LSI2008 and SAS3 backplane

[Scott Long]

Sorry, you need

mpsutil -u 1 show devices

Scott

Sent from my iPhone

> On Nov 6, 2017, at 8:43 PM, Andrew Vylegzhanin <avv314 at gmail.com> wrote:
> 
> 
> 
> 2017-11-07 3:26 GMT+03:00 Scott Long <scottl at samsco.org>:
>> Hi,
>> 
> 
> Hi,
> 
>> If you’re using FreeBSD 11 or later, try running the following:
>> 
>> mpsutil show devices
> 
> 
>  It's empty:
> 
> [root at zc-dtrs-s1 ~]# freebsd-version 
> 11.1-RELEASE-p2
> [root at zc-dtrs-s1 ~]# mpsutil show devices
> B____T    SAS Address      Handle  Parent    Device        Speed Enc  Slot  Wdt
> 
> [root at zc-dtrs-s1 ~]# 
> 
> --
> Andrew
> 
>  
>> 
>> That will show what speed the drives are actually negotiated to.  This might shed some
>> light on the problem.
>> 
>> Scott
>> 
>> > On Nov 6, 2017, at 3:37 PM, Andrew Vylegzhanin <avv314 at gmail.com> wrote:
>> >
>> > Hi!
>> >
>> > I have a problem with low transfer speed (150MB/sec instead of 600Mb/sec)
>> > on SAS2 controller to SAS3 drive via SAS3 backplane.
>> >
>> > Hardware config is follows:
>> >
>> > Dell R720 box with Dell SAS HBA 6Gbps connected with Supermicro 45-bay JBOD
>> > with two SAS-3 expanders (LSI SAS3x40 and LSI SAS3x36). All drives (20 pcs)
>> > are SEAGATE ST6000NM0095 E002.
>> >
>> > So, partial dmesg out:
>> > ...
>> > mps1: <Avago Technologies (LSI) SAS2008> port 0x9c00-0x9cff mem
>> > 0xd0ff0000-0xd0ffffff,0xd0f80000-0xd0fbffff irq 66 at device 0.0
>> > numa-domain 1 on pci16
>> > mps1: Firmware: 07.15.08.00, Driver: 21.02.00.00-fbsd
>> > mps1: IOCCapabilities:
>> > 185c<ScsiTaskFull,DiagTrace,SnapBuf,EEDP,TransRetry,IR>
>> > ....
>> > ses1 at mps1 bus 0 scbus8 target 81 lun 0
>> > ses1: <LSI SAS3x40 0601> Fixed Enclosure Services SPC-3 SCSI device
>> > ses1: 150.000MB/s transfers
>> > ses1: Command Queueing enabled
>> > ses1: SCSI-3 ENC Device
>> > ses2 at mps1 bus 0 scbus8 target 82 lun 0
>> > ses2: <LSI SAS3x36 0601> Fixed Enclosure Services SPC-3 SCSI device
>> > ses2: 150.000MB/s transfers
>> > ses2: Command Queueing enabled
>> > ses2: SCSI-3 ENC Device
>> > ses1: da0: Element descriptor: 'Slot00'
>> > ....
>> > da0 at mps1 bus 0 scbus8 target 61 lun 0
>> > da3 at mps1 bus 0 scbus8 target 64 lun 0
>> > ...
>> > da0: <SEAGATE ST6000NM0095 E002> Fixed Direct Access SPC-4 SCSI device
>> > da0: Serial Number ZAD119P20000C730KZK3
>> > da0: 150.000MB/s transfers
>> > da0: Command Queueing enabled
>> > da0: 5723166MB (11721045168 512 byte sectors)
>> >
>> > Some additional info.
>> > There is two identical system with same problem.
>> > System is under load now, and there is no erros, timeouts on disk i/o, so
>> > it seems to be not cable/hardware problem.
>> > I've tried other vendor SATA3 drive, got same 150MB/s.
>> > This server works on full speed (600MB/s transfers) with SAS2 JBOD (Dell
>> > MD1220)  w/o problems.
>> >
>> > Any ideas?
>> >
>> > --
>> > Andrew
>> > _______________________________________________
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>> > https://lists.freebsd.org/mailman/listinfo/freebsd-scsi
>> > To unsubscribe, send any mail to "freebsd-scsi-unsubscribe at freebsd.org"
>> 
>