This should be a pretty simple one. I had a partition on a 4.0f box that I
wanted to copy over to a 4.0d box. I want to use the disk on the 4.0f box
for something else so I made a partition on the 4.0d box, mounted the 4.0f
partition to /mnt via nfs and ran:
tar -cvpf - /mnt | ( cd /usr/newpartition && tar -xvpf - )
This copied everything over to the new partition. Now, I want to be sure
that everything got copied over and that the integrity of the data in
intact. I did a df -k and got:
Filesystem 1024-blocks Used Available Capacity Mounted on
/dev/rz1a 244891 54461 165940 25% /
/proc 0 0 0 100% /proc
/dev/rz1g 3914988 1796681 1726808 51% /usr
/dev/rz0g 4054823 2473054 1176286 68% /usr/stuff
/dev/rz6c 4102391 1222772 2469379 34% /usr/newpartition
4.0fAlpha:/mnt 7091761 1222781 5159803 20% /mnt
as you can see, the /usr/newpartition and the /mnt partition differ in size
by 9 Kbytes. I ran a diff and got:
/> diff -r /mnt /usr/newpartition
File /mnt/data/socket/trv is a unknown while file
/usr/newpartition/data/socket/trv is a regular file
File /mnt/data/socket/uoa is a unknown while file
/usr/newpartition/data/socket/uoa is a regular file
So then I did:
/mnt/data/socket> ls -l /mnt/data/socket
total 0
srw-rw---- 1 root system 0 Jan 7 2000 trv
srw-rw---- 1 root system 0 Jan 12 2000 uoa
/mnt/data/socket> ls -l /usr/newpartition/data/socket
total 0
-rw-rw---- 1 root system 0 Jan 7 2000 trv
-rw-rw---- 1 root system 0 Jan 12 2000 uoa
Now, these are the only files that showed up after the diff and they don't
have any size difference. So, why is there the discrepancy in size? Does
this have to do with dissimilar disk geometry? I also did df -k on the 4.0f
machine in case nfs was the culprit, but it reported the same size. Can
anyone explain to me why the difference? Was there a better way to copy the
partition data? Is there a better way to compare the directory structures?
Thanks!
Trevor Osatchuk
Process Solutions Canada Ltd.
Support and Integration Analyst
(780) 452-2227 Ext. 286
trevor.osatchuk_at_pscl.com
Any man whose errors take ten years to correct is quite a man.
- J. Robert Oppenheimer, speaking of Albert Einstein
Received on Wed Sep 05 2001 - 00:12:00 NZST