bad file permissions: write but no read access

bad file permissions: write but no read access

[Matthias Bodenbinder]

Hi,

I hundreds of files in my ecryptfs home which I can write (e.g. rename them) but I can not read them resp. open them. A chmod as
user or even as root is not working. 

Example:

34# file wencke-18te.xcf
wencke-18te.xcf: writable, regular file, no read permission

35# ll wencke-18te.xcf
.rw-r--r-- matthias matthias 41 MB Thu Aug  3 16:00:46 2017 wencke-18te.xcf

36# getfacl wencke-18te.xcf 
# file: wencke-18te.xcf
# owner: matthias
# group: matthias
user::rw-
group::r--
other::r--

37# chmod 644 wencke-18te.xcf
chmod: changing permissions of 'wencke-18te.xcf': Input/output error

The underlying ecryptfs directory /home/.ecryptfs/matthias/ with .Private and .ecryptfs subdirectories is readable without error.
I can rsync it to my backup server. But when I mount it from the backup server with ecryptfs-recover-private I have the same
issue.

What can I do to fix that and make the files readable again?

Matthias

Re: bad file permissions: write but no read access

[Matthias Bodenbinder]

I notice messages like this in the journal for each such file Itry to read:

kernel: Valid eCryptfs headers not found in file header region or xattr region, inode 105438

How can this be fixed? 

Matthias


Am Freitag, dem 01.10.2021 um 13:04 +0200 schrieb Matthias Bodenbinder:
> Hi,
> 
> I hundreds of files in my ecryptfs home which I can write (e.g. rename them) but I can not read them resp. open them. A chmod as
> user or even as root is not working. 
> 
> Example:
> 
> 34# file wencke-18te.xcf
> wencke-18te.xcf: writable, regular file, no read permission
> 
> 35# ll wencke-18te.xcf
> .rw-r--r-- matthias matthias 41 MB Thu Aug  3 16:00:46 2017 wencke-18te.xcf
> 
> 36# getfacl wencke-18te.xcf 
> # file: wencke-18te.xcf
> # owner: matthias
> # group: matthias
> user::rw-
> group::r--
> other::r--
> 
> 37# chmod 644 wencke-18te.xcf
> chmod: changing permissions of 'wencke-18te.xcf': Input/output error
> 
> The underlying ecryptfs directory /home/.ecryptfs/matthias/ with .Private and .ecryptfs subdirectories is readable without
> error.
> I can rsync it to my backup server. But when I mount it from the backup server with ecryptfs-recover-private I have the same
> issue.
> 
> What can I do to fix that and make the files readable again?
> 
> Matthias
>