Red Hat DEVICE-MAPPER MULTIPATH 5.2 Manuel d'utilisateur

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 1 How to Configure Linux Device Mapper Mu

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 10 Multipath configurations require that you map

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 11 no_path_retry (only for RHEL4) n is the number

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 12 defaults { udev_dir /dev polling_interval

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 13 devices { device { vendor "DotHil

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 14 6.3.5 Unified Lun (ULP) settings (devices) Th

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 15 devices { device { vendor

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 16 devices { device { vendor

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 17 R/Evolution 2330 (ULP)- The following are the

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 18 You must configure HBA parameters for the Devi

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 19 multipath -ll [device] Display the current mul

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 2 Revision History Author Date Changes Steve Ce

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 20 # multipath -ll yourspace (3600c0ff00000000002

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 21 storage resource is deleted from the host when

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 22 10 Appendix A - multipath.conf.annotated file

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 23 # # # # # name : path_grouping_

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 24 # # name : rr_min_io # # scope

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 25 # # If set to "no" u

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 26 # # desc : symbolic name for

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 27 # # assign path weight

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 28 # # # # name :

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 29 # # # # # name

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 3 Contents 1 Scope...

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 30 # # or "fail"

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 4 1 Scope Device Mapper Multipath (DM-MP) allow

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 5 Example #2: devices { device { vendor

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 6 • Alternate Paths: Redundant physical connect

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 7 block devices: /dev/sda, /dev/sdb, /dev/sdc, a

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 8 callout program. For the SANnet storage arrays

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4 DotHill – Copyright 2009 9 3. After completing the above steps reboot the