[Lustre-discuss] Lustre IOkit newbie: sgpdd-survey

[Aaron Knister]

I think it wants a raw device, not a partition. Also, I noticed you're using
two 7tb partitions on a single 14tb lun. You're going to really hurt your
performance by doing it that way. Just my $.02.

On Tue, Jul 22, 2008 at 3:03 PM, Ms. Megan Larko <dobsonunit at gmail.com>
wrote:

> Hi,
>
> I am a neophyte trying to benchmark new hardware for a Lustre setup.
> I got the Lustre IOkit noarch rpm and installed it onto the OSS.  I
> edited the file /usr/bin/sgpdd-survey (attached) to meet the
> description of our OSS (RAM is 16Gb, sample new hardware detected at
> /dev/sdg).
>
> My initial running of sgpdd-survey produced the following errors:
> [root at oss4 ~]# sgpdd-survey
> Can't find SG device for /dev/sdg1, testing for partition
> /usr/bin/sgpdd-survey: line 105: CAPACITY
> trying
> 0x200: syntax error in expression (error token is "trying
> 0x200")
> /usr/bin/sgpdd-survey: line 106: [: ==: unary operator expected
> Tue Jul 22 14:46:48 EDT 2008 sgpdd-survey on /dev/sdg1 from oss4.crew.local
> /usr/bin/sgpdd-survey: line 134: rsz*1024/bs: division by 0 (error token is
> "s")
>
> System Info:
> [root at oss4 ~]# uname -a
> Linux oss4.crew.local 2.6.18-53.1.13.el5_lustre.1.6.4.3smp #1 SMP Sun
> Feb 17 08:38:44 EST 2008 x86_64 x86_64 x86_64 GNU/Linux
> [root at oss4 ~]# cat /etc/redhat-release
> CentOS release 5 (Final)
>
> The physical device is there.  I did format it into two 7Tb partitions
> just to give it an earlier test.  Do I have to un-format it for
> sgpdd-survey?
>
> [root at oss4 ~]# parted /dev/sdg
> GNU Parted 1.8.1
> Using /dev/sdg
> Welcome to GNU Parted! Type 'help' to view a list of commands.
> (parted) print
>
> Model: LSI MegaRAID 8888ELP (scsi)
> Disk /dev/sdg: 14.0TB
> Sector size (logical/physical): 512B/512B
> Partition Table: gpt
>
> Number  Start   End     Size    File system  Name  Flags
>  1      17.4kB  7000GB  7000GB  ext3         sdg1
>  2      7000GB  14.0TB  6986GB  ext3         sdg2
>
> (parted) q
> Information: Don't forget to update /etc/fstab, if necessary.
>
> Any advice for testing a new system with sgpdd-survey?
>
> Advice appreciated!
> megan
>
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