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1  Linux Stuff / General Linux questions / Guruplug USB harddisk, journal i/o errors on: January 14, 2011, 07:30:49 AM
Recently I bought a Freecom XXS (500 GB) external USB disk to attach to the Guruplug Server Plus. Let me first say I am sure the disk works perfect on my laptop (formatted it, can copy files to/from it).

But when I have mounted the USB disk (tried both USB ports on the Guruplug) and start copying files from the Guruplug to the external USB disk I get random I/O errors and the disk gets disconnected:

First it can transfer some files, but soon I get the message the USB harddisk file system has become 'read only':

Quote
cp: cannot create regular file `./erode_comparison.png': Read-only file system
cp: cannot create regular file `./face.gif': Read-only file system
cp: cannot create regular file `./fietsroute.jpg': Read-only file system
cp: cannot create regular file `./film.jpg': Read-only file system
cp: cannot create regular file `./fonzie.jpg': Read-only file system

And the kernel says:
Quote
[442511.593520] kjournald starting.  Commit interval 5 seconds
[442511.600446] EXT3 FS on sdc1, internal journal
[442538.556684] Aborting journal on device sdc1.
[442538.561108] journal commit I/O error
[442538.568669] EXT3-fs error (device sdc1): ext3_journal_start_sb: Detected aborted journal

But within a few seconds the kernel reassigns a new block device. Plugging it in for the first time the block device might be /dev/sdc1, but when the journal I/O errors appear it disconnects
and reconnects and appears under a new block device name, for example /dev/sdd1. Then I remount under the new name, but soon I get the same errors again and it disconnects/reconnects
again and choses /dev/sde1. This keeps incrementing.

I am running Debian with kernel 2.6.32-5-kirkwood  and when I plugin the USB harddisk the first time I get:

Quote
[436171.601709] usb 1-1.3: new high speed USB device using orion-ehci and address 4
[436171.712299] usb 1-1.3: New USB device found, idVendor=07ab, idProduct=fc88
[436171.719299] usb 1-1.3: New USB device strings: Mfr=3, Product=11, SerialNumber=5
[436171.726835] usb 1-1.3: Product: Freecom Mobile Drive XXS
[436171.732293] usb 1-1.3: Manufacturer: Freecom
[436171.736667] usb 1-1.3: SerialNumber: C2272F141A0C
[436171.743057] usb 1-1.3: configuration #1 chosen from 1 choice
[436171.749781] scsi1 : SCSI emulation for USB Mass Storage devices
[436171.757170] usb-storage: device found at 4
[436171.757180] usb-storage: waiting for device to settle before scanning
[436176.751708] usb-storage: device scan complete
[436176.793873] scsi 1:0:0:0: Direct-Access     Freecom  Mobile Drive XXS      PQ: 0 ANSI: 2 CCS
[436176.807089] sd 1:0:0:0: [sdc] 976773168 512-byte logical blocks: (500 GB/465 GiB)
[436176.819451] sd 1:0:0:0: [sdc] Write Protect is off
[436176.824405] sd 1:0:0:0: [sdc] Mode Sense: 28 00 00 00
[436176.824416] sd 1:0:0:0: [sdc] Assuming drive cache: write through
[436176.832310] sd 1:0:0:0: [sdc] Assuming drive cache: write through
[436176.838524]  sdc: sdc1
[436176.872066] sd 1:0:0:0: [sdc] Assuming drive cache: write through
[436176.878278] sd 1:0:0:0: [sdc] Attached SCSI disk

I mount the external harddisk as follows:

Quote
mount -o rw -t ext3 /dev/sdc1 /media/freecom500gb/

The journal I/O errors appear random, I can copy a few files, but soon it will result in the filesystem becoming read only and giving journal I/O errors. I read on the internet there might be issues with the USB being too fast to handle by the current kernels? Is there anyone out there who is also using an external USB harddisk which is working without any problems? Or does anyone have an idea what is going on?

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