[PATCH, repost] Prevent interface errors with Seagate FreeAgent GoFlex

From: Daniel J Blueman
Date: Mon Jul 23 2012 - 00:22:42 EST

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When using my Seagate FreeAgent GoFlex eSATAp external disk enclosure,
interface errors are always seen until 1.5Gbps is negotiated [1]. This
occurs using any disk in the enclosure, and when the disk is connected
directly with a generic passive eSATAp cable, we see stable 3Gbps
operation as expected.

Blacklist 3Gbps mode to avoid dataloss and the ~30s delay bus reset
and renegotiation incurs.

Signed-off-by: Daniel J Blueman <daniel@xxxxxxxxx>
---
drivers/ata/libata-core.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 28db50b..0781510 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4119,6 +4119,7 @@ static const struct ata_blacklist_entry
ata_device_blacklist [] = {

/* Devices which aren't very happy with higher link speeds */
{ "WD My Book", NULL, ATA_HORKAGE_1_5_GBPS, },
+ { "Seagate FreeAgent GoFlex", NULL, ATA_HORKAGE_1_5_GBPS, },

/*
* Devices which choke on SETXFER. Applies only if both the

--- [1]

<disk plugged into external eSATAp port>
ata5: exception Emask 0x10 SAct 0x0 SErr 0x4050000 action 0xe frozen
ata5: irq_stat 0x00400040, connection status changed
ata5: SError: { PHYRdyChg CommWake DevExch }
ata5: hard resetting link
ata5: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata5.00: ATA-8: Seagate FreeAgent GoFlex, 0110, max UDMA/133
ata5.00: 2930277168 sectors, multi 0: LBA48
ata5.00: configured for UDMA/133
ata5: EH complete
scsi 4:0:0:0: Direct-Access ATA Seagate FreeAgen 0110 PQ: 0 ANSI: 5
sd 4:0:0:0: [sdb] 2930277168 512-byte logical blocks: (1.50 TB/1.36 TiB)
sd 4:0:0:0: [sdb] 4096-byte physical blocks
sd 4:0:0:0: [sdb] Write Protect is off
sd 4:0:0:0: [sdb] Mode Sense: 00 3a 00 00
sd 4:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
sd 4:0:0:0: Attached scsi generic sg1 type 0
sdb: unknown partition table
sd 4:0:0:0: [sdb] Attached SCSI disk
EXT4-fs (dm-0): mounted filesystem with ordered data mode. Opts: (null)
ata5.00: exception Emask 0x10 SAct 0x0 SErr 0x400100 action 0x6 frozen
ata5.00: irq_stat 0x08000000, interface fatal error
ata5: SError: { UnrecovData Handshk }
ata5.00: failed command: WRITE DMA EXT
ata5.00: cmd 35/00:00:38:db:61/00:04:6d:00:00/e0 tag 0 dma 524288 out
res 50/00:00:37:db:61/00:00:6d:00:00/e0 Emask 0x10 (ATA bus error)
ata5.00: status: { DRDY }
ata5: hard resetting link
ata5: link is slow to respond, please be patient (ready=0)
ata5: COMRESET failed (errno=-16)
ata5: hard resetting link
ata5: link is slow to respond, please be patient (ready=0)
ata5: COMRESET failed (errno=-16)
ata5: hard resetting link
ata5: link is slow to respond, please be patient (ready=0)
ata5: COMRESET failed (errno=-16)
ata5: limiting SATA link speed to 1.5 Gbps
ata5: hard resetting link
ata5: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
ata5.00: configured for UDMA/133
sd 4:0:0:0: [sdb]
Result: hostbyte=0x00 driverbyte=0x08
sd 4:0:0:0: [sdb]
Sense Key : 0xb [current] [descriptor]
Descriptor sense data with sense descriptors (in hex):
72 0b 00 00 00 00 00 0c 00 0a 80 00 00 00 00 00
6d 61 db 37
sd 4:0:0:0: [sdb]
ASC=0x0 ASCQ=0x0
sd 4:0:0:0: [sdb] CDB:
cdb[0]=0x2a: 2a 00 6d 61 db 38 00 04 00 00
end_request: I/O error, dev sdb, sector 1835129656
Buffer I/O error on device dm-0, logical block 229390950
Buffer I/O error on device dm-0, logical block 229390951
Buffer I/O error on device dm-0, logical block 229390952
Buffer I/O error on device dm-0, logical block 229390953
Buffer I/O error on device dm-0, logical block 229390954
Buffer I/O error on device dm-0, logical block 229390955
Buffer I/O error on device dm-0, logical block 229390956
