how can I setup software RAID1 on a running LVM system
Hi,
I m using Centos 5.5 with LVM system,and I m trying to setup sofrware RAİD on that system. Does anybody help me ?
I dont have raid card because of that I have to setup the system with software raid.
My problems are, how can I add new disk on running system or how can I get back datas if system fail.
beklan
2011/8/16, beklan <[email protected]>:
Quoted 21 lines
Hi,
I m using Centos 5.5 with LVM system,and I m trying to setup sofrware RAİD on that system. Does anybody help me ?
I dont have raid card because of that I have to setup the system with software raid.
My problems are, how can I add new disk on running system or how can I get back datas if system fail.
beklan
Signature · 16 lines
Gesendet von meinem Mobilgerät Best regards / Mit freundlichen Grüßen, think project! International GmbH & Co. KG Claus Koch Systems Engineer Mobile +49 176 10382588 Phone +49 30 921017-61 Fax +49 30 92 10 17-51 [email protected] Legal information (imprint): www.thinkproject.com/en/info Rechtliche Informationen zum Absender (Impressum): www.thinkproject.com/de/info
"man mdadm" or:
http://tinyurl.com/4pjnu43
Signature · 16 lines
Ray Morris [email protected] Strongbox - The next generation in site security: http://www.bettercgi.com/strongbox/ Throttlebox - Intelligent Bandwidth Control http://www.bettercgi.com/throttlebox/ Strongbox / Throttlebox affiliate program: http://www.bettercgi.com/affiliates/user/register.php On Wed, 17 Aug 2011 08:06:34 +0200
Quoted 23 lines · Claus Koch
2011/8/16, beklan <[email protected]>:
Quoted 21 lines
Hi,
I m using Centos 5.5 with LVM system,and I m trying to setup sofrware RAÄ°D on that system. Does anybody help me ?
I dont have raid card because of that I have to setup the system with software raid.
My problems are, how can I add new disk on running system or how can I get back datas if system fail.
beklan
Quoted 3 lines · Ray Morris
"man mdadm" or:
http://tinyurl.com/4pjnu43
Alturnatively he might want to create a mirror using LVM not a block device. Answer when you create the LV using "lvcreate" use the -m option to set the number of mirror copies. Alturnatively you can use lvconvert to change a normal LV into a mirrored one.
The question of how to get the system back if a disk fails in a tricky one.... If a disk fails the system should keep on working as there is a copy of the information so it will continue to work, Hardware might have problems with the drive if it is not a clean failure though, what is needed is to reduce out the damaged disk and add a new undamaged one, the one problem is the BOOT block if the disk is the boot device, then you might need use grub to setup a new boot block on the new device.
James