So, the system installs with the mpath option passed at boot time, but I believe the storage controllers are thrashing wildly as the system runs horribly slow (I don't have access to the SAN as it's managed by a 3rd party). On reboot the multipath is again broken, so I don't believe that boot from SAN is possible....
On Thu, Apr 9, 2009 at 12:42 PM, Vanco Backup <[email protected]> wrote: > Thanks JF - and to be clear, you did NOT install the actual RDAC > package, correct? > > Any chance you're doing SAN boot too?? (about to try that) > > Don > > On Thu, Apr 9, 2009 at 12:35 PM, Jan-Frode Myklebust <[email protected]> > wrote: >> Here's my config for RHEL5u3, against DS4800: >> >> [janfr...@lagring1 ~]$ grep -v ^# /etc/multipath.conf|grep -v ^$ >> blacklist { >> #devnode "*" >> } >> defaults { >> user_friendly_names yes >> } >> devices { >> device { >> vendor "IBM" >> product "1815" >> prio_callout "/sbin/mpath_prio_rdac /dev/%n" >> path_grouping_policy group_by_prio >> failback immediate >> path_checker rdac >> hardware_handler "1 rdac" >> user_friendly_names yes >> } >> } >> >> I think the new thing in RHEL5u3 was that if you preload the scsi_dh_rdac >> module, you woun't get lots of scsi errors during boot. To preload this >> module, you'll need to create a new initrd using: >> >> mkinitrd /boot/initrd-$(uname -r)-scsi_dh.img $(uname -r) >> --preload=scsi_dh_rdac >> >> and update your grub.conf to use this initrd. >> >> HTH. >> >> >> -jf >> >> _______________________________________________ >> rhelv5-list mailing list >> [email protected] >> https://www.redhat.com/mailman/listinfo/rhelv5-list >> > _______________________________________________ rhelv5-list mailing list [email protected] https://www.redhat.com/mailman/listinfo/rhelv5-list
