anschluss

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Everything posted by anschluss

  1. That is indeed the case. Here's my story of trying the "PCIe 2.0 X4 to SATA III 6-Port Adapter Card (ASM Chipset) for IPFS Mining - Model SU-SA3006.V1" card in my new server. It first seemed to "work" as far as it was capable of detecting and reading from disks. However, as soon as I tried to write to the array, it started producing an ever more frequent series of errors which made me believe that I had bad disks. This is just a small excerpt of the logs: Jan 15 02:28:33 pstore kernel: ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen Jan 15 02:28:33 pstore kernel: ata7.00: failed command: FLUSH CACHE EXT Jan 15 02:28:33 pstore kernel: ata7.00: cmd ea/00:00:00:00:00/00:00:00:00:00/a0 tag 18 Jan 15 02:28:33 pstore kernel: res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) Jan 15 02:28:33 pstore kernel: ata7.00: status: { DRDY } Jan 15 02:28:33 pstore kernel: ata7: hard resetting link Jan 15 02:28:34 pstore kernel: ata7: SATA link up 6.0 Gbps (SStatus 133 SControl 300) Jan 15 02:28:39 pstore kernel: ata7.00: qc timeout (cmd 0x27) Jan 15 02:28:39 pstore kernel: ata7.00: failed to read native max address (err_mask=0x4) Jan 15 02:28:39 pstore kernel: ata7.00: HPA support seems broken, skipping HPA handling Jan 15 02:28:39 pstore kernel: ata7.00: revalidation failed (errno=-5) Jan 15 02:28:39 pstore kernel: ata7: hard resetting link Jan 15 02:28:39 pstore kernel: ata7: SATA link up 6.0 Gbps (SStatus 133 SControl 300) Jan 15 02:28:45 pstore kernel: ata7.00: qc timeout (cmd 0xef) Jan 15 02:28:45 pstore kernel: ata7.00: failed to enable AA (error_mask=0x4) Jan 15 02:28:45 pstore kernel: ata7.00: revalidation failed (errno=-5) Jan 15 02:28:45 pstore kernel: ata7: limiting SATA link speed to 3.0 Gbps Jan 15 02:28:45 pstore kernel: ata7: hard resetting link Jan 15 02:28:45 pstore kernel: ata7: SATA link up 6.0 Gbps (SStatus 133 SControl 320) Jan 15 02:29:00 pstore kernel: ata7.00: qc timeout (cmd 0xef) Jan 15 02:29:00 pstore kernel: ata7.00: failed to set xfermode (err_mask=0x4) Jan 15 02:29:00 pstore kernel: ata7.00: disabled Jan 15 02:29:01 pstore kernel: ata7: SATA link up 3.0 Gbps (SStatus 123 SControl 320) Jan 15 02:29:01 pstore kernel: ata7: EH complete Jan 15 02:29:01 pstore kernel: sd 7:0:0:0: [sdb] tag#20 UNKNOWN(0x2003) Result: hostbyte=0x04 driverbyte=0x00 Jan 15 02:29:01 pstore kernel: sd 7:0:0:0: [sdb] tag#20 CDB: opcode=0x88 88 00 00 00 00 00 00 00 00 40 00 00 00 08 00 00 Jan 15 02:29:01 pstore kernel: print_req_error: I/O error, dev sdb, sector 64 Jan 15 02:29:01 pstore kernel: md: disk1 read error, sector=0 Jan 15 02:29:01 pstore kernel: sd 7:0:0:0: [sdb] tag#22 UNKNOWN(0x2003) Result: hostbyte=0x04 driverbyte=0x00 Jan 15 02:29:01 pstore kernel: sd 7:0:0:0: [sdb] tag#22 CDB: opcode=0x35 35 00 00 00 00 00 00 00 00 00 Jan 15 02:29:01 pstore kernel: print_req_error: I/O error, dev sdb, sector 2930303272 Jan 15 02:29:01 pstore kernel: md: disk1 write error, sector=2930303208 Jan 15 02:29:01 pstore kernel: print_req_error: I/O error, dev sdb, sector 2930303264 After replacing all cables and two drives to no avail, I remembered that I had another cheap multiport SATA card lying around, and lo and behold: no more errors! The present card is a PCE8SAT-M01 (around $20 from Aliexpress) which I thought would be even crappier than the 6-port. It only has one PCIe lane so I wasn't surprised that it only transfers around 430 MB/sec (six "old"/PMR WD Red drives) - but at least it does that without conking out! If you're interested in some technical background, I found an excellent article on its performance: 8 Port SATA on a PCIE 1x lane While I'm waiting for a card with a bit more "oomph", this cheap controller is serving me well to keep the server running until then.