On Mon, Nov 28, 2011 at 9:13 PM, Gianluca Cecchi wrote: > On Mon, Nov 28, 2011 at 7:05 PM, Moger, Babu wrote: [snip] >> RHEL 5.7 has the patch already as I know. You can check to be sure. Can you also add "scsi_mod.scsi_logging_level=5056" in kernel line to get more information on what else is going on. > > Ok, I have verified that the patch should be applied. [snip] > So I'm going to add the scsi logging parameter you suggested and see. > Unfortunately it seems that rh el 5.x kernel doesn't support that scsi_mod kernel module option directly at kernel line # cat /proc/cmdline ro root=/dev/VolGroup00/LV_root rhgb quiet scsi_mod.scsi_logging_level=5056 In messages: Nov 29 07:00:03 testserver kernel: Unknown boot option `scsi_mod.scsi_logging_level=5056': ignoring So I picked up the new initrd with the scsi_dh part and put directly that option at insmod statement line for scsi_mod module in initrd init file, creating another special grub.conf stanza for this initrd See messages and output of dmesg with this parameter at the links below https://docs.google.com/open?id=0BwoPbcrMv8mvNzU1ZTNlY2UtY2E5Ni00NDdlLWIyY2UtZmQ0Y2I4OTJmNTZi and https://docs.google.com/open?id=0BwoPbcrMv8mvZmUxNTNmNjgtOTZmMi00YTBiLTkyZTktZWU0NTdjZWI4OWZm At the end of boot: mpath1 (3600a0b80005012440000093e4a55cf33) dm-6 IBM,1814 FAStT [size=3.4T][features=1 queue_if_no_path][hwhandler=1 rdac][rw] \_ round-robin 0 [prio=0][active] \_ 3:0:1:1 sdc 8:32 [active][undef] \_ 4:0:1:1 sde 8:64 [active][undef] \_ round-robin 0 [prio=0][enabled] \_ 3:0:0:1 sdb 8:16 [active][undef] \_ 4:0:0:1 sdd 8:48 [active][undef] Hope it helps you understanding better what doesn't go as expected.. Thanks for your time Gianluca -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
