At 3:56 PM +0000 11/21/05, Tom Brown wrote:
is it possible to do a mysql dump to more than 1 file? We will
shortly be needing to dump a db that will be in excess of 50gb so
will encounter file size issues
This is on 4.1.x and rhel 4
Probably the best approach - knowing nothing about your db - would be
to dump tables to separate files; you could write a pretty simple
script to do that.
Since mysqldump writes to stdout, you could pipe to a zip/bzip/gzip,
although that's unlikely to compress 50GB down to something most
unixes can handle (a safe size is 2GB):
mysqldump -uuser -p database | gzip > dump.gz
You could pipe to split (try 'man split'), which would split the
output into pieces by # of lines or # of bytes (eg; dump.001,
dump.002, ...) and then reassemble via cat. It would be nice to do
something like
mysql -uuser -ppassword database < `cat dump.*`
but I don't think that's possible. You'd have to reassemble the dump
file first, which means you might run into file size issues again.
Probably best to do table-by-table, piping to zip/bzip/gzip as well.
steve
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