(please cc me, as i´m not subscribed to linux-kernel/ide - thanks) hi, we have some Fujitsu Siemens Celsius M450 workstations (Intel 975X Express chipset) running Linux Kernel 2.6.22 (Debian, Ubuntu) on an md raid 1 using two Western Digital Raptor drives, it´s the WD800ADFS which is an oem version (you will find them in workstations from HP, IBM, Dell, Fujitsu-Siemens,... and they have different model numbers) using ahci and ncq we are experiencing low performace, and many hsm violations, sometimes also timeouts, so i think this drive should be added to the libata ncq blacklist, as the WD740ADFD is already blacklisted and the Raptor series generally seems to have some ncq issues... kind regards, simon. drive information: /dev/sda: ATA device, with non-removable media Model Number: WDC WD800ADFS-07SLR4 Serial Number: WD-WMANS1****** Firmware Revision: 21.07QR4 Standards: Used: ATA/ATAPI-7 published, ANSI INCITS 397-2005 Supported: 7 6 5 4 Configuration: Logical max current cylinders 16383 16383 heads 16 16 sectors/track 63 63 -- CHS current addressable sectors: 16514064 LBA user addressable sectors: 156301488 LBA48 user addressable sectors: 156301488 device size with M = 1024*1024: 76319 MBytes device size with M = 1000*1000: 80026 MBytes (80 GB) Capabilities: LBA, IORDY(can be disabled) Queue depth: 32 Standby timer values: spec'd by Standard, with device specific minimum R/W multiple sector transfer: Max = 16 Current = 16 Recommended acoustic management value: 128, current value: 254 DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6 Cycle time: min=120ns recommended=120ns PIO: pio0 pio1 pio2 pio3 pio4 Cycle time: no flow control=120ns IORDY flow control=120ns Commands/features: Enabled Supported: * SMART feature set Security Mode feature set * Power Management feature set * Write cache * Look-ahead * Host Protected Area feature set * WRITE_BUFFER command * READ_BUFFER command * NOP cmd * DOWNLOAD_MICROCODE Power-Up In Standby feature set * SET_FEATURES required to spinup after power up SET_MAX security extension * Automatic Acoustic Management feature set * 48-bit Address feature set * Device Configuration Overlay feature set * Mandatory FLUSH_CACHE * FLUSH_CACHE_EXT * SMART error logging * SMART self-test * General Purpose Logging feature set * 64-bit World wide name * SATA-I signaling speed (1.5Gb/s) * SATA-II signaling speed (3.0Gb/s) * Native Command Queueing (NCQ) * Host-initiated interface power management * Phy event counters DMA Setup Auto-Activate optimization Device-initiated interface power management * Software settings preservation * SMART Command Transport (SCT) feature set * SCT Long Sector Access (AC1) * SCT LBA Segment Access (AC2) * SCT Error Recovery Control (AC3) * SCT Features Control (AC4) * SCT Data Tables (AC5) unknown 206[12] Security: Master password revision code = 65534 supported not enabled not locked frozen not expired: security count not supported: enhanced erase Checksum: correct some of the kernel messages: [70747.193717] ata3.00: exception Emask 0x2 SAct 0xfe00 SErr 0x0 action 0x2 frozen [70747.193725] ata3.00: (spurious completions during NCQ issue=0x0 SAct=0xfe00 FIS=004040a1:00000100) [70747.193734] ata3.00: cmd 61/20:48:d2:9d:24/00:00:08:00:00/40 tag 9 cdb 0x0 data 16384 out [70747.193736] res 40/00:78:42:ae:24/00:00:08:00:00/40 Emask 0x2 (HSM violation) ... [70747.193789] ata3.00: cmd 61/08:78:42:ae:24/00:00:08:00:00/40 tag 15 cdb 0x0 data 4096 out [70747.193791] res 40/00:78:42:ae:24/00:00:08:00:00/40 Emask 0x2 (HSM violation) [70747.502219] ata3: soft resetting port [70747.673864] ata3: SATA link up 3.0 Gbps (SStatus 123 SControl 300) [70747.678834] ata3.00: configured for UDMA/133 [70747.678853] ata3: EH complete [143055.609784] ata4.00: exception Emask 0x2 SAct 0xe811 SErr 0x0 action 0x2 frozen [143055.609800] ata4.00: (spurious completions during NCQ issue=0x0 SAct=0xe811 FIS=004040a1:00000080) [143055.609809] ata4.00: cmd 61/10:00:02:68:56/00:00:00:00:00/40 tag 0 cdb 0x0 data 8192 out [143055.609811] res 40/00:78:6a:d7:59/00:00:02:00:00/40 Emask 0x2 (HSM violation) ... [143055.609870] ata4.00: cmd 61/08:78:6a:d7:59/00:00:02:00:00/40 tag 15 cdb 0x0 data 4096 out [143055.609872] res 40/00:78:6a:d7:59/00:00:02:00:00/40 Emask 0x2 (HSM violation) [143055.920558] ata4: soft resetting port [143056.092224] ata4: SATA link up 3.0 Gbps (SStatus 123 SControl 300) [143056.097130] ata4.00: configured for UDMA/133 [143056.097146] ata4: EH complete [234300.421373] ata4.00: exception Emask 0x0 SAct 0x7fff SErr 0x0 action 0x2 frozen [234300.421386] ata4.00: cmd 60/08:00:f2:fc:71/00:00:00:00:00/40 tag 0 cdb 0x0 data 4096 in [234300.421388] res 40/00:48:92:e9:9d/00:00:04:00:00/40 Emask 0x4 (timeout) ... [234300.421511] ata4.00: cmd 60/08:70:5a:b0:16/00:00:08:00:00/40 tag 14 cdb 0x0 data 4096 in [234300.421513] res 40/00:88:7a:68:56/00:00:00:00:00/40 Emask 0x4 (timeout) [234300.732730] ata4: soft resetting port [234300.904388] ata4: SATA link up 3.0 Gbps (SStatus 123 SControl 300) [234300.909120] ata4.00: configured for UDMA/133 [234300.909149] ata4: EH complete - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html