davec@shared.uucp (Dave Close) (02/28/91)
System: 386 with Intel SVr4v2. No tape drive.
Problem: Backup. A 2 GB tape is available on the net. I backup with the
command,
cd /; find . -print | cpio -o | rsh tapesys dd of=/dev/rmt1 obs=51200
It works reasonably well. I try to verify the backup with the command,
rsh tapesys dd if=/dev/rmt1 | cpio -itv
I quickly abort the verify because disk activity and the messages output
indicate that cpio is actually restoring the files, NOT just displaying
their names. I get messages about files being skipped since the disk version
is newer and messages about an inability to link files which are already
linked. This doesn't seem right! The man page for cpio clearly says that
"no files are created" when using the -t switch.
Is this a known bug or something I'm doing wrong?
BTW, the man page for rsh on my system is linked to sh, that is, it is the
man page for a restricted shell. But the rsh command is the expected remote
shell. Seems like another minor slip-up.
--
Dave Close Shared Financial Systems Dallas
davec@shared.com vmail +1 214 458 3850
uunet!shared!davec fax +1 214 458 3876
My comments are my opinions and may not be shared by Shared.andyc@bucky.intel.com (Andy Crump) (03/01/91)
>>>>> On 27 Feb 91 21:59:22 GMT, davec@shared.uucp (Dave Close) said:
Dave> System: 386 with Intel SVr4v2. No tape drive.
Dave> Problem: Backup. A 2 GB tape is available on the net. I backup with the
Dave> command,
Dave> cd /; find . -print | cpio -o | rsh tapesys dd of=/dev/rmt1 obs=51200
Dave> It works reasonably well. I try to verify the backup with the command,
Dave> rsh tapesys dd if=/dev/rmt1 | cpio -itv
Dave> I quickly abort the verify because disk activity and the messages output
Dave> indicate that cpio is actually restoring the files, NOT just displaying
Dave> their names. I get messages about files being skipped since the disk version
Dave> is newer and messages about an inability to link files which are already
Dave> linked. This doesn't seem right! The man page for cpio clearly says that
Dave> "no files are created" when using the -t switch.
Dave> Is this a known bug or something I'm doing wrong?
I'm not sure. This is not a bug in the next version at least. I
tried it just as you described. It works for me, even if I touch some
of the files after backing them up. I did it as a mortal user rather
than root just to make sure and it work fine for me. You are correct
in that the -t should not restore any files! If it was a but in
SVR4.0.2 it doesn't seem to be a bug in the next version. If you have
more info, I would be happy to try it out.
Dave> BTW, the man page for rsh on my system is linked to sh, that is, it is the
Dave> man page for a restricted shell. But the rsh command is the expected remote
Dave> shell. Seems like another minor slip-up.
Yup. But this is the Online Manual package that is not normally a
part of the USL SVR4 distribution. This was from the now defunct IMSO
group within Intel. I don't believe there is any support for that
package. You can check by calling 1-800-INTEL4U.
--
-- Andy Crump
...!tektronix!reed!littlei!andyc | andyc@littlei.intel.com
...!uunet!littlei!andyc | andyc@littlei.uu.net
Disclaimer: Any opinions expressed here are my own and
not representive of Intel Corportation.