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Date:      Sun, 4 Jun 2006 17:36:41 -0400
From:      "Dave Stephens" <hsoftdev17@gmail.com>
To:        "freebsd-fs@freebsd.org" <freebsd-fs@freebsd.org>
Subject:   capacity issue?
Message-ID:  <6845d25a0606041436j5f964aeeo7bc02b61b98b790a@mail.gmail.com>

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OS Version:  FreeBSD 6.1

It seems like the capacity of my drive is being reported incorrectly
by df.  I'm not sure if this is a specific issue with the SATA drive
or controller in the server, but I figured I would ask around.  There
is only 1 physical drive in this server.

SATA Drive
--------------------------------------------------------------------------------
ad8: 286168MB <Seagate ST3300822AS 3.AAD> at ata4-master SATA150

SATA Controllers
--------------------------------------------------------------------------------
atapci1: <SiS 180 SATA150 controller> port
0xeff0-0xeff7,0xefe4-0xefe7,0xefa8-0xefaf,0xefe0-0xefe3,0xef
90-0xef9f irq 17 at device 5.0 on pci0
ata2: <ATA channel 0> on atapci1
ata3: <ATA channel 1> on atapci1
atapci2: <SiI 3112 SATA150 controller> port
0xefa0-0xefa7,0xef8c-0xef8f,0xef80-0xef87,0xef88-0xef8b,0xe
f60-0xef6f mem 0xfebfac00-0xfebfadff irq 17 at device 9.0 on pci0
ata4: <ATA channel 0> on atapci2
ata5: <ATA channel 1> on atapci2

Note that atapci1 is built onto the motherboard and doesn't seem to be
supported by FreeBSD at this time (no HDDs can be found during install
when they are attached to it.)

Mounting (dmesg)
--------------------------------------------------------------------------------------------
swapon: adding /dev/ad8s2b as swap device
Starting file system checks:
/dev/ad8s1a: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/ad8s1a: clean, 221765 free (2981 frags, 27348 blocks, 1.2% fragmentation)
/dev/ad8s4d: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/ad8s4d: clean, 9668716 free (980 frags, 1208467 blocks, 0.0% fragmentation)
/dev/ad8s4f: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/ad8s4f: clean, 51380314 free (18 frags, 6422537 blocks, 0.0% fragmentation)
/dev/ad8s3d: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/ad8s3d: clean, 28290946 free (32938 frags, 3532251 blocks, 0.1%
fragmentation)
/dev/ad8s3e: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/ad8s3e: clean, 9904253 free (1589 frags, 1237833 blocks, 0.0%
fragmentation)
/dev/ad8s4e: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/ad8s4e: clean, 37032718 free (998 frags, 4628965 blocks, 0.0%
fragmentation)

output from df
---------------------------------------------------------------------------------
Filesystem     Size    Used   Avail Capacity  Mounted on
/dev/ad8s1a    494M     61M    394M    13%    /
devfs          1.0K    1.0K      0B   100%    /dev
/dev/ad8s4d     19G    497M     17G     3%    /home
/dev/ad8s4f     98G    1.4G     89G     2%    /photo
/dev/ad8s3d     57G    2.8G     49G     5%    /usr
/dev/ad8s3e     19G     46M     17G     0%    /var
/dev/ad8s4e     76G    5.0G     65G     7%    /www

last time i checked (just as examples)
98G - 1.4G is not 89G  (/photo)
57G - 2.8G is not 49G  (/usr)
76G - 5.0G is not 65G  (/www)

Can anyone tell me what's going on here?

Dave



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