On 03/29/2012 01:59 PM, Edward Ned Harvey wrote:
I see very little, if any, argument in favor of using the file. I suppose,
if you wanted to run your virtual head on some other machine, then you could
export your file via NFS instead of iscsi, and that gives you one extra
degree of freedom if you're using a file. Also, if you got something like a
snapshotting storage server, you could migrate your file over to that
server, and benefit by snapshots.
The only reason why I would consider a "file" instead of an LVM volume
is that you have a "file" that can be copied and backed up easily. It is
relocatable in that it cam be moved from one file system to another and
it can bring its size with it. The LVM device is more or less dependent
on the LVM create command and the admin ensuring that a properly sized
device is created if you want to move it to a different machine. I guess
you could us dd to copy the device (or a snapshot) to a file to move it
around, but you see the issue.
There are definitely a list of pros and cons. It's interesting to see
what other people think. So far, I think the "pros" go to LVM.
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