https://bugzilla.kernel.org/show_bug.cgi?id=219300 Theodore Tso (tytso@xxxxxxx) changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |tytso@xxxxxxx --- Comment #5 from Theodore Tso (tytso@xxxxxxx) --- Ext4 uses a block allocation algorithm which spreads the blocks used by files across the entire storage device in order to reduce file fragmentation. There are cheap thumb drives that claim to be, say, 16GB, but which only have 8GB of flash, and they rely on the fact that some Windows file systems (FAT and NTFS) allocates blocks starting at the low-numbered block numbers, and so if there is a fake/scammy USB thumb drive (the kind that you buy in the back alley of Shenzhen, or at a deap discount in the checkout line of Microcenter, or a really dodgy vendor on Amazon Marketplace at a price which is too good to be true), it might work on Windows so long as you don't actually try to store that many files on it. In any case, the console messages are very clearly I/O errors and the LBA sector number reported is a high-numbered address: 60278752. Whether this is just a failed thumbdrive, or one which is deliberately sold as a fake is unclear, but I would suggest trying to read and write to all of the sectors of the disk. Fundamentally, ext4 assumes that the storage device is valid; and if it is not valid (e.g., has I/O errors when you try to read or write to portions of the disk), that's the storage device's problem, not ext4. -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
