strange dump(8) behavior
Michael Reifenberger
mike at Reifenberger.com
Wed Oct 6 23:54:51 PDT 2004
Hi,
I have -current as of Sun Sep 26 16:10:32 CEST 2004 and two identical ata disks:
ad0: 58644MB <IC35L060AVV207-0/V22OA63A> [119150/16/63] at ata0-master UDMA100
ad1: 58644MB <IC35L060AVV207-0/V22OA63A> [119150/16/63] at ata0-slave UDMA100
When using 'dump 0ua -f /dev/null -L -C32 /' (mounted from ad0s1a) I get:
...
DUMP: Date of this level 0 dump: Thu Oct 7 07:50:30 2004
DUMP: Date of last level 0 dump: the epoch
DUMP: Dumping snapshot of /dev/ad0s1a (/) to /dev/null
DUMP: mapping (Pass I) [regular files]
DUMP: Cache 32 MB, blocksize = 65536
^^^^^ ^^^^^
DUMP: mapping (Pass II) [directories]
...
When using 'dump 0ua -f /dev/null -L -C32 /dev/ad1s1a' I get:
...
DUMP: WARNING: -L ignored for read-only filesystem.
^^ (this is documented and not the problem) ^^
DUMP: Date of this level 0 dump: Thu Oct 7 08:30:43 2004
DUMP: Date of last level 0 dump: the epoch
DUMP: Dumping /dev/ad1s1a to /dev/null
DUMP: Cache 0 MB, blocksize = -724252476
^^^^ ^^^^^^^^^^
DUMP: mapping (Pass I) [regular files]
...
Hmm. How comes the bogus Cache and blocksize?
######################################################
fdisk, bsdlabel and dumpfs follows in case it matters:
totum# fdisk ad0
******* Working on device /dev/ad0 *******
parameters extracted from in-core disklabel are:
cylinders=119150 heads=16 sectors/track=63 (1008 blks/cyl)
Figures below won't work with BIOS for partitions not in cyl 1
parameters to be used for BIOS calculations are:
cylinders=119150 heads=16 sectors/track=63 (1008 blks/cyl)
Media sector size is 512
Warning: BIOS sector numbering starts with sector 1
Information from DOS bootblock is:
The data for partition 1 is:
sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
start 63, size 120101877 (58643 Meg), flag 80 (active)
beg: cyl 0/ head 1/ sector 1;
end: cyl 364/ head 11/ sector 63
The data for partition 2 is:
<UNUSED>
The data for partition 3 is:
<UNUSED>
The data for partition 4 is:
<UNUSED>
totum# fdisk ad1
******* Working on device /dev/ad1 *******
parameters extracted from in-core disklabel are:
cylinders=119150 heads=16 sectors/track=63 (1008 blks/cyl)
Figures below won't work with BIOS for partitions not in cyl 1
parameters to be used for BIOS calculations are:
cylinders=119150 heads=16 sectors/track=63 (1008 blks/cyl)
Media sector size is 512
Warning: BIOS sector numbering starts with sector 1
Information from DOS bootblock is:
The data for partition 1 is:
sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
start 63, size 120101877 (58643 Meg), flag 80 (active)
beg: cyl 0/ head 1/ sector 1;
end: cyl 1023/ head 254/ sector 63
The data for partition 2 is:
<UNUSED>
The data for partition 3 is:
<UNUSED>
The data for partition 4 is:
<UNUSED>
totum# bsdlabel -r ad0s1
# /dev/ad0s1:
8 partitions:
# size offset fstype [fsize bsize bps/cpg]
a: 113246192 16 4.2BSD 2048 16384 28552
b: 6855669 113246208 unused 0 0
c: 120101877 0 unused 0 0 # "raw" part, don't
edit
totum# bsdlabel -r ad1s1
# /dev/ad1s1:
8 partitions:
# size offset fstype [fsize bsize bps/cpg]
a: 113246208 0 4.2BSD 2048 16384 89
b: 6855669 113246208 swap
c: 120101877 0 unused 0 0 # "raw" part, don't
edit
magic 19540119 (UFS2) time Thu Oct 7 08:50:32 2004
superblock location 65536 id [ 4163e356 d9cc8189 ]
ncg 301 size 28311548 blocks 27420545
bsize 16384 shift 14 mask 0xffffc000
fsize 2048 shift 11 mask 0xfffff800
frag 8 shift 3 fsbtodb 2
minfree 8% optim time symlinklen 120
maxbsize 16384 maxbpg 2048 maxcontig 8 contigsumsize 8
nbfree 1774848 ndir 38953 nifree 6651944 nffree 75355
bpg 11761 fpg 94088 ipg 23552
nindir 2048 inopb 64 maxfilesize 140806241583103
sbsize 2048 cgsize 16384 csaddr 3000 cssize 6144
sblkno 40 cblkno 48 iblkno 56 dblkno 3000
cgrotor 206 fmod 0 ronly 0 clean 0
avgfpdir 64 avgfilesize 16384
flags soft-updates
fsmnt /
volname swuid 0
magic 11954 (UFS1) time Wed Oct 6 20:58:25 2004
id [ 3e39983d 5558fe9b ]
ncg 311 size 28311552 blocks 27871165
bsize 16384 shift 14 mask 0xffffc000
fsize 2048 shift 11 mask 0xfffff800
frag 8 shift 3 fsbtodb 2
minfree 8% optim time symlinklen 60
maxbpg 4096 maxcontig 7 contigsumsize 7
nbfree 1809356 ndir 38721 nifree 6551035 nffree 135882
cpg 89 bpg 11392 fpg 91136 ipg 22400
nindir 4096 inopb 128 nspf 4 maxfilesize 1126174852055039
sbsize 2048 cgsize 16384 cgoffset 1024 cgmask 0xffffffff
csaddr 1424 cssize 6144
rotdelay 0ms rps 60 trackskew 0 interleave 1
nsect 4096 npsect 4096 spc 4096
sblkno 8 cblkno 16 iblkno 24 dblkno 1424
cgrotor 208 fmod 0 ronly 0 clean 1
avgfpdir 64 avgfilesize 16384
flags soft-updates
fsmnt /
volname swuid 0
Bye/2
---
Michael Reifenberger, Business Development Manager SAP-Basis, Plaut Consulting
Comp: Michael.Reifenberger at plaut.de | Priv: Michael at Reifenberger.com
http://www.plaut.de | http://www.Reifenberger.com
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