Copy 70G Filesystem

[brian_31]

I have to copy a 70G filesystem from one machine to another. what would be a good way?

Thanks

Brian

[Steven E. Protter]

Shalom Brian,

Best: fbackup frestore.

Not as good
scp -rp /fsname/* newhost:/fsname

Even less reliable
rcp -rp /fsname/* newhost:/fsname

SEP

[Steven E. Protter]

Shalom Brian,

Best: fbackup frecover

Not as good
scp -rp /fsname/* newhost:/fsname

Even less reliable
rcp -rp /fsname/* newhost:/fsname

SEP

[Chan 007]

Can you also try NFS.

on mounting the source to target just use

find . -print |cpio -pmdv

Chan

[Pete Randall]

Brian,

As Steve suggests, probably the best way would be to backup/restore. I always tend to run into permissions issues when I try to copy, whether rcp, scp or cpio. You might also want to look into vxdump.


Pete

[Robert-Jan Goossens]

Hi Brian,

This depends on you network speed.

100mbFD max 10MB per second
1000mb max 50MB per second

if you have a gigabit network 70GB will take about 30 minutes to copy.

# cd /orig_filesystem
# find . | cpio -ov | remsh server_name "cd /copy_filestem ; cpio -idvum "

Robert-Jan

[marvik]

Brian,

I just did a SAN migration using this

vxdump -0 -f- -b 1024 /src_fs | remsh '(cd /; /usr/sbin/vxrestore -b -xf -)'

just FYI incase u want to copy large FS in the same server use:
umount /fs1 (X series)
umount /fs2 ( Y series)

dd if=/dev/vgxx/rlvolx of=/dev/vgyy/rlvoly bs=1024k

Cheers!

marvik

[brian_31]

the filesystem in question is /oracle..how do i ensure the permission etc is same..please help

thanks

brian

[James R. Ferguson]

Hi Brian:

The use of 'fbackup'/'frecover' offers the ability to preserve any sparse files as sparse files, rather than inflating them at the destination. This should be another factor in your choice of copy methodology.

Regards!

...JRF...

[Geoff Wild]

I would use fbackup as well or rdist(rsync).


fbackup -i . -f - | (remsh REMOTESERVER ; frecover -r -f - ) &

With rdist, you need to setup some files:

cat myscript.sh
#! /bin/sh

# Keep the DRP copy of the oracle up-to-date.
# Currently the files are in:
#
# /oracle
#
# See the rdist(1M) distfile for a list of exclusions.

DRPDIR=/app/admin/drp
DRPHOST=svr0031

HOST=`/usr/bin/uname -n`
( su - oracle -c "rdist -f $DRPDIR/distfile oracle"; ) 2>&1 |\
tee $DRPDIR/drp.log 2>&1 |\
mailx -s "oracle rdist output" sysadm


# cat distfile
ORACLEDR = ( svr0031 )

#
# File systems to be copied over to the DR host.
# Don't use -R in install - so as not to remove files on destination host
ORACLE = /oracle

oracle: ( ${ORACLE} ) -> ( ${ORACLEDR} )
install -w ;


Rgds...Geoff

[brian_31]

Thanks

will this work..

on server A(source)

cd /oracle

fbackup -i . -f - | (remsh serverb ; frecover -r -f - /oracle ) &

Thanks

brian

[marvik]

vxdump/vxrestore keeps all permissions intact.

U can also use this :: it will keep all permission fine

# cd srcdir && fbackup -i . -f - | ( cd dstdir && frecover -Xsrf - )

Now its ur call,u have many options :)

[brian_31]

Hi All:

I am using the vxdump and initially it failed becasuse after -b itexpects 1024 on vxrestore..then it worked but the permisiions are not same. it writes as root..how wd i fix this? i have aborted the dump now..

Thanks

brian

[brian_31]

just did a maqn vxdump and there are no pointers to permissions..any ideas?

Thanks

brian