb file systems 
(same host) for some time now, and it has been doing the job quite well. 
  I don't have nearly the number of CPU's as you, and I dedicate a 
journal for each fs.

Eric


-- 
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Eric Anderson        Sr. Systems Administrator        Centaur Technology
An undefined problem has an infinite number of solutions.
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Received on Fri Jan 19 2007 - 16:22:41 UTC

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