debugfs is the tool I think, iirc. -- Russell Senior [email protected]
On Tue, Nov 18, 2025 at 12:30 PM Russell Senior <[email protected]> wrote: > > Hi, > > I have an ext4 filesystem on a LVM logical volume and while rsyncing > some files off the filesystem, I got some block I/O errors where the > block read failed, e.g.: > > [Tue Nov 18 11:44:53 2025] Buffer I/O error on dev dm-1, logical > block 74937497, async page read > > I did a ddrescue on the logical volume block device and so my syslogs > show this same block error about 10 times as it retried. > > So, my question is, how to figure out which file (if any) that block > belongs to. I recall doing this before, a while ago, but it was long > enough ago that I don't remember how. I can dredge it up again, but I > wonder if anyone has a favorite method off the top of your head? > > -- > Russell Senior > [email protected]
