Re: [smartmontools-support] Unknown_Attribute

[Kai M. <ka...@fi...>]

Adam Radford wrote:
>
>
> > I am also curious if anybody knows how to clearly define which 3ware
> > disks are which /dev/sd* device? I have 12 identical drives set up in 6
> > identical raid-1 arrays for this particular box, and I'd like to verify
> > which disks belong to which linux device. I am mostly interested in
> > knowing for sure which one is /dev/sda, since that drive has my OS on it
> > (for now).
>
> Kai,
>
> If you are confused about which disk is which, simply look in the /sys 
> filesystem
> entry for that disk.
>
> [root@linux2 /]# cat /sys/block/sda/device/vendor
> ATA    
>
> This is most likely a boot disk on a motherboard serial or parallel 
> ata port.
>
> [root@linux2 /]# cat /sys/block/sdb/device/vendor
> 3ware
>
> This device is an older 3ware 5/6/7/8000 series raid unit or JBOD disk.
>
> [root@linux2 /]# cat /sys/block/sdc/device/vendor
> AMCC
>
> This device is a newer 3ware 9000 series raid unit or JBOD disk.
>
>
> You can also look in /var/log/messages or 'dmesg' output to see which 
> disk device
> names (/dev/sda, etc) are assigned to which scsi devices (Host, 
> Channel, ID, Lun):
>
> scsi1 : 3ware Storage Controller
> 3w-xxxx: scsi1: Found a 3ware Storage Controller at 0x9c00, IRQ: 225.
>   Vendor: 3ware     Model: Logical Disk 7    Rev: 1.2
>   Type:   Direct-Access                      ANSI SCSI revision: 00
> SCSI device sdb: 312581808 512-byte hdwr sectors (160042 MB)
> sdb: Write Protect is off
> sdb: Mode Sense: 00 00 00 00
> SCSI device sdb: drive cache: write back w/ FUA
> SCSI device sdb: 312581808 512-byte hdwr sectors (160042 MB)
> sdb: Write Protect is off
> sdb: Mode Sense: 00 00 00 00
> SCSI device sdb: drive cache: write back w/ FUA
>  sdb: sdb1 sdb2 < sdb5 >
> sd 1:0:7:0: Attached scsi disk sdb
>
> Above note the "scsi1: 3ware Storage Controller" line, which indicates
> that the 3ware controller is on scsi "host 1".
>
> Above you see that disk '/dev/sdb' was assigned by the OS to Host: 1, 
> Channel: 0,
> ID: 7, Lun: 0. as noted by the line:  "sd 1:0:7:0: Attached scsi disk sdb"
>
> Therefore, you can tell that ID 7, (/dev/sdb) which is assigned to 
> Host 1 is
> attached to a 3ware controller.
>
> Output from the tw_cli (3ware command line software) on the same 
> system shows:
>
> [root@linux2 /]# /root/tw_cli
> //linux2> info
>
> Ctl   Model        (V)Ports  Drives   Units   NotOpt  RRate   VRate  BBU
> ------------------------------------------------------------------------
> c1    8506-12      12        1        1       0       2       -      
> -       
>
> Here we see "c1" Controller 1, which is the same as "scsi host 1" or 
> "scsi1" in the
> above output.
>
> //linux2> info c1
>
> Unit  UnitType  Status         %RCmpl  %V/I/M  Stripe  Size(GB)  
> Cache  AVrfy
> ------------------------------------------------------------------------------
> u7    JBOD      OK             -       -       -       149.051   
> ON     -     
>
> Port   Status           Unit   Size        Blocks        Serial
> ---------------------------------------------------------------
> p0     NOT-PRESENT      -      -           -             -
> p1     NOT-PRESENT      -      -           -             -
> p2     NOT-PRESENT      -      -           -             -
> p3     NOT-PRESENT      -      -           -             -
> p4     NOT-PRESENT      -      -           -             -
> p5     NOT-PRESENT      -      -           -             -
> p6     NOT-PRESENT      -      -           -             -
> p7     OK               u7     149.05 GB   312581808     
> WD-WCANM1024184    
> p8     NOT-PRESENT      -      -           -             -
> p9     NOT-PRESENT      -      -           -             -
> p10    NOT-PRESENT      -      -           -             -
> p11    NOT-PRESENT      -      -           -             -
>
> Here we see "u7" or "unit id 7" which is the same as "ID 7" in the above
> output.  Therefore we can conclude that 3ware controller ID 1, unit 7 
> on port 7
> is in fact /dev/sdb.
>
> -Adam
>
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Again, thanks for your help Adam. One problem I've run into is that some 
of my systems have been up long enough that /var/log/messages has rolled 
over, and I no longer have these types of lines in /var/log/messages or 
dmesg:
sd 1:0:7:0: Attached scsi disk sdb

Is there anywhere else this relationship is described like this? Or a 
way to re-log this data?

-Kai Meyer