[linux-lvm] Linux LVM online shrinking :(

[Mauricio Tavares]

On Mon, Aug 5, 2013 at 5:01 AM, Zdenek Kabelac <zkabelac at redhat.com> wrote:
> Dne 5.8.2013 10:53, Zdenek Kabelac napsal(a):
>
>> Dne 1.8.2013 11:00, DILIP KURUMANGHAT napsal(a):
>>>
>>> Hi Team,
>>>
>>> You might already have come across this stuff many a times.
>>>
>>> I am sending this query as to why LVM is not supporting online shrink.
>>> How is that AIX can do the shrink but not in our best Linux.
>>>
>>> Is there a big difference i the underlying architecture which prevents us
>>> from
>>> an online shrink?
>>>
>>
>> You are asking this question on a wrong mailing list.
>>
>> LVM2 of course does fully support online device shrink.
>>
>> The other side of story is - there is no filesystem I'd know about which
>> would be supporting online shrinking.  The fact is - it's pretty hard
>
>
> Except for btrfs - which on the other hand doesn't need  lvm2.
> So if you need something shrinkable online - try to go with btrfs.
>
      btrfs is not the only one; I just cannot remember of the ones
you can use with lvm2. I mean, ext(1,2,3,4) do not like to be sized
down live and just like btrfs, zfs and jfs2 (at least on AIX) do not
need lvm2. But, you can use jfs in linux.

Ok, I need coffee.


> Zdenek
>
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