CentOS - Nov 2011 - CentOS 6 x64 - Changing /var folder to raid 1 disk after install

Hello,

I have fresh install CentOS 6 x64 running on my server. I have a raid
1 drive 3 tb ready to be mounted. I want to mount this as var folder,
could achive this but after reboot, server didn't start, maybe i had
problem with command cp -rf.

Is this possible to do in a proper manner, with what commands?
I used rsync and diff game me like 10+ output.

Best regards

Am 21.11.2011 12:50, schrieb Adil BOYUN:
> Hello,
> 
> I have fresh install CentOS 6 x64 running on my server. I have a raid
> 1 drive 3 tb ready to be mounted. I want to mount this as var folder,
> could achive this but after reboot, server didn't start, maybe i had
> problem with command cp -rf.
> 
> Is this possible to do in a proper manner, with what commands?
> I used rsync and diff game me like 10+ output.
well as long /var is containing "/var/lib" and "/var/cache"
than more
applications / services are running more possible changes you will get
while the sync is running

i would boot the machine with a live-cd and finalize these changes there
on the other hand i would NOT move the whole /var to an own partition

normally "/var/cache" and "/var/log" two own partitions or
if it is
a virtual machine in two different virtual disks should be enough
to prevent fill the root-fs and the different disks makes it much
easier resize/replace them if needed

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Hello,

Thanks for your answer. Thing is, I will install plesk on this server
and what i imagined was to make document root for vhosts to be on
different drive. On one of servers, i made vhost.conf file and changed
document root, and later had problems with cgi-bin folder etc.

Thought like, since changing document root with plesk is kinda pain
for my experience, what can i configure to have my websites, and later
added domains run with no problem?

Linux is installed on sda 120 gb ssd disk, raid one drive ready to be
mounted at /dev/md0 3 tb free disk.

Best regards

2011/11/21 Reindl Harald <h.reindl at
thelounge.net>:
>
>
> Am 21.11.2011 12:50, schrieb Adil BOYUN:
>> Hello,
>>
>> I have fresh install CentOS 6 x64 running on my server. I have a raid
>> 1 drive 3 tb ready to be mounted. I want to mount this as var folder,
>> could achive this but after reboot, server didn't start, maybe i
had
>> problem with command cp -rf.
>>
>> Is this possible to do in a proper manner, with what commands?
>> I used rsync and diff game me like 10+ output.
>
> well as long /var is containing "/var/lib" and
"/var/cache" than more
> applications / services are running more possible changes you will get
> while the sync is running
>
> i would boot the machine with a live-cd and finalize these changes there
> on the other hand i would NOT move the whole /var to an own partition
>
> normally "/var/cache" and "/var/log" two own partitions
or if it is
> a virtual machine in two different virtual disks should be enough
> to prevent fill the root-fs and the different disks makes it much
> easier resize/replace them if needed
>
>
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> http://lists.centos.org/mailman/listinfo/centos

On 21/11/11 22:50, Adil BOYUN wrote:
> I have fresh install CentOS 6 x64 running on my server. I have a raid
> 1 drive 3 tb ready to be mounted. I want to mount this as var folder,
> could achive this but after reboot, server didn't start, maybe i had
> problem with command cp -rf.
>
> Is this possible to do in a proper manner, with what commands?
> I used rsync and diff game me like 10+ output.
If this is a fresh install, I gather selinux is enabled, so the above 
approach is likely to have issues: many files/dirs under /var have 
special selinux contexts.

I'd normaly use something like

rsync -aX /var/ /mnt/new_raid_array/

(the -X option preserves selinux contexts and note the trailing slashes)

Hope this helps.

K

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