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xen-api
RE: [Xen-API] XCP disk full recovery init script. Ideas/suggestions.
Hi David,
This sounds really useful.
Re: generating an alert before xapi is up: I think sticking a
message directly in the filesystem is probably ok. The only thing you’ll not
get is an email message sent. Jon (cc:d) knows more about alerts than me – do you
think that’ll work, Jon?
Cheers,
Dave
From:
xen-api-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-api-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of David Markey
Sent: 03 September 2010 15:55
To: xen-api@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-API] XCP disk full recovery init script.
Ideas/suggestions.
Hi all,
As you all probably know. if the root filesystem is full on
boot, XCP rarely boots properly(and most times you don't even reach a login
prompt).
In most cases, admins dont know what to do in the situation.
To combat this, I've started to develop an early init
script, which intelligently tries to free enough space to boot properly(I
estimate around 50MB is safe), before any of the xen related tools and XAPI
starts. I believe it will make the product more resilient.
I'm thinking up strategies on how to free up space. I've
come up with the following
2) gzip /var/log/{xensource.log.*,SMlog.log.*,messages.*},
using /dev/shm as temporary space.
3) Check the viability of moving files from the main
partition, to the backup partition, move log files from one to the other.
4) Just deleting log files if all else fails or maybe drop
to a login prompt?
Also, is there a way I can tell XAPI to alert the user that
this has happened, taking into account that this will be before XAPI is
started? Perhaps generating an alert and placing it in
/var/xapi/blobs/messages?
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