Have you looked at the volume_clear and volume_clear_size options in cinder.conf?
https://github.com/openstack/cinder/blob/2013.2.rc1/etc/cinder/cinder.conf.sample#L1073 The default is to zero out the volume. You could try 'none' to see if that helps with performance. Thanks, MATT RIEDEMANN Advisory Software Engineer Cloud Solutions and OpenStack Development Phone: 1-507-253-7622 | Mobile: 1-507-990-1889 E-mail: [email protected] 3605 Hwy 52 N Rochester, MN 55901-1407 United States From: cosmos cosmos <[email protected]> To: [email protected], Date: 10/11/2013 04:26 AM Subject: [openstack-dev] dd performance for wipe in cinder Hello. My name is Rucia for Samsung SDS. Now I am in trouble in cinder volume deleting. I am developing for supporting big data storage in lvm But it takes too much time for deleting of cinder lvm volume because of dd. Cinder volume is 200GB for supporting hadoop master data. When i delete cinder volume in using 'dd if=/dev/zero of $cinder-volume count=1000000 bs=1M' it takes about 30 minutes. Is there the better and quickly way for deleting? Cheers. Rucia. _______________________________________________ OpenStack-dev mailing list [email protected] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
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