mirror of
https://github.com/xen-project/xen.git
synced 2026-10-28 10:11:27 +01:00
"Dube, Lutz"
c290fa1c4b
On server startup xend start or a later xend restart needs approx. 30 min to
start/restart. Without attached FC devices xend start/restart needs only some
seconds.
server type: Fujitsu Primergy RX600-S5
The time gets lost in xen/xend/XendNode.py line 329 while calling
vscsi_util.get_all_scsi_device().
329 for pscsi_record in vscsi_util.get_all_scsi_devices():
330 scsi_id = pscsi_record['scsi_id']
331 if scsi_id:
332 saved_HBA_uuid = None
I think, in most cases we don't need all the PSCSI devices registered in
xend, but only a few of it.
So a good solution for this perforamce issue is to scan only the SCSI device
paths we need, controlled by a new option in xend-config.sxp.
I have made a patch to allow specification of scsi devices we need in xend
in the config file xend-config.sxp.
The new options pscsi-device-mask expects a list of device ids oder partial
device ids like the option of lsscsi, e.g.
(pscsi-device-mask ('<partial-dev-id1' 'partial-dev-id2' ...))
Without this option set in xend-config.sxp or if lsscsi is not support, all
device paths are process like today.
Signed-off-by: Lutz Dube Lutz.Dube@ts.fujitsu.com
Comment from Masaki Kanno <kanno.masaki@jp.fujitsu.com>: "Well done"
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
Xen Control Tools - Examples
===================================
This directory contains example scripts and configurations for Xen.
For many operations you will either be able to use these scripts directly, or
incorporate code from them into your own scripts.
If you write a useful script and would like to share it, please do
send it (preferably with a little summary to go in this file) to
<xen-devel@lists.sourceforge.net> so we can add it to this directory.
block - called by xen-backend.agent to bind/unbind dev
block-common.sh - sourced by block, block-*
block-enbd - binds/unbinds network block devices
block-nbd - binds/unbinds network block devices
external-device-migrate - called by xend for migrating external devices
locking.sh - locking functions to prevent concurrent access to
critical sections inside script files
logging.sh - logging function to log output using syslog
network-bridge - xen network start/stop script when using bridging
network-nat - xen network start/stop script when using NAT
network-route - xen network start/stop script when using routing
vif-bridge - virtual network start/stop script in bridged mode
vif-common.sh - sourced by vif-bridge
vif-nat - xen virtual network start/stop script in NAT mode
vif-route - xen virtual network start/stop script in routed mode
vtpm - called by xen-backend.agent to bind/unbind vTPM devices
vtpm-common.sh - common code for vTPM handling
vtpm-delete - remove an entry from the vTPM table given the
domain's name
vtpm-hotplug-common.sh - sourced by vtpm
vtpm-migration.sh - sourced by external-device-migrate
xen-backend.agent - calls block, vif-*, vtpm scripts to add, remove, hotplug
devices
xen-backend.rules - hotplug script rules
xend-config.sxp - default xend configuration file
xen-hotplug-common.sh - sourced by vif-common.sh
xen-network-common.sh - sourced by vif-common.sh
xen-script-common.sh - sourced by network-bridge, xen-hotplug-common.sh
xmexample1 - example configuration script for 'xm create'
xmexample2 - a more complex configuration script for 'xm create'
xmexample3 - an advanced configuration script for 'xm create'
that utilizes the vmid
xmexample.nbd - configuration script that uses NBD filesystems
xmexample.hvm - a configuration script for creating a hvm domain with
'xm create'
xmexample.hvm-stubdom - a configuration script for creating a hvm domain with
'xm create' that utilizes a stubdomain for device model
xmexample.pv-grub - a configuration script for creating a domain with 'xm create'
which boots PV-GRUB.
xmexample.vti - a configuration script for creating a domain on vti