[dm-devel] Problem when creating snashots
The MoonSeeker
themoonseeker at gmail.com
Wed Sep 27 09:51:43 UTC 2006
Yes I really need it. I have to create a virtual network editor for
my diploma project. So I have found many virtual solutions but the
bestest for our project is OpenVZ. Unfortunatly, OpenVZ don't offer
the copy on write with his solution, after many tests, I have found a
solution based on LVM.
The main idea is to have a Virtual Private Server Core and lot of
Virtual Private Server who are a snapshot of the Virtual Server Core.
Now the problem is the limitation of VLM, I need more than 32 servers
(32 snapshots). Will this limitation incresed in futur futur released
of LVM? Or can we broke this limitation?
Have you a solution, it's relly urgent for me...
Thanks you
Le 26 sept. 06 à 23:14, Jan Blunck a écrit :
> On Tue, Sep 26, The MoonSeeker wrote:
>
>> I'd like to create many snaphot of an image but I've got when I
>> attemp to create the 32th snapshot :
>>
>> root at B03:/diplome# lvcreate -s -L150M -n 232 /dev/openvz/vps-core
>> Rounding up size to full physical extent 152.00 MB
>> device-mapper: reload ioctl failed: Ne peut allouer de la mémoire
>> Failed to suspend origin vps-core
>>
>> I don't understand the error..
>
> I'm not a native french speaker (hint!) but I assume you run out of
> memory.
>
> Yes there are limitations to the number of snapshots. For every single
> snapshot we have to allocate memory for copying the chunks to the
> exception
> store.
>
> Do you really need that many snapshots at the same time?
>
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