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xen-users
Re: [Xen-users] Sharing file/folder
Le 14/02/2011 20:05, Simon Hobson a écrit :
I need to share some files between VMs. This files will be used to
transfer some information (read/write). But I need do it without any
network resource (NFS or others). I've tried to do it sharing a
partition just for test proposes, but i see that when i create a file
on one VM another can't see it and there isnt any concurrence in this
approach.
Anyone can help me??
Do it via networking. Think of each virtual machine guest as though it
was running on a separate bare metal computer and that's about what
you get with Xen in terms of inter-system communications.
It might be possible to do it by sharing a virtual disk, but you will
NEED to run a cluster file system on it with appropriate software on
each machine that accesses it. Without a cluster filesystem, then you
are absolutely guaranteed to get terminal filesystem corruption.
This would in effect be very similar to running a cluster FS on a
network volume.
For networking there are many options depending on your needs. Clearly
you could set up a share via NFS (or any other file sharing service
you like), via tools like RCP or SCP, via something like rsync (which
works very well as a service), or several other options.
Maybe you can make it by avoiding cache with directio or raw device,
But you will have to implement a locking system, unless you're sure the
different VM's don't modify data at the same time
I never tried however, and , is there really a point ?
I 'd like to listen to your purpose here, i think it could be interresting.
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