From owner-freebsd-questions  Wed Aug  9  5: 2:20 2000
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Date: Wed, 9 Aug 2000 08:07:35 +0000
From: Alan Clegg <abc@bsdi.com>
To: Ben Weaver <bweaver@tranquility.net>
Cc: freebsd-questions@freebsd.org, freebsd-hackers@freebsd.org
Subject: Re: An sblock magic number is...
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Out of the ether, Ben Weaver spewed forth the following bitstream:

> $ df   
> Filesystem  1K-blocks     Used    Avail Capacity  Mounted on
> /dev/sd0s1a   3976982   909105  2749719    25%    /
> /dev/sd1s1e   3976982  3359343   299481    92%    /home
> /dev/sd2s1f    992751   817542    95789    90%    /var
> procfs              4        4        0   100%    /proc

> bash-2.03# ssh backup@tranq1 /sbin/dump -0a -f - /dev/sd0s1f | dd of=t1.var
>   DUMP: bad sblock magic number

Note that you are dumping /dev/sd0s1f and not /dev/sd2s1f.  /dev/sd0s1f does
not contain a valid filesystem, thus can't be dumped.

AlanC


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