Investigating the IORDY problem I did cross-build a custom 2.6.30.4
(from kernel.org) arm kernel and patched it accordingly to [1].
What results is : Compact Flash is now *detected* but when using it in
real life (mkswap+swapon) things are getting bad.
at boot time :
[ 2.190000] SCSI subsystem initialized
[ 2.410000] libata version 3.00 loaded.
[ 2.460000] sata_mv sata_mv.0: version 1.28
[ 2.470000] sata_mv sata_mv.0: slots 32 ports 2
[ 2.480000] scsi0 : sata_mv
[ 2.480000] scsi1 : sata_mv
[ 2.480000] ata1: SATA max UDMA/133 irq 29
[ 2.490000] ata2: SATA max UDMA/133 irq 29
[ 3.000000] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ 3.060000] ata1.00: CFA: LEXAR ATA FLASH, V2.02, max PIO4
[ 3.060000] ata1.00: 2003904 sectors, multi 0: LBA
[ 3.070000] ata1.00: applying bridge limits
[ 3.110000] ata1.00: configured for PIO4
[ 3.170000] ata1.00: configured for PIO4
[ 3.170000] ata1: EH complete
[ 3.170000] scsi 0:0:0:0: Direct-Access ATA LEXAR ATA
FLASH V2.0 PQ: 0 ANSI: 5
[ 3.690000] ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[ 3.710000] ata2.00: ATA-7: SAMSUNG HD103UJ, 1AA01118, max UDMA7
[ 3.710000] ata2.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 31/32)
[ 3.740000] ata2.00: configured for UDMA/133
[ 3.740000] scsi 1:0:0:0: Direct-Access ATA SAMSUNG
HD103UJ 1AA0 PQ: 0 ANSI: 5
[ 5.750000] Driver 'sd' needs updating - please use bus_type methods
[ 5.760000] sd 0:0:0:0: [sda] 2003904 512-byte hardware sectors:
(1.02 GB/978 MiB)
[ 5.760000] sd 0:0:0:0: [sda] Write Protect is off
[ 5.770000] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[ 5.770000] sd 0:0:0:0: [sda] Write cache: disabled, read cache:
enabled, doesn't support DPO or FUA
[ 5.780000] sda:<4>ata1: sata_mv: attempting PIO w/multiple DRQ:
this may fail due to h/w errata
[ 5.810000] sda1
[ 5.810000] ata1: sata_mv: attempting PIO w/multiple DRQ: this may
fail due to h/w errata
[ 5.860000] sd 0:0:0:0: [sda] Attached SCSI removable disk
[ 5.870000] sd 1:0:0:0: [sdb] 1953525168 512-byte hardware sectors:
(1.00 TB/931 GiB)
[ 5.880000] sd 1:0:0:0: [sdb] Write Protect is off
[ 5.880000] sd 1:0:0:0: [sdb] Mode Sense: 00 3a 00 00
[ 5.880000] sd 1:0:0:0: [sdb] Write cache: enabled, read cache:
enabled, doesn't support DPO or FUA
[ 5.890000] sdb: sdb1 sdb2
[ 5.900000] sd 1:0:0:0: [sdb] Attached SCSI disk
[ 6.870000] ata1: sata_mv: attempting PIO w/multiple DRQ: this may
fail due to h/w errata
[ 6.880000] ata1: sata_mv: attempting PIO w/multiple DRQ: this may
fail due to h/w errata
[ 6.900000] ata1: sata_mv: attempting PIO w/multiple DRQ: this may
fail due to h/w errata
[ 6.920000] ata1: sata_mv: attempting PIO w/multiple DRQ: this may
fail due to h/w errata
[ 6.940000] ata1: sata_mv: attempting PIO w/multiple DRQ: this may
fail due to h/w errata
[ 6.960000] ata1: sata_mv: attempting PIO w/multiple DRQ: this may
fail due to h/w errata
[ 6.980000] ata1: sata_mv: attempting PIO w/multiple DRQ: this may
fail due to h/w errata
[ 7.010000] ata1: sata_mv: attempting PIO w/multiple DRQ: this may
fail due to h/w errata
[ 7.890000] device-mapper: uevent: version 1.0.3
[...]
and after swapon and running memory demanding application :
[ 2149.180000] ata1: hard resetting link
[ 2149.700000] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
[ 2149.780000] ata1.00: configured for PIO0
[ 2149.820000] ata1.00: configured for PIO0
[ 2149.820000] sd 0:0:0:0: [sda] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[ 2149.830000] sd 0:0:0:0: [sda] Sense Key : Aborted Command [current]
[descriptor]
[ 2149.830000] Descriptor sense data with sense descriptors (in hex):
[ 2149.840000] 72 0b 47 00 00 00 00 0c 00 0a 80 00 00 00 00 00
[ 2149.850000] 00 00 80 f7
[ 2149.850000] sd 0:0:0:0: [sda] Add. Sense: Scsi parity error
[ 2149.860000] end_request: I/O error, dev sda, sector 33015
[ 2149.860000] Write-error on swap-device (8:0:33023)
[ 2149.870000] Write-error on swap-device (8:0:33031)
[ 2149.870000] Write-error on swap-device (8:0:33039)
[...]
[ 2150.010000] Write-error on swap-device (8:0:33271)
[ 2150.020000] ata1: EH complete
[ 2150.060000] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
[ 2150.070000] ata1.00: cmd 30/00:00:f7:81:00/00:00:00:00:00/e0 tag 0
pio 131072 out
[ 2150.070000] res 58/00:00:f7:81:00/00:00:00:00:00/e0 Emask
0x2 (HSM violation)
[ 2150.080000] ata1.00: status: { DRDY DRQ }
[ 2150.090000] ata1: hard resetting link
While that's happening, userland is unresponsive.
On a side note, just running hdparm on it doesn't trigger all those errors :
$ sudo hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 160 MB in 2.02 seconds = 79.31 MB/sec
Timing buffered disk reads: 14 MB in 3.39 seconds = 4.13 MB/sec
Cheers
[1] http://patchwork.ozlabs.org/patch/29080/
--
Mathieu
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