Hi!
when I save a file to a SMB share provided by a fritzbox, the file cannot be opened again by libfeoffice.

The same problem appears with writer and calc, with the version distributed by debian testing, as well as with the version that can be downloaded from libreoffice.com.

When copying a file from another drive to the cifs mounted location, it can be opened normally, until it is saved from libreoffice.
A corrupted file can however be unziped and ziped again, which makes it readable again by Libreoffice.

The line of the mount in /etc/fstab is:
//FRITZ-NAS/FRITZ.NAS /media/nas cifs users,credentials=/etc/samba/fb.auth,noserverino,gid=users,file_mode=0664,dir_mode=0775 0 0 #,vers=1.0 0 0

in /proc/mounts it appears as
//FRITZ-NAS/FRITZ.NAS /media/nas cifs rw,nosuid,nodev,noexec,relatime,vers=3.1.1,cache=strict,username=libiko,domain=WORKGROUP,uid=0,noforceuid,gid=100,forcegid,addr=192.168.0.1,file_mode=0664,dir_mode=0775,soft,nounix,mapposix,rsize=65536,wsize=65536,bsize=1048576,echo_interval=60,actimeo=1 0 0

No repro on 

Version: 7.0.2.2, Build ID: 8349ace3c3162073abd90d81fd06dcfb6b36b994
CPU threads: 8; OS: Linux 5.3; UI render: default; VCL: kf5
Locale: de-DE (de_DE.UTF-8); UI: de-DE, Calc: threaded

NAS (Fritzbox) operating system: Fritz!OS 7.20

I'm a littel bit concerned about cifs mount options "uid=0,noforceuid", which seems to be a resource for trouble, when username=libiko and which I'd assume *not* to have uid=0 (and on my working solution, this is definitely not the case and the mount is performed using my uid, and forceuid)

Hi Uwe,

I have added the mount options uid=1000,forceuid to the fstab-line but it didn't change anything. The line in /proc/mounts now reads:

//FRITZ-NAS/FRITZ.NAS /media/nas cifs rw,nosuid,nodev,relatime,vers=3.1.1,cache=strict,username=libiko,domain=WORKGROUP,uid=1000,forceuid,gid=100,forcegid,addr=fd00:0000:0000:0000:464e:6dff:fe34:0927,file_mode=0664,dir_mode=0775,soft,nounix,mapposix,rsize=65536,wsize=65536,bsize=1048576,echo_interval=60,actimeo=1 0 0

I tried with those versions of Libreoffice. I also tried both with LANG=C, but without any difference.
Version: 7.0.2.2
Build ID: 8349ace3c3162073abd90d81fd06dcfb6b36b994
CPU threads: 4; OS: Linux 5.8; UI render: default; VCL: gtk3
Locale: de-AT (de_AT.UTF-8); UI: en-US
Calc: threaded

Version: 7.0.2.2
Build ID: 00(Build:2)
CPU threads: 4; OS: Linux 5.8; UI render: default; VCL: gtk3
Locale: de-AT (de_AT.UTF-8); UI: de-DE
Debian package version: 1:7.0.2-1
Calc: threaded

FRITZ!OS: 07.20
Linux 5.8.0-2-amd64

Can you add your line from /proc/mounts, so that I can search for differences?
Quite possible that there is some problem with the mount, but I don't have troubles with other software.

BR Robert

Hello,

mounting the NAS with the option "cache=none" seems to solve the problem (workaround). See this bug report:
https://bugs.documentfoundation.org/show_bug.cgi?id=137230

*** This bug has been marked as a duplicate of bug 137230 ***

*** This bug has been marked as a duplicate of bug 137230 ***