Hi,
my underlying block device lost a few blocks due to media errors, but
the blocks involved are not permanently bad, so the badblocks mechanism
isn't entirely the correct tool here.
Is there a good flow to recover from *past* media errors and get a list
of affected files?
Use cases:
- Harddisk reports read errors, but remaps blocks on write
- Volume manager reports read errors because all mirrors were lost,
but spares exist
- ddrescue copied media, with a list of blocks that could not be copied
Basically, what I'd like to do is go from a damaged file system and a
list of damaged blocks to a good file system and a list of damaged files
(which allows me to check if I can restore them from backup, or, if they
came from a package, simply reinstall them).
Could there be something like a file attribute "damaged" that is set by
fsck, and that I can scan for inside a mounted file system?
Simon
