How do I convert a single path boot from SAN RHEL system to multipath in RHEL 5?
Issue
- There is an installed system that was recently upgraded with multiple HBAs. We now have multipath storage available and would like to reconfigure the system to take advantage of the additional paths. How can this be done?
-
The system was configured to boot from SAN. During OS installation root lvm/filesystem were created using sub paths -
/dev/sdxx
. Is it possible to migrate from single path/dev/sdxx
to device-mapper-multipath devices viz./dev/mapper/mpathX
after OS installation??$ lvs_-a_-o_devices LV VG Attr LSize Devices LogVol00 rootvg -wi-ao 6.00G /dev/sdbt2(0) <--- root lvm volume created using underlying sub path LogVol01 rootvg -wi-ao 10.00G /dev/sdbt2(352) LogVol02 rootvg -wi-ao 5.00G /dev/sdbt2(674)
Environment
- Red Hat Enterprise Linux 5
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