On 19 April 2011 15:04, David Brown <david@xxxxxxxxxxxxxxx> wrote: > On 19/04/2011 15:25, Mathias BurÃn wrote: >> >> On 19 April 2011 14:21, David Brown<david@xxxxxxxxxxxxxxx> Âwrote: >>> >>> I have recently got an IBM x3650 M3 server, which has a "Serveraid M5014" >>> raid controller. ÂBooting from a Linux CD (system rescue CD) and running >>> lspci identifies this raid controller as: >>> >>> LSI Logic/Symbus Logic Megaraid SAS 2108 [Liberator] (rev 03) >>> >>> The controller works fine for hardware raid - I can open its bios setup >>> utility, and set up a RAID5 (or whatever) with the disks I have. ÂThe OS >>> then just sees a single virtual disk. >>> >>> But I would like direct access to the sata drives - I want to set up >>> mdadm >>> raid, under my own control. ÂAs far as I can see, there is no way to put >>> this controller into "JBOD" or "direct access" mode of any sort. >>> >>> Does anyone here have experience with this card, or can give me any >>> hints? >>> >>> The only idea I have at the moment is to put each disk within its own >>> single-disk RAID 0 set, but then I don't get sata hot-swap functionality, >>> SMART, hddtemp, etc. >>> >>> Thanks for any clues or hints, >>> >>> David >>> >> >> Regarding SMART, could you try (after loading the appropriate >> megaraid/megasas module) hdparm -a -d megaraid,$I /dev/sda , where $I >> is a number between 0 and 31 IIRC (depending on the HDD in the array). >> > > Are you sure about the syntax for that command? ÂTrying that with "0" for $I > just gives me "megaraid,0: No such file or directory". ÂAs far as I can see, > the megaraid module is loaded (lsmod shows "megaraid_sas" in the modules > list). > > Thanks anyway, > > David > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at Âhttp://vger.kernel.org/majordomo-info.html > >From the smartctl man page: Under Linux , to look at SCSI/SAS disks behind LSI MegaRAID controllers, use syntax such as: smartctl -a -d megaraid,2 /dev/sda smartctl -a -d megaraid,0 /dev/sdb where in the argument megaraid,N, the integer N is the physical disk number within the MegaRAID controller. This interface will also work for Dell PERC controllers. The followâ ing /dev/XXX entry must exist: For PERC2/3/4 controllers: /dev/megadev0 For PERC5/6 controllers: /dev/megaraid_sas_ioctl_node Maybe you can experiment some with that. Regards, M -- 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
