Date: Thu, 21 Aug 1997 14:04:55 +0200 (CEST) From: mickey@deadline.snafu.de (Andreas S. Wetzel) To: Andrew Reilly <andrew@zeta.org.au> Cc: scsi@freebsd.org Subject: Re: newfs on Fujitsu R640 (2k sector media) Message-ID: <m0x1Vyx-000BmqC@deadline.snafu.de> In-Reply-To: <freebsd-scsi.199708200229.MAA21070@gurney.reilly.home> References: <freebsd-scsi.199708200229.MAA21070@gurney.reilly.home>
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Hi!
---
In article <freebsd-scsi.199708200229.MAA21070@gurney.reilly.home>,
Andrew Reilly <andrew@zeta.org.au> writes:
>
> I have a Fujitsu M2513A magneto-optical disk drive, and I've
> been using it quite happily with R230 media (230M, 512-byte
> sectors) for a while, because I was not confident that my
> pre-release 2.2 FreeBSD would support non-512-byte sectors.
> I have since upgraded to 2.2.2, and bought myself some R640
> disks (640M, 2048-byte sectors), and lo: it doesn't work.
>
> [...]
>
> What's bugging me at the moment is that I don't seem to be
> able to disklabel or newfs one of the R640 disks.
I just got my new Fujitsu 2513A6 drive with a 640 Mb media and had it
running in less than an hour, using FreeBSD 3.0-current SMP as of 08/15/97.
> I'm using this disktab entry, which I built out of the
> numbers reported at boot time, but it's essentially the same
> as the one that you get with disklabel -w -r auto:
>
> fuj640|R640|Fujitsu R640 media Meg 3.5inch Magneto-Optical:\
> :ty=removeable:dt=SCSI:rm#3600:\
> :se#2048:nt#64:ns#32:nc#151:sc#2048:su#310352:\
> :pa#310352:oa#0:ba#16384:fa#2048:ta=4.2BSD:\
> :pc#310352:oc#0:
Obviously this disklabel is missing at least the number of tracks per
cylinder (nt#XXX). So here is the disklabel I have constructed from
the values given at boot time (number of sectors), and the information
Fujitsu has online at their WWW pages:
MO640|Fujitsu 2513A MO drive 640 Mb:\
:dt=SCSI:ty=removable:\
:nc#19397:ns#16:nt#1:\
:se#2048:rm#3600:\
:pa#310352:oa#0:ta=4.2BSD:ba#4096:fa#2048:\
:pc#310352:oc#0:\
:pd#310352:od#0:
Labeling the drive using this disklabel works as well as a newfs onto
the drive:
# disklabel -w -r od0 MO640
# newfs -m 0 -o space -i 12288 -u 16 -t 1 -c 413 /dev/rod0a
/dev/rod0a: 1241408 sectors in 19397 cylinders of 1 tracks, 64 sectors
606.2MB in 47 cyl groups (413 c/g, 12.91MB/g, 1088 i/g)
super-block backups (for fsck -b #) at:
32, 26464, 52896, 79328, 105760, 132192, 158624, 185056, 211488, 237920,
264352, 290784, 317216, 343648, 370080, 396512, 422944, 449376, 475808,
502240, 528672, 555104, 581536, 607968, 634400, 660832, 687264, 713696,
740128, 766560, 792992, 819424, 845856, 872288, 898720, 925152, 951584,
978016, 1004448, 1030880, 1057312, 1083744, 1110176, 1136608, 1163040,
1189472, 1215904,
# mount /dev/od0a /mnt
# df -i
Filesystem 1K-blocks Used Avail Capacity iused ifree %iused Mount
/dev/od0a 613730 2 613728 0% 1 51133 0% /mnt
Regards, Mickey
--
(__)
(@@) Andreas S. Wetzel Mail: mickey@deadline.snafu.de
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