Date: Tue, 21 Aug 2018 14:30:49 -0400 From: Mike Tancsa <mike@sentex.net> To: Eugene Grosbein <eugen@grosbein.net>, FreeBSD-STABLE Mailing List <freebsd-stable@FreeBSD.org> Subject: Re: gpart strangeness Message-ID: <62183e11-77ad-9b6d-ed57-357764e988d8@sentex.net> In-Reply-To: <f56bf69b-45a2-e080-550c-2b08a6c2a28e@grosbein.net> References: <4e5b6d81-7fc5-c538-2bd2-8cd5dd040a1d@sentex.net> <6be4ee74-c09d-b88f-e4ed-cadb1537e478@grosbein.net> <7886da80-d2e3-1562-07df-cb955d888e1b@sentex.net> <f56bf69b-45a2-e080-550c-2b08a6c2a28e@grosbein.net>
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On 8/21/2018 9:51 AM, Eugene Grosbein wrote: > > It seems like faulty media to me: it silently returns bad data. > > There is an easy way to verify this just with naked eye: > > yes | dd bs=128k of=/dev/ada0 > hd /dev/ada0 > > That is, hd(1) should write back only 3 lines of output: > > 00000000 79 0a 79 0a 79 0a 79 0a 79 0a 79 0a 79 0a 79 0a |y.y.y.y.y.y.y.y.| > * > 01000000 > > If not, the media if faulty. > There are 3 of these disks I found. Unfortunately, they all seem a little different from the revision stamps on the board. They are all from PCEngines who generally seem to source quality products. This is in an APU3 A "bad" disk 0# camcontrol identify ada0 pass0: <SATA SSD S9FM02.0> ACS-3 ATA SATA 3.x device pass0: 600.000MB/s transfers (SATA 3.x, PIO4, PIO 8192bytes) protocol ATA/ATAPI-10 SATA 3.x device model SATA SSD firmware revision S9FM02.0 serial number DED9075313EC01677930 cylinders 16383 heads 16 sectors/track 63 sector size logical 512, physical 512, offset 0 LBA supported 31277232 sectors LBA48 supported 31277232 sectors PIO supported PIO4 DMA supported WDMA2 UDMA6 media RPM non-rotating Zoned-Device Commands no Feature Support Enabled Value Vendor read ahead yes yes write cache yes yes flush cache yes yes overlap no Tagged Command Queuing (TCQ) no no Native Command Queuing (NCQ) yes 32 tags NCQ Queue Management no NCQ Streaming no Receive & Send FPDMA Queued no SMART yes yes microcode download yes yes security yes no power management yes yes advanced power management yes no 0/0x00 automatic acoustic management no no media status notification no no power-up in Standby no no write-read-verify no no unload yes yes general purpose logging yes yes free-fall no no Data Set Management (DSM/TRIM) yes DSM - max 512byte blocks yes 8 DSM - deterministic read no Host Protected Area (HPA) yes no 31277232/31277232 HPA - Security no 0# vs a 'good' disk # camcontrol identify ada0 pass0: <SATA SSD SBFM01.0> ACS-4 ATA SATA 3.x device pass0: 600.000MB/s transfers (SATA 3.x, PIO4, PIO 8192bytes) protocol ATA/ATAPI-11 SATA 3.x device model SATA SSD firmware revision SBFM01.0 serial number A44907781CE300040613 WWN 5000000000000000 cylinders 16383 heads 16 sectors/track 63 sector size logical 512, physical 512, offset 0 LBA supported 31277232 sectors LBA48 supported 31277232 sectors PIO supported PIO4 DMA supported WDMA2 UDMA6 media RPM non-rotating Zoned-Device Commands no Feature Support Enabled Value Vendor read ahead yes yes write cache yes yes flush cache yes yes overlap no Tagged Command Queuing (TCQ) no no Native Command Queuing (NCQ) yes 32 tags NCQ Queue Management no NCQ Streaming no Receive & Send FPDMA Queued no SMART yes yes microcode download yes yes security yes no power management yes yes advanced power management no no automatic acoustic management no no media status notification no no power-up in Standby no no write-read-verify no no unload no no general purpose logging yes yes free-fall no no Data Set Management (DSM/TRIM) yes DSM - max 512byte blocks yes 8 DSM - deterministic read no Host Protected Area (HPA) yes no 31277232/31277232 HPA - Security no % diff good bad 1c1 < pass0: <SATA SSD SBFM01.0> ACS-4 ATA SATA 3.x device --- > pass0: <SATA SSD S9FM02.0> ACS-3 ATA SATA 3.x device 4c4 < protocol ATA/ATAPI-11 SATA 3.x --- > protocol ATA/ATAPI-10 SATA 3.x 6,8c6,7 < firmware revision SBFM01.0 < serial number A44907781CE300040613 < WWN 5000000000000000 --- > firmware revision S9FM02.0 > serial number DED9075313EC01677930 34c33 < advanced power management no no --- > advanced power management yes no 0/0x00 39c38 < unload no no --- > unload yes yes 46a46 > 1# yes | dd bs=128k of=/dev/ada0 dd: /dev/ada0: short write on character device dd: /dev/ada0: end of device 0+1066621 records in 122176+1 records out 16013942784 bytes transferred in 566.461990 secs (28270110 bytes/sec) 1# hd /dev/ada0 00000000 79 0a 79 0a 79 0a 79 0a 79 0a 79 0a 79 0a 79 0a |y.y.y.y.y.y.y.y.| * 3ba816000 0# -- ------------------- Mike Tancsa, tel +1 519 651 3400 x203 Sentex Communications, mike@sentex.net Providing Internet services since 1994 www.sentex.net Cambridge, Ontario Canada
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