backup a big partition using cpio

[ccc]

hi

Howto backup a 40GB /usr partition from the old freeBSD 4.6 system using cpio?
cpio cannot deal with files > 2GB
Is it any way to split the output to many backup files?

 

[jem]

dump(8) to gzip to a file

 

[ccc]

Thx, but I'm wondering, is it any way using cpio?

 

[graudeejs]

Keep it simple use tar, dump/restore, cp

[You can split/join files with dd, but you can do lots of damage as well, if you aren't careful. But I didn't tell you that]

 

[Beastie]

Is it any way to split the output to many backup files?

Pipe the output to split(1)'s standard input (i.e. the "dash").

 

[ccc]

Thx, but ist it correct this command to backup the whole /usr partition and split into 1GB files?

# cd / ; find ./usr -depth -print -xdev | cpio -ovfB | gzip -c | split -b 1000m > /mnt/backup_usr.gz &

 

[graudeejs]

NO, use dump/restore

http://forums.freebsd.org/showthread.php?t=185

 

[Beastie]

Thx, but ist it correct this command to backup the whole /usr partition and split into 1GB files?

# cd / ; find ./usr -depth -print -xdev | cpio -ovfB | gzip -c | split -b 1000m > /mnt/backup_usr.gz &

Do not use the final > /mnt/backup_usr.gz. Use - /mnt/backup_usr.gz_ instead. And split(1) supports gigabytes so -b 1g should work. The underscore is used for more clarity.

# cd / ; find ./usr -depth -print -xdev | cpio -ovfB | gzip -c | split -b 1g - /mnt/backup_usr.gz_


But as already mentioned dump/restore may be easier (and faster).

 

[ccc]

Thx a lot, it works well now!