Buffer I/O error on device dm-0, logical block 229390957
Buffer I/O error on device dm-0, logical block 229390958
Buffer I/O error on device dm-0, logical block 229390959
Buffer I/O error on device dm-0, logical block 229390960
Buffer I/O error on device dm-0, logical block 229390961
Buffer I/O error on device dm-0, logical block 229390962
Buffer I/O error on device dm-0, logical block 229390963
Buffer I/O error on device dm-0, logical block 229390964
Buffer I/O error on device dm-0, logical block 229390965
Buffer I/O error on device dm-0, logical block 229390966
Buffer I/O error on device dm-0, logical block 229390967
Buffer I/O error on device dm-0, logical block 229390968
Buffer I/O error on device dm-0, logical block 229390969
Buffer I/O error on device dm-0, logical block 229390970
Buffer I/O error on device dm-0, logical block 229390971
Buffer I/O error on device dm-0, logical block 229390972
Buffer I/O error on device dm-0, logical block 229390973
Buffer I/O error on device dm-0, logical block 229390974
Buffer I/O error on device dm-0, logical block 229390975
Buffer I/O error on device dm-0, logical block 229390976
Buffer I/O error on device dm-0, logical block 229390977
Buffer I/O error on device dm-0, logical block 229390978
Buffer I/O error on device dm-0, logical block 229390979
Buffer I/O error on device dm-0, logical block 229390980
Buffer I/O error on device dm-0, logical block 229390981
Buffer I/O error on device dm-0, logical block 229390982
Buffer I/O error on device dm-0, logical block 229390983
Buffer I/O error on device dm-0, logical block 229390984
Buffer I/O error on device dm-0, logical block 229390985
Buffer I/O error on device dm-0, logical block 229390986
Buffer I/O error on device dm-0, logical block 229390987
Buffer I/O error on device dm-0, logical block 229390988
Buffer I/O error on device dm-0, logical block 229390989
Buffer I/O error on device dm-0, logical block 229390990
Buffer I/O error on device dm-0, logical block 229390991
Buffer I/O error on device dm-0, logical block 229390992
Buffer I/O error on device dm-0, logical block 229390993
Buffer I/O error on device dm-0, logical block 229390994
Buffer I/O error on device dm-0, logical block 229390995
Buffer I/O error on device dm-0, logical block 229390996
Buffer I/O error on device dm-0, logical block 229390997
Buffer I/O error on device dm-0, logical block 229390998
Buffer I/O error on device dm-0, logical block 229390999
Buffer I/O error on device dm-0, logical block 229391000
Buffer I/O error on device dm-0, logical block 229391001
Buffer I/O error on device dm-0, logical block 229391002
Buffer I/O error on device dm-0, logical block 229391003
Buffer I/O error on device dm-0, logical block 229391004
Buffer I/O error on device dm-0, logical block 229391005
Buffer I/O error on device dm-0, logical block 229391006
Buffer I/O error on device dm-0, logical block 229391007
Buffer I/O error on device dm-0, logical block 229391008
Buffer I/O error on device dm-0, logical block 229391009
Buffer I/O error on device dm-0, logical block 229391010
Buffer I/O error on device dm-0, logical block 229391011
Buffer I/O error on device dm-0, logical block 229391012
Buffer I/O error on device dm-0, logical block 229391013
Buffer I/O error on device dm-0, logical block 229391014
Buffer I/O error on device dm-0, logical block 229391015
Buffer I/O error on device dm-0, logical block 229391016
Buffer I/O error on device dm-0, logical block 229391017
Buffer I/O error on device dm-0, logical block 229391018
Buffer I/O error on device dm-0, logical block 229391019
Buffer I/O error on device dm-0, logical block 229391020
Buffer I/O error on device dm-0, logical block 229391021
