UNIX for Dummies Questions & Answers

hey guys i have a question about disadvantage of LVM

i search many time but i cant find answer of my question i think it's undocumented.

and my question :

when or where is not good to use LVM or u dont recommended to use LVM ?

is it every where benefit ???

Well you can use LVM when ever you want. I'm managing 150 RedHat servers that use all of them the LVM. Its rely necessary cause if you have oracle databases that grow in size you must be able to add more space to your servers.. with a SAN or localy.. depends on what you need. I rely recommande LVM, and who told you that LVM is not good ?

Imagine you have a hd with 400G for example... Your application is using 300G and you know that you'll need more space in the future ... What are you going to do if you can't juste stop your application and transfer it on another hdd with more space ? Well ith LVM you don't need to do that... you juste add more disks to your server, put them in the same volume group with the other one, and you juste give more space to the file system that you need. This gives you a lot of advantage believe me.

Try 'it before, and after you can make an opinion about it..

but i think every advantage tool have disadvantage too

and now i think more advantage of LVM but i want to know where LVM not recommended or not benefit

Yes your right every tool has advantages and disadvantages, Lvm does not by default provide any redundancy, you need to put it on top of a RAID 1 or X.

check this out : The advantages/disadvantages of Linux LVM. Dispatches from Andyland
and this : server - Does LVM impact performance? - Unix and Linux - Stack Exchange

Hope this helps