[Xen-users] Get parameters from dom0 to domu on domu start

["eugene.istomin" <eugene.istomin@xxxxxxxxx>]

Hello, 

I have a question about dom0<->domu xenstore interaction.

Assume, we have some pv domu with some logic inside 
(like
"if grep -Fxq "echo noop > \/sys\/block\/$DISK\/queue\/scheduler" 
$INIT_BOOTLOCAL 
then 
  echo "$DISK exist in $INIT_BOOTLOCAL" 
else 
  echo "echo noop > \/sys\/block\/$DISK\/queue\/scheduler" >> 
$INIT_BOOTLOCAL 
fi "
)

'Cos of many gw/mtu/zabbix/bacula parameters we need to know all of this 
parameters on domu side before init 1. Assume we have some xenstore custom 
structure in xenstore, that describes thoose parameters.

Is it possible to run some custom script from dom0 on domu start which:
1) get some extra info form config file (network name, domain name, etc)
2) copy some parameters from one xenstore tree (custom) to another 
(/local/$domid)?

AFAK 1) is resolved by extra=".." in xm/xl config
What about 2)?

-- 
Best regards,
Eugene Istomin

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