On 2011-10-12, Peter W. Morreale <morreale@xxxxxxx> wrote: > > Assuming I have two or more jbods attached to the machine, how can I > determine which disks are associated with which paths? (Yes, sorry, I > realize this is a general discovery question and not specific to > raid :-) Not positive this is what you want, but you can look at the udevinfo tool: # udevinfo -q all -n sdc1 P: /block/sdc/sdc1 N: sdc1 S: disk/by-id/scsi-1AMCC_A367495389E5F400123E-part1 S: disk/by-path/pci-0000:01:03.0-scsi-0:0:1:0-part1 E: ID_VENDOR=AMCC E: ID_MODEL=9550SX-16M_DISK E: ID_REVISION=3.02 E: ID_SERIAL=1AMCC_A367495389E5F400123E E: ID_TYPE=disk E: ID_BUS=scsi E: ID_PATH=pci-0000:01:03.0-scsi-0:0:1:0 I hope someone else can answer your other questions; I've just started using mdraid myself. I have played with the speed_limit parameters, but haven't noticed a huge difference (likely because they aren't good disks, not a fault with md). --keith -- kkeller-usenet@xxxxxxxxxxxxxxxxxxxxxxxxxx (try just my userid to email me) AOLSFAQ=http://www.therockgarden.ca/aolsfaq.txt see X- headers for PGP signature information -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html