XFS restored to lost and found

Hi all,

So I've managed to corrupt an XFS files system running on software RAID. How exactly I'm not sure....it may have been when using CentOS rescue when trying to get the system to boot.

Using xfs_repair with various options I've managed to get the FS to a state where it'll mount but there are no directories only inode numbers in the lost and found directory.

Is there any way to remap these back to directories?

Any ideas how I may have gotten into this mess?

Quoted 15 lines · Dave Chinner

Quoted 9 lines · Nick Hollingsworth

Hi all,

So I've managed to corrupt an XFS files system running on software RAID. How exactly I'm not sure....it may have been when using CentOS rescue when trying to get the system to boot.

Using xfs_repair with various options I've managed to get the FS to a state where it'll mount but there are no directories only inode numbers in the lost and found directory.

Sounds like the root directory got corrupted/overwritten by something and so the entire directory heirarchy got moved into lost+found. The inode numbers are used because the names are held in the directory blocks and they couldn't be found.

Quoted 5 lines

Quoted 1 line

Is there any way to remap these back to directories?

You'll need to examine the contents of every directory and file in lost+found to work out where they cames from. if you are lucky, it'll only be the root directory entries that are in lost_found and the rest of the directories heirarchy will still be intact....

I examined a few of the directories and could find some intact sub directories & files. Is this now a matter of manually recreating the original directories and moving lost+found pieces back into it as best I can or is there a more sophisticated way to put it back together?