[CentOS] Copying a live system

Leon Fauster
2016-05-03T14:33:32Z

Am 03.05.2016 um 15:55 schrieb Timothy Murphy <gayleard at
eircom.net>:
> I want to backup my current CentOS-7.2 system to another drive.
> Is it safe to copy the system while it is running?
> Eg by
> mount /dev/sdb5 /mnt
> rsync -HPaxvz /. /mnt/
> I've found contradictory advice on the web.



It depends, the running services should answer ... for a mysqld running system:

Delete the -x option above and add

--exclude /proc --exclude /sys --exclude /mnt --exclude /var/lib/mysql

and then

mysqldump --add-drop-table -c --create-options -x -u root -p -A >
mysqldump-$(date +%s).sql

for example ...

--
LF