Filesystems Raid, ReiserFS and hours of fun

Jeff Davies jeff_davies at byu.edu
Tue Mar 15 08:59:19 MST 2005


I am using a (ADAPTEC CHIPSET)Serial ATA, CERC-SATA-6CH Controller
I am also using SUSE 9.1 Pro (2.6.4-52-smp)
I highly doubt I am using IDE-TCQ unless it's enabled by default.

Hope this helps narrow it down.

Thanks
Jeff


-----Original Message-----
From: Nicholas Leippe [mailto:nick at byu.edu] 
Sent: Tuesday, March 15, 2005 8:19 AM
To: jeff_davies at byu.edu; Provo Linux Users Group Mailing List
Subject: Re: Filesystems Raid, ReiserFS and hours of fun

On Tuesday 15 March 2005 08:05 am, Jeff Davies wrote:
> I believe so I would have to double check.
> If we did could you tell me the affects?

Well, from what you described, as long as you did a clean shutdown, I
wouldn't 
think it to have been part of the problem this time.  However, with reiserfs

(and probably other journalled filesystems) it is extremely dangerous, since

proper operation of the journal depends on known, physical commit states
(ie, 
when the drive acks a write, the fs expects it to be physically written).  
W/write caching, it is possible for a hardware or even a software failure to

lose the cached data before it has been committed to the platter.  So, I 
would recommend disabling it.  This doesn't help your current problem--I've 
digressed.

What kernel are you running?  The only threads I've seen recently are
a) some reports of reiserfs corruption with 2.6.8.? kernel
b) some reports of reiserfsck corruption with IDE-TCQ enabled in 2.6
kernels.



-- 
Respectfully,

Nicholas Leippe
Sales Team Automation, LLC
1335 West 1650 North, Suite C
Springville, UT  84663 +1 801.853.4090
http://www.salesteamautomation.com





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