There is a dump and restore available in the add-ons directory, you can
download and customize those in fairly easily. Most tar users would pipe
it through gzip to reduce the file size. Some would use afio instead as
when you pipe tar through gzip, a tape error will make the rest of the
file unreadable. Personally, I feel safer with tar than dump/restore as
dump/restore presumes the same partition/filesystem layout and size- you
can't restore one filesystem into 2 smaller disks, say. With tar, it is
very flexible. Also, I find that 90% of the time, what I *really* need
the backup for is to recover 1 file that I blew away. With dump restore
that is painful. I just do tar (or cpio, or pax) backups, and I tolerate
the performance hit (of course, dump/restore is much faster than tar etc.)
and I trust modern tape drives not to have unrecoverable errors (actually,
my tape drive has hardware compression, by-the-block.) (I should write a
block-by-block compressor for tar to pipe through! Actually, bzip2 is
block based, it might be that if you use bzip2, you could get past a bad
tape block) (probably you would need bzip2recover, bzip2 is too slow for
tape backup anyway) (but I could write something that *separately* gzips
16K blocks, as a tar filter, to get around that concern...)
Let me know if you take the dump/restore customization route and have any
trouble. -Tom
On Thu, 26 Aug 1999, John Rioux wrote:
> Date: Thu, 26 Aug 1999 21:31:18 GMT
> From: John Rioux <[EMAIL PROTECTED]>
> To: [EMAIL PROTECTED]
> Subject: Level 0 dumps using tomsrtbt ?
>
> Hello Tom,
> I have just downloaded tomsrtbt-1.7.140 and built my first rescue
> diskette, thank you now I can sleep at night. I am a new Linux admin
> my previous UNIX experience is Solaris on SUN platform. I see that you
> boot disk does not have dump and restore on it. Is there some other
> utility on the diskette that will do the same. I need something that
> will backup and restore a complete file system to 4mm DAT tape. I have
> use tar but it seems to create very large files. Do you have any
> suggestions ?
>
> Thanks in advance for your valuable time.
>
> Best Regards,
> John Rioux
> Entrata Communications Corp.
> Betany CT
>
>
>
