So, I face a problem: How to REBUILD / CLONE sda to sdb with Linux
command mdadm?? :((
Timmy
The "simplest" route is to just use dd(1):
dd if=/dev/sda of=/dev/sdb bs=1M conv=notrunc,noerror,sync 2>&1 | tee
/tmp/dd-errors.log
This will create an exact, bootable clone, including partition tables
and UUID. It may take a long time, and there is no progress indicator
with dd, but it works. If there are errors, you can check the file tee
writes. See the dd manpage for more details.
Other alternatives include partimage, available here:
http://www.partimage.org/Main_Page -- and also, the mdadm command
itself -- the short version: set up RAID 1, partitions to Linux raid
autodetect, put the first drive (your everyday drive) as the first in
the set and the second as the mirror. The md driver should
automatically rebuild the mirror for you. Just make sure you partition
the disks the same way. There's plenty of information on the web about
working with md/mdadm.
--
Samuel Halicke [EMAIL PROTECTED]
FNAL/CD/SF/FEF FCC/252/U
(T): 630.840.4308 (P): 630.266.0042
Hi Samuel,
I booted my server with Rescue CD and input your recommended command!!!
Worked exactly the way as your stated!!! Fermi Lab Scientist 5 Stars!!!
* * * * *
It took about 45 minutes to copy the whole 160GB harddisk! Many Thanks!!!
After the computer booted as normal RAID 1 (not degraded mirror), I
checked the RAID by mdadm command. It still showed that /dev/md0;
/dev/md1 as inactive. Is this normal for software RAID 1??
Timmy
