clonehdd(8) Tools for system administration clonehdd(8)NAME
clonedd -- Tool for clone HDD on FreeBSD
SYNOPSISclonehdd -src=device -dst=device -swap=size [-safe] [-freespace=size]
[-fstab=device] [-force]
DESCRIPTION
Tool for copy partitions to another HDD. FreeBSD stores its data on
partitions, which incapsulated in slices. Soft, such as Partition
Magic, Acronis, etc. detect only slice, not real partitions on that
slice. CloneHDD correctly understand size diference between two HDD
and change size of each partition proportionally for filling entire
HDD.
OPTIONS
-src=device (REQUIRED)
Name of device (HDD) which contains original data. Eg. if path
to device is /dev/ad0, then you type only "ad0". CloneHDD will
keep SRC partition unchanged.
-dst=device (REQUIRED)
Name of device (HDD) which will contain your backup data. Eg. if
path to device is /dev/ad2, then you type only "ad2".
WARNING! ALL DATA ON THIS DEVICE WILL BE DESTROYED!
-swap=size (REQUIRED)
Size of new swap partition in MBytes.
-safe If defined, use safe-mode copying data. If there is minimum 50%
free space on partition, CloneHDD tries to copy data in safe
mode, even if "-safe" flag is unset. If free space is not
enough, CloneHDD copy data in unsafe mode. Also you will see a
warning message. If "safe" flag is set, CloneHDD will copy data
only in safe mode. If free space is not enough, CloneHDD will
skip copying this partition. See details below.
-freespace=size
Space in MBytes, reserved as free on SRC partition. Clonehdd
checks, if SRC partition have enough free space the following
way: (Data size) * 2 + (Freespace) < (Partition size). Default:
100MB.
-fstab=device
This value will be written in /etc/fstab file on DST partition.
Default: value from -src parameter.
-force Do not ask questions, such as "Are you sure?". Useful, when
CloneHDD start with crontab(1)
When safe mode is defined, CloneHDD makes image of partition, then
store it on the same partition in ".snap" directory and write it on DST
HDD. If non safe-mode defined, CloneHDD will copy data on the fly. See
dump(8) , flag "-L" for details.
DETAILS
First, CloneHDD checks if SRC and DST devices are present in system, if
you have enough free space. After theese checks, it drops all data on
DST HDD with dd(1), make filesystem with fdisk(8), bsdlabel(8) and
newfs(8). Then, CloneHDD mount each partition to /mnt/clone and copy
data. All data on SRC HDD will be untouched. Then CloneHDD modify
/etc/fstab file on /dev/DST HDD and set device names to value in -fstab
parameter. On DST HDD, root partition will be created file
"backup-mode". WARNING! All partitions on SRC HDD that you wish to
clone must be mounted. If you wish not to clone some partitions,
unmount them.
USING BACKUP HDD
If something wrong with your SRC HDD in future, you can take out cor‐
rupted SRC HDD and put reserve DST HDD on that place. Note, that you
must set correct value to -fstab parameter to boot FreeBSD correctly.
If you forget to turn off starting CloneHDD from crontab, script will
not run, because there is a file "/backup-mode" in root folder of
filesystem on cloned partition. Remove this file if you want to clone
such HDD as SRC partition.
CRONTAB
Tool works fine from crontab(1). Put line
clonehdd [parameters] -force >/dev/null
to /etc/crontab. All error messages will be sent to STDERR and you
receive mail from cron daemon with this information. All normal mes‐
sages will be sent to STDOUT and then dropped on /dev/null device.
RETURN VALUES
If CloneHDD failed to do something, it will exit with exit code 1. Oth‐
erwise, exit code will be zero. In version 2.0.2, CloneHDD does not
control if error occured in dump(8), restore(8) and rest external com‐
mands.
EXAMPLESclonehdd -src=ad0 -dst=ad2 -swap=1024
All data from /dev/ad0 will be copied to /dev/ad2. Each parti‐
tions size will be increased or decreased proportionally,
according to difference between 2 HDD. Only swap size will be
1024 MBytes. Theese are minimum parameters, that are required.
SEE ALSOdump(8), restore(8), crontab(1)AUTHOR
Anton Lysenok, bart@tapolsky.net.ua
https://sourceforge.net/projects/clonehdd/
version 2.0.3 15 September 2007 clonehdd(8)
