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Re: [Xen-devel] Xrenstore and many save/restore cycles...

  • To: "Petersson, Mats" <Mats.Petersson@xxxxxxx>
  • From: Tom Wilkie <tom.wilkie@xxxxxxxxx>
  • Date: Thu, 10 May 2007 14:57:45 +0100
  • Cc: Keir Fraser <keir@xxxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, Tom Wilkie <tom.wilkie@xxxxxxxxx>
  • Delivery-date: Thu, 10 May 2007 06:56:09 -0700
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If you look in python/xen/xend/server at the various device controllers, like blkif.py etc they should do the tidying up.



On 10 May 2007, at 14:47, Petersson, Mats wrote:

-----Original Message-----
From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of
Petersson, Mats
Sent: 09 May 2007 17:50
To: Keir Fraser; xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: RE: [Xen-devel] Xrenstore and many save/restore cycles...

-----Original Message-----
From: Keir Fraser [mailto:keir@xxxxxxxxxxxxx]
Sent: 09 May 2007 17:46
To: Petersson, Mats; xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] Xrenstore and many save/restore cycles...

On 9/5/07 17:18, "Petersson, Mats" <Mats.Petersson@xxxxxxx> wrote:

These days xenstore only needs to hold information about live
domains. The
/vm/<uuid> directory should be removed by xend once a domain
is completely
dead. It'd be great to get a patch to fix this!

Ok, I'm happy to make an attempt to fix this, but I haven't
really got a
clue even where to start looking to find the right place to
remove it...
Any hint?

Hmmm... Somewhere in tools/python/xen/xend is the best I can do!

I started looking there while waiting for a reply - didn't
find anything
real useful, but I will look again tomorrow unless someone
comes up with
a solution before then.

Well, I've looked at it further, and it's not the
/local/domain/foo that is left behind (or at least, that's
not the first bit that comes up).

Sorry about that, hit Send when I really didn't want to do that...

I've looked for /vm/foo, which is very short, so that's not what is
filling up the xenstore.

It seems like I've got a lot of /local/domain/0/backend/console/* stuff
tho. Not sure if I have any other .../0/backend/* stuff as well, but
certainly there are literally thousands of consoles there..

Trying to locate where these are created and restored, but no success


The /local/domain/foo directory seems to disappear nicely.
Perhaps the
/vm/foo directory could go at the same time without
things breaking?

Will have a look at the /local/... Path and see if I can find where
that's removed. So far I didn't find any (particularly
useful) "xenstore
remove" operations....


 -- Keir

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