I setup a similar system on a HDS-9570 but with only one card in each machine - 'assuming' that the failover in the driver would cope if a controller on the HDS failed (as opposed to a QLogic failure) This worked fine if I disconncected a path in the fabric but when we took a controller of line the failover failed. Since then I have used md multipath which has tested fine On Fri, Jul 23, 2004 at 10:52:45AM +0200, Thomas Meller wrote: > Maybe everything is all right with what I am doing - maybe not. > > I have heard roumors that my setup may cause troubles. > Does anybody know something about it? > > I try to set up a cluster on a SAN with shared disks, mirrored over 2 storage controllers. > > Using QLogic HBAs, I have set > ql2xfailover=1 > to use the multipathing feature. > > We have 2 separate fabrics to connect to the storage and 2 HBAs in each machine. > > Disk layout: > > A B (controllers) > sda sdf > sdb sdg > sdc mirror sdh -+ > sdd mirror sdi | > sde mirror sdj -+ > | > +-- volume group > > Also, we do not have much write thruput to the disks. > I use reiserfs because I could resize it w/o remounting. > > Austin Gonyou has written something about write cache mirroring - what is that? > Necessary? > Howto? > I use LVM1 > > Am I in danger? > > Thanks > > Thomas > > -- > Thomas Meller > mailto: thomas.meller@t-systems.ch > mailto: thomas.meller@gmx.net > ---- > ...Our continuing mission: To seek out knowledge of C, to explore strange > UNIX commands, and to boldly code where no man page has ever been seen > _______________________________________________ > linux-lvm mailing list > linux-lvm@redhat.com > https://www.redhat.com/mailman/listinfo/linux-lvm > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/ -- Franc Carter Ph:61-2-9236-9127 Fax: 61-2-9321-5988 Systems Manager, SIRCA Ltd http://www.sirca.org.au/ DISCLAIMER: The contents of this email, inclusive of attachments, may be legally privileged and confidential. Any unauthorised use of the contents is expressly prohibited. If you have received this message in error or are not the intended recipient, you should destroy the email message along with any attachment(s). Unintended recipients of this email are prohibited from retaining, disclosing, distributing or using any information contained herein. This email is also subject to copyright. No part of it should be reproduced, adapted or transmitted without the written consent of the copyright owner. _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
