On 06/14/2018 08:07 AM, Bob Goodwin wrote:
> I assembled an NFS server about a month ago and it seems to work
> properly, has been in use continuouslysince then ...
> 
> However I installed two 3TB discs and only enabled /dev/sda. I would
> like to simply copy data from time to time from /dev/sda to /dev/sdb.
> 
> I cant work out how to accomplish this and am about at the point of just
> moving the second disk into a works station and doing an rsync
> occasionally for a back up. I would prefer to keep the /sda/sdb drive in
> the server. Presently the server has in fstab:
> 
> [bobg@ASRock-J3455M ~]$ cat /etc/fstab
> 
> #
> # /etc/fstab
> # Created by anaconda on Thu Apr 12 16:33:43 2018
> #
> # Accessible filesystems, by reference, are maintained under '/dev/disk'
> # See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
> #
> /dev/mapper/fedora-root / ext4    defaults        1 1
> UUID=d9715d27-426c-4e6f-8741-ea052fe7bab2 /boot                  
> ext4    defaults        1 2
> UUID=1128-BE6B          /boot/efi vfat    umask=0077,shortname=winnt 0 2
> /dev/mapper/fedora-home /home ext4    defaults        1 2
> /dev/mapper/fedora-swap swap
> 
> and for exports:
> 
> [bobg@ASRock-J3455M ~]$ cat /etc/exports
> /home    192.168.1.0/24(rw,no_root_squash)
> 
> #/exports/home
> 192.168.1.0/24(rw,sync,insecure,no_root_squash,no_subtree_check,fsid=0)
> 
> # /exports   192.168.1.0/255.255.255.0(ro,sync)
> # /exports/home/public/192.168.1.0/255.255.255.0(rw,sync)
> # /exports 192.168.54.0/255.255.255.0(ro,sync)
> 
> Can anyone tell me what I need to do or point to an instruction for tobe
> able to access the second disk?

Mount the second drive somewhere on the server and you can do an
rsync locally to back up files. It appears your /dev/sda thing is
an LVM drive with one volume group ("fedora") and three volumes ("root",
"home" and "swap"). You appear to be exporting the home volume for NFS.

So, partition the second drive, create a mountpoint on the server for
the second drive and mount it there. For example:

        # mkdir /media/backups
        # mount /dev/sdb1 /media/backups

You could then do:

        # rsync -a /home /media/backups

and you'd rsync everything from what you're exporting to the second
drive. I do a similar thing for backups. I mount an external USB drive
to /media/Backups and run a command such as:

        # nice -n 19 /bin/rsync -aS --exclude-from=/etc/skipdirs.rsync /
/media/Backups

Where the content of /etc/skipdirs.rsync is:

        /proc/*
        /sys/*
        /dev/*
        /media/**
        /mnt/**
        /var/log/journal/*

So I don't back up things that are transient or things already backed
up.

Just a suggestion.
----------------------------------------------------------------------
- Rick Stevens, Systems Engineer, AllDigital    ri...@alldigital.com -
- AIM/Skype: therps2        ICQ: 226437340           Yahoo: origrps2 -
-                                                                    -
- If at first you don't succeed, quit. No sense being a damned fool! -
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