Date: Wed, 7 Nov 2001 17:18:27 -0000 From: "Scott Mitchell" <scott@uk.freebsd.org> To: <freebsd-questions@freebsd.org> Subject: Dump/restore from Linux to FreeBSD machine Message-ID: <000701c167b0$380ff740$1680010a@msapama.apama.com>
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As the subject says, I'm trying to backup the contents of a large RAID array
on a Debian Linux machine and restore it onto an even larger RAID on a
FreeBSD box. I figured something like this would do the job:
kakapo:/raid# dump -0 -f - /raid/export/cvs | \
ssh root@kokako 'cd /raid && restore -t -f - > restore.log'
This is just a test -- that's why I'm just dumping a subdirectory and having
restore print the table of contents rather than actually restore anything.
I get the same results if I try to dump the whole filesystem.
When I run this, I get:
DUMP: Date of this level 0 dump: Wed Nov 7 17:07:50 2001
DUMP: Date of last level 0 dump: the epoch
DUMP: Dumping /dev/md0 (/raid (dir /export/cvs)) to standard output
DUMP: Label: none
DUMP: mapping (Pass I) [regular files]
cannot open /dev/tty: Device not configured
DUMP: mapping (Pass II) [directories]
DUMP: estimated 2952166 tape blocks.
DUMP: Volume 1 started at: Wed Nov 7 17:08:13 2001
Level 0 dump of /raid (dir /export/cvs) on kakapo:/dev/md0
Label: none
DUMP: dumping (Pass III) [directories]
DUMP: dumping (Pass IV) [regular files]
DUMP: Broken pipe
DUMP: The ENTIRE dump is aborted.
This was run on the Linux machine. Note that I had to enter a password to
ssh somewhere in there.
I've tried dd on both sides of the pipe to reblock the dump correctly,
likewise I've tried the -b option to dump and restore to make sure they're
making the same assumptions. Same result -- dump dies with a broken pipe.
Interestingly, if I dump to a file on the FreeBSD side, then restore from
that locally, all is well. So it doesn't look like some incompatibility
between dump formats.
What am I doing wrong? I can probably make this work by dumping the
top-level directories individually to files and restoring locally, or
dumping the whole lot to tape. But I'd *really* like to know why this is
happening and how to fix it.
Many thanks in advance,
Scott
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