Where'd my disk space go? (more info)

From: George Gallen <ggallen_at_slackinc.com>
Date: Tue, 27 Jun 2000 10:25:51 -0400

After I restored the data that resided on one partition of
the rz28 (apx 1gb) onto the partition of rz1df (apx 4gb)
I ran (du -k -s) and it showed 2.7gb. Now that 2.7gb of
files came from a filesystem of about 1gb by doing a
cp -Rp rz28partition rz1dfpartition.

Would changing the partition size from 1gb to 4gb, change
the minimum amount of drive space required for "each" file
that much it would increase in size by 1.7gb?

Yes, I do realize these drives are not partitioned for their
full capacity, as some have pointed out.

Thanks
George

>-----Original Message-----
>From: George Gallen [mailto:ggallen_at_slackinc.com]
>Sent: Monday, June 26, 2000 10:58 PM
>To: 'tru64-unix-managers_at_ornl.gov'
>Subject: Where'd my disk space go?
>
>
>Is this "problem" related to an increase in inodes?
>
>I replaced a 2.1gb with 2 filesystems (ufs) each apx 1gb each
>with a 9.1 gb with 2 filessystems (ufs) each apx 4gb each
>
>Replaced rz28's with rz1df's
>
>Now my 2.1 filesystems were about 80 & 90 % full when I
>replaced the drives
>Now my 9.1 filesystems are about 50 & 70 % full.
>
>Why didn't the new filesystems go to around 20 & 25 % full? I increased
>the avail space by a factor of 4, wouldn't the % of used space decrease
>by a factor of 4?
>
>sample disklabel from the rz28 still on the system:
>
># /dev/rrz1a:
>type: SCSI
>disk: RZ28B
>label:
>flags:
>bytes/sector: 512
>sectors/track: 99
>tracks/cylinder: 16
>sectors/cylinder: 1584
>cylinders: 2595
>sectors/unit: 4110480
>rpm: 3600
>interleave: 1
>trackskew: 0
>cylinderskew: 0
>headswitch: 0 # milliseconds
>track-to-track seek: 0 # milliseconds
>drivedata: 0
>
>8 partitions:
># size offset fstype [fsize bsize cpg]
> a: 131072 0 unused 1024 8192 #
>(Cyl. 0 - 82*)
> b: 401408 131072 unused 1024 8192 #
>(Cyl. 82*- 336*)
>
> c: 4110480 0 unused 1024 8192 #
>(Cyl. 0 - 2594)
> d: 1191936 532480 unused 1024 8192 # (Cyl. 336*-
>1088*)
> e: 1191936 1724416 unused 1024 8192 # (Cyl. 1088*-
>1841*)
> f: 1194128 2916352 unused 1024 8192 # (Cyl. 1841*-
>2594*)
> g: 1787904 532480 4.2BSD 1024 8192 16 # (Cyl. 336*-
>1464*)
> h: 1790096 2320384 4.2BSD 1024 8192 16 # (Cyl. 1464*-
>2594*)
>
>
>sample disklabel from the rz1df on the system now:
>
># /dev/rrz2a:
>type: SCSI
>disk: RZ1DF-CB
>label:
>flags: dynamic_geometry
>bytes/sector: 512
>sectors/track: 168
>tracks/cylinder: 20
>sectors/cylinder: 3360
>cylinders: 5273
>sectors/unit: 17773524
>rpm: 7200
>interleave: 1
>trackskew: 28
>cylinderskew: 72
>headswitch: 0 # milliseconds
>track-to-track seek: 0 # milliseconds
>drivedata: 0
>
>8 partitions:
># size offset fstype [fsize bsize cpg]
> a: 131072 0 4.2BSD 1024 8192 16 #
>(Cyl. 0 - 39*)
> b: 262144 131072 unused 0 0 #
>(Cyl. 39*- 117*)
>
> c: 17773524 0 unused 0 0 # (Cyl. 0 -
>5289*)
> d: 0 0 unused 0 0 #
>(Cyl. 0 - -1)
> e: 0 0 unused 0 0 #
>(Cyl. 0 - -1)
> f: 0 0 unused 0 0 #
>(Cyl. 0 - -1)
> g: 8690154 393216 4.2BSD 1024 8192 16 # (Cyl. 117*-
>2703*)
> h: 8690154 9083370 4.2BSD 1024 8192 16 # (Cyl. 2703*-
>5289*)
>
>Currently running 3.2c
>
>Thanks
>George
>
>
>
>
>
>George Gallen
>Senior Programmer/Analyst
>Accounting/Data Division
>ggallen_at_slackinc.com
>ph:856.848.1000 Ext 220
>
>SLACK Incorporated - An innovative information, education and
>management
>company
>http://www.slackinc.com
>
Received on Tue Jun 27 2000 - 14:27:14 NZST

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