Other error rates that need to be looked at.
Posted Jul 8, 2006 17:51 UTC (Sat) by giraffedata
In reply to: Other error rates that need to be looked at.
Parent article: The 2006 Linux Filesystems Workshop (Part III)
Several times in the article and comments, I've seen the implication that FSCK corrects errors -- at least metadata errors -- in a filesystem. But FSCK as I understand it hardly does that at all. It corrects inconsistencies, and sometimes it corrects an inconsistency by replacing a lost and redundant piece of metadata.
But there isn't that much redundancy in e.g. ext2, is there? If a disk error or system crash causes a filesystem to lose a file's inode, FSCK "corrects" that error by deleting all the file's blocks too, right?
As a consistency restorer, there's nothing FSCK can do with file data -- from the filesystem perspective, the data is always consistent no matter how much it gets corrupted.
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