Date: Tue, 07 Dec 1999 10:59:36 +0100 (CET) From: Micke Josefsson <mj@isy.liu.se> To: keith@mail.telestream.com Cc: freebsd-questions@FreeBSD.ORG Subject: RE: /dev/rsa0 Message-ID: <XFMail.991207105936.mj@isy.liu.se> In-Reply-To: <Pine.LNX.4.10.9912061507540.6778-100000@mail.telestream.com>
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On 06-Dec-99 keith@mail.telestream.com wrote:
> In the dump man page it states;
> "/dev/rsa0 default tape unit to dump to"
> I am wanting to use a Sony Super Station tape system as a device to dump
> to. Would the /dev/rsa0 change to some other dev? If not, how does the
> system know to call it rsa0? The unit is an IDE device.
> Realy green on tape systems and FreeBSD so show some sympathy. :)
> Any RTFM URL's would be greatly apreciated, or some simple advise on tape
> storage and FreeBSD would be nice, or comments/don't do it's. Any info is
> great.
>
> Thanks a million.
> Keith
Is the Sony drive recognized during boot? (the command dmesg, shows you this).
If it is recognized as, say, /dev/wd1 (for the sake of the argument) then you
can dump a complete partition as
dump -0uaf /dev/wd1 /dev/wd0s1a
The flags are: 0 - make a total as opposed to an incremental backup
a - go on until the tape is at the end (unless the backup
is copmplete by then)
u - log successful dumps to /etc/dumpdates
f - dump to device specified (can actually be a file too!)
Note that you can only dump partitions with dump, for files and/or directories
you use the tar command.
And if your drive also exists in a version with an 'r' prepended (a la
/dev/rwd1), this is a rewinding device - it rewinds after completion, the
device /dev/nrwd1 is a non rewinding device and simply stops where it is when
the dump command is finished. In the latter case you can have multiple dumps on
one tape easily, in the former you would have to scan forward to end of
recording and then dump anew.
(For SCSI the command 'mt fsf 1' spins 1 record forward, ie. one dump.)
/Micke
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Michael Josefsson, MSEE
mj@isy.liu.se
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