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Dube, Lutz" authored
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>
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