Buffer I/O error on device dm-0, logical block 229391022
Buffer I/O error on device dm-0, logical block 229391023
Buffer I/O error on device dm-0, logical block 229391024
Buffer I/O error on device dm-0, logical block 229391025
Buffer I/O error on device dm-0, logical block 229391026
Buffer I/O error on device dm-0, logical block 229391027
Buffer I/O error on device dm-0, logical block 229391028
Buffer I/O error on device dm-0, logical block 229391029
Buffer I/O error on device dm-0, logical block 229391030
Buffer I/O error on device dm-0, logical block 229391031
Buffer I/O error on device dm-0, logical block 229391032
Buffer I/O error on device dm-0, logical block 229391033
Buffer I/O error on device dm-0, logical block 229391034
Buffer I/O error on device dm-0, logical block 229391035
Buffer I/O error on device dm-0, logical block 229391036
Buffer I/O error on device dm-0, logical block 229391037
Buffer I/O error on device dm-0, logical block 229391038
Buffer I/O error on device dm-0, logical block 229391039
Buffer I/O error on device dm-0, logical block 229391040
Buffer I/O error on device dm-0, logical block 229391041
Buffer I/O error on device dm-0, logical block 229391042
Buffer I/O error on device dm-0, logical block 229391043
Buffer I/O error on device dm-0, logical block 229391044
Buffer I/O error on device dm-0, logical block 229391045
Buffer I/O error on device dm-0, logical block 229391046
Buffer I/O error on device dm-0, logical block 229391047
Buffer I/O error on device dm-0, logical block 229391048
Buffer I/O error on device dm-0, logical block 229391049
Buffer I/O error on device dm-0, logical block 229391050
Buffer I/O error on device dm-0, logical block 229391051
Buffer I/O error on device dm-0, logical block 229391052
Buffer I/O error on device dm-0, logical block 229391053
Buffer I/O error on device dm-0, logical block 229391054
Buffer I/O error on device dm-0, logical block 229391055
Buffer I/O error on device dm-0, logical block 229391056
Buffer I/O error on device dm-0, logical block 229391057
Buffer I/O error on device dm-0, logical block 229391058
Buffer I/O error on device dm-0, logical block 229391059
Buffer I/O error on device dm-0, logical block 229391060
Buffer I/O error on device dm-0, logical block 229391061
Buffer I/O error on device dm-0, logical block 229391062
Buffer I/O error on device dm-0, logical block 229391063
Buffer I/O error on device dm-0, logical block 229391064
Buffer I/O error on device dm-0, logical block 229391065
Buffer I/O error on device dm-0, logical block 229391066
Buffer I/O error on device dm-0, logical block 229391067
Buffer I/O error on device dm-0, logical block 229391068
Buffer I/O error on device dm-0, logical block 229391069
Buffer I/O error on device dm-0, logical block 229391070
Buffer I/O error on device dm-0, logical block 229391071
Buffer I/O error on device dm-0, logical block 229391072
Buffer I/O error on device dm-0, logical block 229391073
Buffer I/O error on device dm-0, logical block 229391074
Buffer I/O error on device dm-0, logical block 229391075
Buffer I/O error on device dm-0, logical block 229391076
Buffer I/O error on device dm-0, logical block 229391077
EXT4-fs warning (device dm-0): ext4_end_bio:250: I/O error writing to
inode 57281456 (offset 3145728 size 524288 starting block 229390950)
ata5: EH complete
JBD2: Detected IO errors while flushing file data on dm-0-8
--
Daniel J Blueman
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Next message: Xiao Guangrong: "Re: [PATCH 2/9] KVM: x86: simplify read_emulated"
Previous message: Masami Hiramatsu: "Re: [PATCH 07/19] ftrace/x86_32: Simplify parameter setup forftrace_regs_caller"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]