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#1 2012-09-19 12:48:05

From: Australia
Registered: 2008-05-12
Posts: 79

[Solved] Areca RAID card - /dev/sg* no longer appearing

Hi All,

We recently had 3 drives drop out of our Areca ARC-1230 Hardware RAID6 array. I'd like to probe the CCTL and various other settings with smartctl
However I do not have a /dev/sg* entry any more! This is the crux of my problem. (I remember some time ago (a while admittedly) it was there.)
Smartctl requires I use the syntax 

smartctl -a -d areca,1,1 /dev/sg0

...but I am unable, due to these entries being entirely missing. Can anyone advise how I can probe my card using smartctl.

Various useful output

Card model:

lspci |grep -i areca
08:0e.0 RAID bus controller: Areca Technology Corp. ARC-1230 12-Port PCI-Express to SATA RAID Controller

uname -a
Linux boxen 3.0.43-1-lts #1 SMP Sat Sep 15 15:10:06 CEST 2012 x86_64 GNU/Linux

smartctl -V
smartctl 5.43 2012-06-30 r3573 [x86_64-linux-3.0.43-1-lts] (local build)

output of lsscsi

[0:0:0:0]    disk    Huawei   ARC-1230-VOL#00  R001  /dev/sda
[0:0:16:0]   process Areca    RAID controller  R001  -

[1:0:0:0]    cd/dvd  HL-DT-ST DVDRAM_GSA-H60N  CA01  /dev/sr0
[6:0:0:0]    disk    ATA      ST3250823AS      3.01  /dev/sdb
[9:0:3:0]    tape    TANDBERG TS800            0468  /dev/st0

cat /proc/scsi/scsi

Attached devices:

Host: scsi0 Channel: 00 Id: 00 Lun: 00
  Vendor: Huawei   Model: ARC-1230-VOL#00  Rev: R001
  Type:   Direct-Access                    ANSI  SCSI revision: 05
Host: scsi0 Channel: 00 Id: 16 Lun: 00
  Vendor: Areca    Model: RAID controller  Rev: R001
  Type:   Processor                        ANSI  SCSI revision: 00

Host: scsi1 Channel: 00 Id: 00 Lun: 00
  Vendor: HL-DT-ST Model: DVDRAM_GSA-H60N  Rev: CA01
  Type:   CD-ROM                           ANSI  SCSI revision: 05
Host: scsi6 Channel: 00 Id: 00 Lun: 00
  Vendor: ATA      Model: ST3250823AS      Rev: 3.01
  Type:   Direct-Access                    ANSI  SCSI revision: 05
Host: scsi9 Channel: 00 Id: 03 Lun: 00
  Vendor: TANDBERG Model: TS800            Rev: 0468
  Type:   Sequential-Access                ANSI  SCSI revision: 03

Right now we are up s--- creek without a paddle and have NO redundancy (a tape backup had failed the previous night) so all suggestions welcome!
Please feel free to ask any other questions!


Edit: Solution
Since I found the solution, I will post this here in order to help others:

1). pacman -S makedev
2). cd /dev && MAKEDEV sg
3). ???

Last edited by DrMikeDuke (2012-09-22 13:00:44)

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