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Date:      Mon, 13 Aug 2001 21:42:34 -0400
From:      "Robert J. Adams" <radams@siscom.net>
To:        <freebsd-hackers@freebsd.org>
Subject:   Large /dev/md0 ramdisk
Message-ID:  <078a01c12466$345dc830$7215fbd1@jason>

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Hello,

I have a need for a rather large ramdisk. From what I've read, md is a
better way of going than mfs. I don't want this to be able to swap out. So
far I'm having trouble getting md to store anything larger than ~90meg ..

OS:
FBSD 4.3-S

relevant kernel config:
options         MD_NSECT=800000

Then I do a:
disklabel -r -w md0 auto
newfs /dev/md0c
mount /dev/md0c /mnt

Then.. while trying to copy over a large file.. it stops.. locks up the
term.. (but not the entire system) .. I can't kill the cp proc, end up
having to reboot to clear it.

> df
Filesystem    1K-blocks     Used    Avail Capacity  Mounted on
/dev/twed0s1a   2032623   287113  1582901    15%    /
/dev/twed1s1e   2032623   488229  1381785    26%    /news
/dev/twed0s1e 544066012 171091592 329449140    34%    /news/spool/news/bin01
/dev/twed1s1f 544066012 172257468 328283264    34%    /news/spool/news/bin02
procfs                4        4        0   100%    /proc
/dev/md0c        387607    90265   266334    25%    /mnt

It always gets to the exact same number of blocks... 90265 .. anyone have an
idea?

Please resond offllist since I'm not on hackers.. or you can answer this in
fbsd-questions ;)

Thanks,
Jason
---
Robert J. Adams radams@siscom.net http://www.siscom.net
Looking to outsource news? http://www.newshosting.com
SISCOM Network Administration - President, SISCOM Inc.
Phone: 937-222-8150 FAX: 937-222-8153


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