Issue: When trying to access or remove a file I get the error "mv: cannot stat '<filename>: Input/Output error."
What does this mean?
Resolution: Generally this error means there is file system corruption. Try to rename, mv <filename> <new filename>, or list files to confirm that this error is occurring to all files in a particular directory. Once confirmed use the following steps to attempt to recover your filesystem. 1. First, if you are going to perform a filesystem check you need to ensure the filesystem is unmounted. If the file system is your root partition then you will need boot into rescue mode so you can check the filesystem while it is unmounted. See additional articles in the Knowledgebase regarding this. 2. To run a filesystem check, use the command e2fsck. For example, if you are getting the above error on a filesystem that is mounted on the partition /dev/hda4 run the following command: Quote: e2fsck /dev/hda4 3. If the above command returns with errors complaining about a "bad superblock" then run the following command: Quote: dumpe2fs /dev/hda4 Look for the Backup superblock in the output: Quote: Group 1: (Blocks 8193-16384) Backup superblock at 8193, Group descriptors at 8194-8194 Block bitmap at 8195 (+2), Inode bitmap at 8196 (+3) Inode table at 8197-8447 (+4) 7937 free blocks, 2008 free inodes, 0 directories 4. Now run e2fsck again, specifying the superblock number: Quote: e2fsck -b 8193 /dev/hda4 5. If this fails then reboot your system as a filesystem check will probably be forced. If you drop to a shell then run e2fsck on the partition that is reporting the errors.
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