Date: Thu, 17 Aug 2000 21:11:09 -0500 From: Paul Becke <pbecke@javagear.com> To: freebsd-questions@FreeBSD.ORG Subject: vn - vnode disk driver help needed Message-ID: <399C9B3D.92282FC0@javagear.com>
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I am trying to create a disk interface to a file using the vn vnode
driver and vnconfig utility, but I run into difficulty with the
disklabel utility.
I have added the following line to /etc/disktab
mydisk:ty=simulated:se#512:nt#3:ns#15:nc#80:pa#3600:oa#0:ba#4096:fa#512:ta=4.2BSD:pc#3600:oc#0:
I create the file myfile as follows
dd if=/dev/zero of=myfile.fs count=3600
output:
3600+0 records in
3600+0 records out
1843200 bytes transferred in 0.996005 secs (1850593 bytes/sec)
I then use vnconfig to configure the /dev/vn0c
vnconfig -v /dev/vn0c myfile.fs mount=/mnt
output:
/dev/vn0c: 1843200 bytes on myfile.fs
I then use disklabel but I get an error.
disklabel -w -r /dev/vn0c mydisk
output:
disklabel: ioctl DIOCWLABEL: Inappropriate ioctl for device
I am using FreeBSD version 3.4 with the GENERIC kernel with the
exception that I have added the following line to the config file when I
build the kernel.
pseudo-device vn 4
Can anyone help me out and tell me what I might be doing wrong.?
Thanks
Paul
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