Re: [Xen-devel] [PATCH 1/2] tools/xenstore: start with empty data base

[George Dunlap <dunlapg@xxxxxxxxx>]

On Tue, Jan 10, 2017 at 4:14 PM Juergen Gross <jgross@xxxxxxxx> wrote:
>
> Today xenstored tries to open a tdb data base file on disk when it is
> started. As this is problematic in most cases the scripts used to start
> xenstored ensure xenstored won't find such a file in order to start
> with an empty xenstore.

Sorry to respond to such an old thread, just trying to record this in
a useful place: in the distros design session at the recent XenSummit,
it turned out that:
1. Most distros had to mount a tmpfs for the xenstore database to
prevent xenstore from destroying disk performance
2. xenstored already has an `-I` option which creates a memory-only database

At which point it was asked: Why is this option not the default?

This patch seems to imply that the main reason at the moment for an
external db is debugging; in which case, it does seem like the default
should be in-memory, with an external db as a debugging option.

 -George

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