On Fri, 2008-05-09 at 15:36 -0400, Ray Leventhal wrote:

Hi all,

Excuse the question as I'm sure those more experienced will find it simple.

I've a CentOS5.1 box with six physical drives, two of which are used for nightly rsync backups. Contents of /etc/mtab, /etc/fstab, df and a brief narrative follow:

====================================================== # cat ./fstab /dev/VolGroup00/LogVol00 / ext3 defaults 1 1 LABEL=/home /home ext3 defaults 1 2 LABEL=/home/adminusers /home/adminusers ext3 defaults 1 2 LABEL=/boot /boot ext3 defaults 1 2 tmpfs /dev/shm tmpfs defaults 0 0 devpts /dev/pts devpts gid=5,mode=620 0 0 sysfs /sys sysfs defaults 0 0 proc /proc proc defaults 0 0 /dev/VolGroup00/LogVol01 swap swap defaults 0 0 ====================================================== # cat ./mtab /dev/mapper/VolGroup00-LogVol00 / ext3 rw 0 0 proc /proc proc rw 0 0 sysfs /sys sysfs rw 0 0 devpts /dev/pts devpts rw,gid=5,mode=620 0 0 /dev/sdc1 /home ext3 rw 0 0 /dev/sdd1 /home/adminusers ext3 rw 0 0 /dev/sda1 /boot ext3 rw 0 0 tmpfs /dev/shm tmpfs rw 0 0 none /proc/sys/fs/binfmt_misc binfmt_misc rw 0 0 sunrpc /var/lib/nfs/rpc_pipefs rpc_pipefs rw 0 0 ====================================================== # df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/VolGroup00-LogVol00 131G 4.7G 120G 4% / /dev/sdc1 271G 147G 111G 58% /home /dev/sdd1 271G 3.9G 253G 2% /home/adminusers /dev/sda1 99M 20M 74M 22% /boot tmpfs 442M 0 442M 0% /dev/shm ======================================================

Each night, in addition to our tape backup paradigm, an rsync script is run which mounts /dev/sdb1 on /mnt/sysinfo and copies system data from sda1 there. /dev/sdb1 is a 146GB drive. The script then mounts /dev/sde1 on /mnt/userdata for a copy of /home and /home/adminusers. /dev/sde1 is a wholly underutilized 300G drive.

I'd like to move the contents of /home/adminusers from /dev/sdd1 to /dev/sdc1 and use that underutilized drive elsewhere. What's the least invasive way of doing this given the hardware and partitioning on my system?

Thanks in advance,

---- mkdir /home/adminusers-temp cp -ar /home/adminusers /home/adminusers-temp umount /home/adminusers mv /home/adminusers-temp/* /home/adminusers rm -fr /home/adminusers-temp

then edit /etc/fstab and comment out /dev/sdd1 line and all should be good

Craig