From: Thomas Goirand <thomas@goirand.fr>
To: Xen-devel@lists.xensource.com
Subject: Re: Xen Memory De-duplication
Date: Tue, 12 Oct 2010 18:20:08 +0800 [thread overview]
Message-ID: <4CB43658.6030302@goirand.fr> (raw)
In-Reply-To: <AANLkTimPtH2DFCM-71gSRe_-t1Xa+cjcUGpE=8hogD4S@mail.gmail.com>
Aditya Gadre wrote:
> This kind of implementation will require the disk blocks from
> different DomUs to be mapped to same physical disk block.
> For example,
> 1) Shared read only filesystem
> 2) Union based filesystem
> 3) Virtual machine images deployed on a host filesystem which has
> deduplication enabled
>
> What kind of arrangement of filesystem is used in production
> environments for DomUs which host large number of VMs as in cloud
> enviorment?
>
I don't know for others, but for us (eg: at GPLHost), none of
what you described above is doable. Each VM has its own
LVM partition, and we wont have shared filesystem among
many VMs. Never ever. We don't use virtual machine *images*
either.
What would be nicer, would be a more general approach, and
maybe have the possibility to use a filesystem that is already
mounted on the dom0. Why? Because most of the time, what
is wasted, is the free space in each LVM, in what I described
above.
Thomas
next prev parent reply other threads:[~2010-10-12 10:20 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-09 17:56 Xen Memory De-duplication Aditya Gadre
2010-10-09 19:09 ` Pasi Kärkkäinen
2010-10-09 23:40 ` Dan Magenheimer
2010-10-10 5:24 ` Aditya Gadre
2010-10-10 12:34 ` Pasi Kärkkäinen
2010-10-11 7:58 ` Shriram Rajagopalan
2010-10-12 10:20 ` Thomas Goirand [this message]
2010-10-12 10:33 ` Tim Deegan
2010-10-11 12:59 ` Tim Deegan
-- strict thread matches above, loose matches on Subject: below --
2016-04-17 11:25 Xen Memory de-duplication Maryam Masoudian
2016-04-17 12:15 ` Wei Liu
2016-04-17 13:58 ` Maryam Masoudian
2016-04-17 14:20 ` Wei Liu
[not found] ` <CAOJrJTc5dynTwiMrtE4Logpz1_ct3oM9vz3HWh1s1sDMY+hSxw@mail.gmail.com>
2016-04-20 13:24 ` Wei Liu
2016-04-20 16:25 ` Tamas K Lengyel
2016-04-20 18:34 ` Dario Faggioli
2016-04-20 19:01 ` Tamas K Lengyel
2016-04-21 12:47 ` Dario Faggioli
[not found] ` <CAOJrJTeK3ntGGwyAjY25xL0g8AXtDcoUOcipF4jmZDCfbdA9Kw@mail.gmail.com>
2016-04-21 15:24 ` Tamas K Lengyel
2010-10-08 19:01 Xen Memory De-duplication Aditya Gadre
2010-10-08 19:02 ` Aditya Gadre
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