Subject: dump, dd, ssh oh my!
From: Matthew Schumacher (schu@schu.net)
Date: Tue Jun 25 2002 - 16:16:13 AKDT
Aklugers,
I seem to having trouble with doing a network backup using ssh and dump.
According to my unix backup book and several other resources on the
internet this should work:
host2# dump -0 -b 32 -f - /| ssh host1 "dd of=/dev/nst0 bs=32k"
Instead I get:
===============================================================
DUMP: Date of this level 0 dump: Tue Jun 25 15:52:16 2002
DUMP: Dumping /dev/sda2 (/) to standard output
DUMP: Added inode 8 to exclude list (journal inode)
DUMP: Added inode 7 to exclude list (resize inode)
DUMP: Label: /
DUMP: mapping (Pass I) [regular files]
DUMP: mapping (Pass II) [directories]
DUMP: estimated 168473 tape blocks.
DUMP: Volume 1 started with block 1 at: Tue Jun 25 15:52:17 2002
DUMP: dumping (Pass III) [directories]
DUMP: dumping (Pass IV) [regular files]
DUMP: 58.18% done at 326 kB/s, finished in 0:03
DUMP: Volume 1 completed at: Tue Jun 25 16:01:11 2002
DUMP: Volume 1 174528 tape blocks (170.44MB)
DUMP: Volume 1 took 0:08:54
DUMP: Volume 1 transfer rate: 326 kB/s
DUMP: 174528 tape blocks (170.44MB)
DUMP: finished in 534 seconds, throughput 326 kBytes/sec
DUMP: Date of this level 0 dump: Tue Jun 25 15:52:16 2002
DUMP: Date this dump completed: Tue Jun 25 16:01:11 2002
DUMP: Average transfer rate: 326 kB/s
DUMP: DUMP IS DONE
2+43556 records in
2+43556 records out
===============================================================
Notice the odd dd output on the bottom and also the terrible throughput.
Both dd and dump are set to use a 32k block. Here is what I get when
I try to restore -b 32 -f /dev/st0 -i: "restore: Tape blocksize is too
large, use '-b 32'"
Anyway, I can do it locally without issue:
===============================================================
host1# dump -0u -b 32 -f - / | dd of=/dev/nst0 bs=32k
DUMP: Date of this level 0 dump: Tue Jun 25 15:46:46 2002
DUMP: Dumping /dev/sda2 (/) to standard output
DUMP: Added inode 8 to exclude list (journal inode)
DUMP: Added inode 7 to exclude list (resize inode)
DUMP: Label: /
DUMP: mapping (Pass I) [regular files]
DUMP: mapping (Pass II) [directories]
DUMP: estimated 162967 tape blocks.
DUMP: Volume 1 started with block 1 at: Tue Jun 25 15:46:47 2002
DUMP: dumping (Pass III) [directories]
DUMP: dumping (Pass IV) [regular files]
DUMP: Volume 1 completed at: Tue Jun 25 15:47:14 2002
DUMP: Volume 1 168256 tape blocks (164.31MB)
DUMP: Volume 1 took 0:00:27
DUMP: Volume 1 transfer rate: 6231 kB/s
DUMP: 168256 tape blocks (164.31MB)
DUMP: finished in 27 seconds, throughput 6231 kBytes/sec
DUMP: Date of this level 0 dump: Tue Jun 25 15:46:46 2002
DUMP: Date this dump completed: Tue Jun 25 15:47:14 2002
DUMP: Average transfer rate: 6231 kB/s
DUMP: DUMP IS DONE
2629+0 records in
2629+0 records out
host1# restore -b 32 -f /dev/st0 -i
restore >
===============================================================
Anyone have any ideas?
schu
-- "We'll need 2000 crickets, 4 cans of Easy Cheese, and the fluid from 18 glowsticks for this plan to work..."--------- To unsubscribe, send email to <aklug-request@aklug.org> with 'unsubscribe' in the message body.
This archive was generated by hypermail 2a23 : Tue Jun 25 2002 - 16:18:41 AKDT