[Bug 510443] Re: external usb hard drive unmounts and remounts automatically

[lelamal]

I've just had one of these events, and this is what the System Log says
when it happened:

Apr 13 12:24:54 EGO kernel: [ 6581.016032] usb 1-4: reset high speed USB device using ehci_hcd and address 8
Apr 13 12:24:54 EGO kernel: [ 6581.148126] usb 1-4: device firmware changed
Apr 13 12:24:54 EGO kernel: [ 6581.148209] sd 3:0:0:0: [sdc] Unhandled error code
Apr 13 12:24:54 EGO kernel: [ 6581.148213] sd 3:0:0:0: [sdc] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK
Apr 13 12:24:54 EGO kernel: [ 6581.148313] sd 3:0:0:0: [sdc] Unhandled error code
Apr 13 12:24:54 EGO kernel: [ 6581.148316] sd 3:0:0:0: [sdc] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK
Apr 13 12:24:54 EGO kernel: [ 6581.148475] sd 3:0:0:0: [sdc] Unhandled error code
Apr 13 12:24:54 EGO kernel: [ 6581.148478] sd 3:0:0:0: [sdc] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK
Apr 13 12:24:54 EGO kernel: [ 6581.150660] usb 1-4: USB disconnect, address 8
Apr 13 12:24:54 EGO kernel: [ 6581.202462] JBD2: Detected IO errors while flushing file data on sdc1:8
Apr 13 12:24:54 EGO kernel: [ 6581.329042] usb 1-4: new high speed USB device using ehci_hcd and address 10
Apr 13 12:24:54 EGO kernel: [ 6581.462753] usb 1-4: configuration #1 chosen from 1 choice
Apr 13 12:24:54 EGO kernel: [ 6581.465131] scsi5 : SCSI emulation for USB Mass Storage devices
Apr 13 12:24:59 EGO kernel: [ 6586.479452] scsi 5:0:0:0: Direct-Access     ST336032 0AS                   PQ: 0 ANSI: 2 CCS
Apr 13 12:24:59 EGO kernel: [ 6586.480083] sd 5:0:0:0: Attached scsi generic sg3 type 0
Apr 13 12:24:59 EGO kernel: [ 6586.552303] sd 5:0:0:0: [sde] 703282608 512-byte logical blocks: (360 GB/335 GiB)
Apr 13 12:24:59 EGO kernel: [ 6586.553443] sd 5:0:0:0: [sde] Write Protect is off
Apr 13 12:24:59 EGO kernel: [ 6586.555047]  sde: sde1
Apr 13 12:24:59 EGO kernel: [ 6586.570930] sd 5:0:0:0: [sde] Attached SCSI disk
Apr 13 12:25:01 EGO kernel: [ 6588.008735] EXT4-fs (sde1): barriers enabled
Apr 13 12:25:04 EGO kernel: [ 6591.195393] kjournald2 starting: pid 5619, dev sde1:8, commit interval 5 seconds
Apr 13 12:25:04 EGO kernel: [ 6591.195487] EXT4-fs (sde1): warning: mounting fs with errors, running e2fsck is recommended
Apr 13 12:25:04 EGO kernel: [ 6591.199964] EXT4-fs (sde1): internal journal on sde1:8
Apr 13 12:25:04 EGO kernel: [ 6591.199971] EXT4-fs (sde1): delayed allocation enabled
Apr 13 12:25:04 EGO kernel: [ 6591.199975] EXT4-fs: file extents enabled
Apr 13 12:25:04 EGO kernel: [ 6591.200758] EXT4-fs: mballoc enabled
Apr 13 12:25:04 EGO kernel: [ 6591.200783] EXT4-fs (sde1): recovery complete
Apr 13 12:25:04 EGO kernel: [ 6591.202730] EXT4-fs (sde1): mounted filesystem with ordered data mode

Does anybody know if any of this is useful at all? I can provide any
other detail on request. Many thanks.

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external usb hard drive unmounts and remounts automatically
https://bugs.launchpad.net/bugs/510443
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