Date: Fri, 14 Apr 2023 22:51:39 -0700 From: David Christensen <dpchrist@holgerdanske.com> To: questions@freebsd.org Subject: Re: frequent disk error, need guidance Message-ID: <2367efa5-85f0-25a6-4845-f4ff5ba15fa8@holgerdanske.com> In-Reply-To: <CAFbbPugSrfP5mJes5XahT2Tv_pORDZ_Hae3_xPKRtrZ0-k73Rw@mail.gmail.com> References: <d5d43af7-58f4-656c-97c1-9d478db76096@dreamchaser.org> <CAFbbPugSrfP5mJes5XahT2Tv_pORDZ_Hae3_xPKRtrZ0-k73Rw@mail.gmail.com>
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On 4/14/23 20:57, Paul Procacci wrote: > On Fri, Apr 14, 2023 at 11:54 PM Gary Aitken <freebsd@dreamchaser.org> > wrote: > >> I'm seeing a boatload of the same error: >> (ada0:ata2:0:0:0): READ_DMA. ACB: c8 00 e2 c7 73 41 00 00 00 00 40 00 >> (ada0:ata2:0:0:0): CAM status: ATA Status Error >> (ada0:ata2:0:0:0): ATA status: 51 (DRDY SERV ERR), error: 40 (UNC ) >> (ada0:ata2:0:0:0): RES: 51 40 e7 c7 73 01 01 00 00 00 00 >> (ada0:ata2:0:0:0): Retrying command, 3 more tries remain >> repeated, with occasional: >> g_vfs_done():ada0p2[READ(offset=12474351616, length=32768)]error = 5 >> >> # smartctl --info /dev/da0 >> Model Family: Seagate Barracuda 7200.9 >> Device Model: ST3808110AS >> Serial Number: 4LR1HW1E >> Firmware Version: 3.ADH >> User Capacity: 80,000,000,000 bytes [80.0 GB] >> Sector Size: 512 bytes logical/physical >> Device is: In smartctl database 7.3/5319 >> ATA Version is: ATA/ATAPI-7 (minor revision not indicated) >> Local Time is: Fri Apr 14 09:43:01 2023 MDT >> SMART support is: Available - device has SMART capability. >> SMART support is: Enabled >> # smartctl --health /dev/da0 >> SMART overall-health self-assessment test result: PASSED >> >> # smartctl --test=long /dev/ada0 >> # smartctl --log=selftest /dev/ada0 >> Num Test_Description Remaining LBA_of_1st_error >> Status LifeTime(hours) >> >> # 1 Extended offline Completed: read failure 90% 7482 24365031 >> # 2 Short offline Completed: read failure 90% 7482 24365031 >> # 3 Short offline Completed: read failure 90% 7482 24365031 >> # 4 Short offline Completed without error 00% 0 - >> >> So I presume a bad block/sector on the disk. >> I had high hopes this article: >> https://www.freebsddiary.org/smart-fixing-bad-sector.php >> would show the way, but it seems to quit right at the good stuff. >> >> Can it be remapped, and if so, pointers to how? >> >> Thanks, >> >> Gary >> >> > That is a hardware error. UNC means uncorrectable data error. Either you > have a cable going bad or that drive is failing. > Maybe it's just intermittent at this stage, but I'd look at trying a new > cable/replacing that drive as the very first step. > > ~Paul > Do you need the data on the drive? The combination of DMA errors and a passing SMART test indicate a bad connection between the motherboard and the HDD. What is between the motherboard and the HDD? If there is a SATA cable involved, I would try replacing the cable with a brand-new SATA 6 Gbps cable with locking connectors. If the problems persist, I would try another SATA port. (You may have to deal with boot issues if you switch ports and there are other drives.) Seagate offers a diagnostic tool called "SeaTools". I prefer the bootable versions. You may need a Windows computer to create bootable media: https://www.seagate.com/support/downloads/seatools/ SeaTools can test, zero, and/or reset drives. Successful use of SeaTools might give you some more life out of the drive. That said, WikiPedia indicates the Barraduce 7200.9 series were introduced in 2005. For less than $20 you can get a good used SSD that is newer, larger, quicker (latency), and faster (throughput). David
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