usb hdd problems with 2.6.27.2

[Luciano Rocha]

Hello,

An external HDD, usb-encased, works fine under 2.6.26.5, but under
2.6.27.2 I get hundreds of errors per second, of 'No Sense [current]'.

On connection, under 2.6.26.5, I get the following:

[   84.503949] usb 1-2.1.1: new high speed USB device using ehci_hcd and address 8
[   84.696861] usb 1-2.1.1: configuration #1 chosen from 1 choice
[   84.740856] usbcore: registered new interface driver libusual
[   84.817625] Initializing USB Mass Storage driver...
[   84.817625] scsi2 : SCSI emulation for USB Mass Storage devices
[   84.818820] usbcore: registered new interface driver usb-storage
[   84.818823] USB Mass Storage support registered.
[   89.819567] scsi 2:0:0:0: Direct-Access     SAMSUNG  HD400LD          WQ10 PQ: 0 ANSI: 0
[   89.857627] Driver 'sd' needs updating - please use bus_type methods
[   89.857837] sd 2:0:0:0: [sda] 781422769 512-byte hardware sectors (400088 MB)
[   89.858754] sd 2:0:0:0: [sda] Write Protect is off
[   89.858754] sd 2:0:0:0: [sda] Assuming drive cache: write through
[   89.858869] sd 2:0:0:0: [sda] 781422769 512-byte hardware sectors (400088 MB)
[   89.858869] sd 2:0:0:0: [sda] Write Protect is off
[   89.858869] sd 2:0:0:0: [sda] Assuming drive cache: write through
[   89.858869]  sda: sda1
[   89.879851] sd 2:0:0:0: [sda] Attached SCSI disk
[   89.901630] sd 2:0:0:0: Attached scsi generic sg0 type 0
[   89.963632] sd 2:0:0:0: [sda] Sense Key : No Sense [current] 
[   89.963632] sd 2:0:0:0: [sda] Add. Sense: No additional sense information
[  106.913629] kjournald starting.  Commit interval 5 seconds
[  106.913629] EXT3 FS on dm-5, internal journal

On 2.6.27.2, I get:

[  551.484341] usb 1-2.1.1: new high speed USB device using ehci_hcd and address 8
[  551.677467] usb 1-2.1.1: configuration #1 chosen from 1 choice
[  551.718201] usbcore: registered new interface driver libusual
[  551.799287] Initializing USB Mass Storage driver...
[  551.800330] scsi2 : SCSI emulation for USB Mass Storage devices
[  551.800694] usbcore: registered new interface driver usb-storage
[  551.800698] USB Mass Storage support registered.
[  556.800702] scsi 2:0:0:0: Direct-Access     SAMSUNG  HD400LD          WQ10 PQ: 0 ANSI: 0
[  556.835190] Driver 'sd' needs updating - please use bus_type methods
[  556.835928] sd 2:0:0:0: [sda] 781422769 512-byte hardware sectors (400088 MB)
[  556.836809] sd 2:0:0:0: [sda] Write Protect is off
[  556.836816] sd 2:0:0:0: [sda] Assuming drive cache: write through
[  556.837548] sd 2:0:0:0: [sda] 781422769 512-byte hardware sectors (400088 MB)
[  556.838296] sd 2:0:0:0: [sda] Write Protect is off
[  556.838307] sd 2:0:0:0: [sda] Assuming drive cache: write through
[  556.838310]  sda: sda1
[  556.859169] sd 2:0:0:0: [sda] Attached SCSI disk
[  556.878553] sd 2:0:0:0: Attached scsi generic sg0 type 0
[  556.946044] sd 2:0:0:0: [sda] Sense Key : No Sense [current] 
[  556.946055] sd 2:0:0:0: [sda] Add. Sense: No additional sense information
[  556.947290] sd 2:0:0:0: [sda] Sense Key : No Sense [current] 
[  556.947298] sd 2:0:0:0: [sda] Add. Sense: No additional sense information
[  556.948539] sd 2:0:0:0: [sda] Sense Key : No Sense [current] 
[  556.948547] sd 2:0:0:0: [sda] Add. Sense: No additional sense information
[  556.949790] sd 2:0:0:0: [sda] Sense Key : No Sense [current] 
[  556.949798] sd 2:0:0:0: [sda] Add. Sense: No additional sense information
[  556.951045] sd 2:0:0:0: [sda] Sense Key : No Sense [current] 
[  556.951053] sd 2:0:0:0: [sda] Add. Sense: No additional sense information
[  556.952290] sd 2:0:0:0: [sda] Sense Key : No Sense [current] 
[  556.952297] sd 2:0:0:0: [sda] Add. Sense: No additional sense information
[  556.954665] sd 2:0:0:0: [sda] Sense Key : No Sense [current] 
[  556.954673] sd 2:0:0:0: [sda] Add. Sense: No additional sense information
[  556.957665] sd 2:0:0:0: [sda] Sense Key : No Sense [current] 
[  556.957673] sd 2:0:0:0: [sda] Add. Sense: No additional sense information
[  556.960791] sd 2:0:0:0: [sda] Sense Key : No Sense [current] 
[  556.960799] sd 2:0:0:0: [sda] Add. Sense: No additional sense information
[  556.963790] sd 2:0:0:0: [sda] Sense Key : No Sense [current] 
[  556.963798] sd 2:0:0:0: [sda] Add. Sense: No additional sense information
[  556.966915] sd 2:0:0:0: [sda] Sense Key : No Sense [current] 

These repeat forever, till I disconnect.

Regards,
Luciano Rocha

-- 
Luciano Rocha <luciano@xxxxxxxxxxx>
Eurotux Informática, S.A. <http://www.eurotux.com/>
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