Yep. Look at
http://www.tldp.org/HOWTO/LVM-HOWTO/extendlv.html
The caveat is that you need to have patched your kernel with the
ext2online patch, which I believe is fairly common nowadays. Earlier
wasn't the case, which was one reason why on some of my old machines
(I'm talking 4+ years) they're using reiserfs.
-Mike
Austin Godber wrote:
> Wait, you have been able to resize mounted ext3 partitions? I didn't
> think that was possible?
>
> Austin
>
> On Apr 15, 2008, at 10:53 AM, Mike Bydalek wrote:
>
>> I'll say that I've been resizing production machines for a few years
>> now
>> without any issues. This includes ext3 and reiserfs. One of the
>> partitions I am frequently resizing contains our Scalix mail store.
>> So
>> far, I haven't had any issues with locking, db's, etc.
>>
>> -Mike
>>
>> der.hans wrote:
>>
>>> moin moin,
>>>
>>> is it generally safe to resize, move, etc. an LVM partition without
>>> unmounting the partitions on top of it?
>>>
>>> How about resizing ext3 on the fly as well?
>>>
>>> reiserfs? Other Free FSen?
>>>
>>> It worked fine for me yesterday in a VM, but I wasn't really doing
>>> anything in the VM, except playing with the LVM setup.
>>>
>>> That situation doesn't really tell he what would happen on a real
>>> FS where
>>> people and processes have lock files and are reading and writing
>>> files or
>>> what a database thinks about having it's filesystem mucked with.
>>>
>>> ciao,
>>>
>>> der.hans
>>>
>>>
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