Date: Fri, 10 Mar 1995 10:42:06 -0800 (PST) From: bmk@dtr.com To: questions@FreeBSD.org Subject: shutdown & bogus disklabels Message-ID: <199503101842.KAA06402@dtr.com>
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I've been having an annoying problem on shutdown for awhile..
After doing a shutdown -r, on reboot the system gives me an
"Invalid disklabel on sd2" (or something like that). Fsck then fails
with an unexpected consistancy (naturally). I can work around this by
immediately rewriting the disklabel, and fscking the filesystem on that
disk. I can then bring the system up to multi-user.
This happens every time I shut down - but only on sd2. sd0, sd1, and
sd3 never have any problems, and I have no other problems with that
disk. sd2 contains only a single ufs filesystem, no swap and no
filesystems for other operating systems. It was partitioned and
disklabeled in a similar manner to sd3 - using the whole disk, with the
ufs filesystem starting at offset 1.
Any ideas on what might be happening here? Am I suffering from brain
damage?
The disktab entry is as follows:
cdc_94171-327|sd2|SCSI disk on sd2:\
:dt=SCSI:ty=winchester:\
:nc#312:ns#32:nt#64:\
:se#512:\
:pa#638975:oa#1:ta=4.2BSD:ba#8192:fa#1024:\
:pc#638975:oc#1:\
:pd#638976:od#0:
fdisk /dev/rsd2d reports the following:
******* Working on device /dev/rsd2d *******
parameters extracted from in-core disklabel are:
cylinders=312 heads=64 sectors/track=32 (2048 blks/cyl)
parameters to be used for BIOS calculations are:
cylinders=312 heads=64 sectors/track=32 (2048 blks/cyl)
Warning: BIOS sector numbering starts with sector 1
Information from DOS bootblock is:
The data for partition 0 is:
sysid 165,(FreeBSD/NetBSD/386BSD)
start 2048, size 636928 (311 Meg), flag 80
beg: cyl 1/ sector 1/ head 0;
end: cyl 311/ sector 32/ head 63
The data for partition 1 is:
<UNUSED>
The data for partition 2 is:
<UNUSED>
The data for partition 3 is:
<UNUSED>
and disklabel -r /dev/rsd2d reports thusly:
type: SCSI
disk: cdc_94171-327
label:
flags:
bytes/sector: 512
sectors/track: 32
tracks/cylinder: 64
sectors/cylinder: 2048
cylinders: 312
rpm: 3600
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0 # milliseconds
track-to-track seek: 0 # milliseconds
drivedata: 0
4 partitions:
# size offset fstype [fsize bsize bps/cpg]
a: 638975 1 4.2BSD 1024 8192 0 # (Cyl. 0*-311*)
c: 638975 1 unused 0 0 # (Cyl. 0*-311*)
d: 638976 0 unused 0 0 # (Cyl. 0 -311)
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