[Bug 529489] Re: USB device changes automatically as read only

[Osmo Laitinen]

I managed to get that mp3 player's file system in bad shape by copying
and removing data from and to it and unplugging it during the process.
Not the same way it was, though.

It also breaks with 2.6.34-999-generic #201005051005

dmesg:

[  112.036017] usb 4-1: new full speed USB device using uhci_hcd and address 2
[  115.402367] Initializing USB Mass Storage driver...
[  115.403019] scsi2 : usb-storage 4-1:1.0
[  115.403443] usbcore: registered new interface driver usb-storage
[  115.403449] USB Mass Storage support registered.
[  116.404685] scsi 2:0:0:0: Direct-Access     TrekStor i.Beat cebrax FM 0100 PQ: 0 ANSI: 4
[  116.405486] sd 2:0:0:0: Attached scsi generic sg2 type 0
[  116.414376] sd 2:0:0:0: [sdb] 1001088 2048-byte logical blocks: (2.05 GB/1.90 GiB)
[  116.417728] sd 2:0:0:0: [sdb] Write Protect is off
[  116.417737] sd 2:0:0:0: [sdb] Mode Sense: 3e 00 00 00
[  116.417742] sd 2:0:0:0: [sdb] Assuming drive cache: write through
[  116.428650] sd 2:0:0:0: [sdb] 1001088 2048-byte logical blocks: (2.05 GB/1.90 GiB)
[  116.431645] sd 2:0:0:0: [sdb] Assuming drive cache: write through
[  116.431654]  sdb: sdb1
[  116.444688] sd 2:0:0:0: [sdb] 1001088 2048-byte logical blocks: (2.05 GB/1.90 GiB)
[  116.448190] sd 2:0:0:0: [sdb] Assuming drive cache: write through
[  116.448202] sd 2:0:0:0: [sdb] Attached SCSI removable disk
[  123.639221] FAT: Filesystem error (dev sdb1)
[  123.639228]     invalid access to FAT (entry 0x49d8e209)
[  123.639234]     File system has been set read-only

-- 
USB device changes automatically as read only
https://bugs.launchpad.net/bugs/529489
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