Hello, Check this post: http://www.linuxquestions.org/questions/linux-software-2/raid-5-array-not-assembling-all-3-devices-on-boot-using-mdadm-one-is-degraded-829541/#post4085382 On Sun, Oct 10, 2010 at 11:41 AM, Majed B. <majedb@xxxxxxxxx> wrote: > > Hello, > Check this post:Âhttp://www.linuxquestions.org/questions/linux-software-2/raid-5-array-not-assembling-all-3-devices-on-boot-using-mdadm-one-is-degraded-829541/#post4085382 > > On Sun, Oct 10, 2010 at 4:22 AM, Harry Mangalam <harry.mangalam@xxxxxxx> wrote: >> >> the short version: >> ÂCan mdadm use /dev/sgX as devices? >> Â(and if so, how?) >> >> the longer version is: >> >> I inherited a 6-bay IBM x3655 Âwith a ServeRAID-8k RAID controller >> (from docs, it seems to be an 8-port Adaptec 9580W SAS/SATA >> controller). I'd like to run Ubuntu 10.04. >> >> I can use the controller BIOS on boot to config and set up a RAID5 >> (which presents to the OS as '/dev/sda' - the 'very large device'. >> However there's no way to add notification of disk failure. ÂThere are >> some GUI Java-based packages which claim to be able to do this (a >> 32bit Java RaidManager (RaidMan), which seems to be a re-badged >> Adaptec StorageManager (StorMan - also available in a true 64bit >> version) which I've managed to get running but they both lock up in >> various ugly and opaque ways. >> >> Along with the Java GUI apps is an Adaptec commandline app called >> 'arcconf' that allows you to peek at the controller and does allow a >> primitive amount of control (but not email notification of disk >> failure). >> >> I'd prefer to use mdadm since it's simpler and mostly 'just works and >> does email notifications. However, the controller does not translate >> the /dev/sgX addresses to the /dev/sdX devices that mdadm seems to >> want. >> >> - lspci says: >> Â05:00.0 RAID bus controller: Adaptec AAC-RAID (Rocket) (rev 02) >> >> - The boot process does not load the aacraid driver, but it can be >> modprobed manually. ÂThis doesn't change much tho: >> >> # lsmod |grep aacraid >> aacraid        Â76291 Â0 >> >> >> - dmesg shows: >> [  Â3.394749] scsi 0:1:0:0: Attached scsi generic sg1 type 0 >> [  Â3.394877] scsi 0:1:1:0: Attached scsi generic sg2 type 0 >> [  Â3.394981] scsi 0:1:2:0: Attached scsi generic sg3 type 0 >> [  Â3.395085] scsi 0:1:3:0: Attached scsi generic sg4 type 0 >> [  Â3.395190] scsi 0:1:4:0: Attached scsi generic sg5 type 0 >> [  Â3.395296] scsi 0:1:5:0: Attached scsi generic sg6 type 0 >> [  Â3.395427] scsi 0:3:0:0: Attached scsi generic sg7 type 13 >> (The last is the controller) >> >> - # sg_scan shows >> /dev/sg0: scsi1 channel=0 id=0 lun=0 [em] >> /dev/sg1: scsi0 channel=1 id=0 lun=0 [em] >> /dev/sg2: scsi0 channel=1 id=1 lun=0 [em] >> /dev/sg3: scsi0 channel=1 id=2 lun=0 [em] >> /dev/sg4: scsi0 channel=1 id=3 lun=0 [em] >> /dev/sg5: scsi0 channel=1 id=4 lun=0 [em] >> /dev/sg6: scsi0 channel=1 id=5 lun=0 [em] >> /dev/sg7: scsi0 channel=3 id=0 lun=0 [em] >> /dev/sg8: scsi2 channel=0 id=0 lun=0 [em] >> /dev/sg9: scsi7 channel=0 id=0 lun=0 [em] >> >> # sg_map >> /dev/sg0 Â/dev/scd0 <- cdrom >> /dev/sg1   < no /dev/sdX mapping >> /dev/sg2 >> /dev/sg3 >> /dev/sg4 >> /dev/sg5 >> /dev/sg6 >> /dev/sg7      <- controller >> /dev/sg8 Â/dev/sda <- broadcom severworks SATA disk >> /dev/sg9 Â/dev/sdb <- USB thumbdrive >> >> -- >> Harry Mangalam - Research Computing, NACS, Rm 225 MSTB, UC Irvine >> [ZOT 2225] / 92697 Â949 824-0084(o), 949 285-4487(c) >> MSTB=Bldg 415 (G-5 on <http://today.uci.edu/pdf/UCI_09_map_campus.pdf> >> -- >> Non-sarcarstic use of 'seamless' in any context having to do with >> computers immediately disqualifies the speaker as an expert. >> -- >> 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 > > > > -- >   Â Majed B. --   Â Majed B. -- 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
