Date: Tue, 7 Nov 2017 06:43:06 +0300 From: Andrew Vylegzhanin <avv314@gmail.com> To: Scott Long <scottl@samsco.org> Cc: freebsd-scsi@freebsd.org Subject: Re: LSI2008 and SAS3 backplane Message-ID: <CA%2BBi_YhcqakQ-WFCrAajrtH3T9WvBzZdhR147LBKLqkfkWthog@mail.gmail.com> In-Reply-To: <24CF75B3-D75C-41B2-952A-77E94152F3D8@samsco.org> References: <CA%2BBi_Yj7LNVB86-o_PmWMxeiz8DZ6n-8jyFpngOAmKJXCxL4nQ@mail.gmail.com> <24CF75B3-D75C-41B2-952A-77E94152F3D8@samsco.org>
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2017-11-07 3:26 GMT+03:00 Scott Long <scottl@samsco.org>: > Hi, > > Hi, If you=E2=80=99re using FreeBSD 11 or later, try running the following: > mpsutil show devices > It's empty: [root@zc-dtrs-s1 ~]# freebsd-version 11.1-RELEASE-p2 [root@zc-dtrs-s1 ~]# mpsutil show devices B____T SAS Address Handle Parent Device Speed Enc Slot Wdt [root@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@gmail.com> wrote= : > > > > Hi! > > > > I have a problem with low transfer speed (150MB/sec instead of 600Mb/se= c) > > 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 (Del= l > > MD1220) w/o problems. > > > > Any ideas? > > > > -- > > Andrew > > _______________________________________________ > > freebsd-scsi@freebsd.org mailing list > > https://lists.freebsd.org/mailman/listinfo/freebsd-scsi > > To unsubscribe, send any mail to "freebsd-scsi-unsubscribe@freebsd.org" > >
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