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Date:      Mon, 22 Nov 1999 09:37:37 -1000
From:      Richard Puga <puga@mauibuilt.com>
To:        freebsd-questions@freebsd.org
Subject:   whats up with vinum?
Message-ID:  <38399B81.DD5D5C44@mauibuilt.com>

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I am fooling around with vinum which I have set up in a raid 5
configuration under FreeBSD 3.3-STABLE

The trouble is that my machine keeps locking up under heavy use. If I
try and "make world" it dies about 15-60 seconds into it with a page
fault as well as trying to ftp over large files and somtimems while
trying to build kernels and somtimes vinum just stops responding.

After several page faults and fsck's on reboot I will loose an entire
drvie. It is marked as "stale"m by vinum and more than once has lost its
disklabel.

I am now using vinum striping and have been hamering on the drive for
days now without fault (doing up to 20 large tar balls at the same time
as well as make world and pulling over 40 gigs of data through NFS) but
I would like to use vinum raid 5 if
possable.

I have read the info at http://www.lemis.com/vinum/bugs.html and it
describes similar
problems with raid 5 and makes a referance to systems running "soft
updates" what exactly are soft updates and how do I tell if I am running
them and do I need to?

Any help or feed back would be greatly apreciated.

Thanks in advance

Richard Puga
puga@mauibuilt.com


Below is the latest vinum config I have tried.

PS; anyone thinking of playing with vinum I suggest you dont start out
with 4 18 gig drives ..:)

# Vinum configuration of , saved at Sat Nov 20 02:56:06 1999
drive d1 device /dev/da0e
drive d2 device /dev/da1e
drive d3 device /dev/da2e
drive d4 device /dev/da3e
volume puga
plex name puga.p0 org raid5 1024s vol puga
sd name puga.p0.s0 drive d1 plex puga.p0 len 35565568s driveoffset 265s
plexoffset 0s
sd name puga.p0.s1 drive d2 plex puga.p0 len 35565568s driveoffset 265s
plexoffset 1024s
sd name puga.p0.s2 drive d3 plex puga.p0 len 35565568s driveoffset 265s
plexoffset 2048s
sd name puga.p0.s3 drive d4 plex puga.p0 len 35565568s driveoffset 265s
plexoffset 3072s


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