https://bugs.kde.org/show_bug.cgi?id=485359
Bug ID: 485359
Summary: Krusader reports Error 95 when copying non-zero size
files on ZFS filesystems
Classification: Applications
Product: krusader
Version: 2.7.2
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: krusader-bugs-n...@kde.org
Reporter: tqnfqx+5lzoycgfsu...@sharklasers.com
CC: krusader-bugs-n...@kde.org
Target Milestone: ---
SUMMARY
Krusader reports Error 95 when copying non-zero size files on ZFS filesystems.
STEPS TO REPRODUCE
1. Navigate to a ZFS directory
2. Ctrl-C to copy a non-zero size file
3. Ctrl-V to paste in another location in the ZFS filesystem
OBSERVED RESULT
A popup reports the following: Cannot copy file from /drive/test/file.txt to
/drive/file.txt. (Errno: 95)
File is not copied.
EXPECTED RESULT
File is copied to chosen directory without error.
SOFTWARE/OS VERSIONS
Linux: Pop! OS 22.04
Kernel: 6.8.0-76060800daily20240311-generic
ZFS module version: 2.2.3-1pop1~1711451927~22.04~5612640
KDE Frameworks Version: 5.92.0
Qt Version: 5.15.3 (built against 5.15.3)
ADDITIONAL INFORMATION
Krusader has always worked on my ZFS filesystems previously. Kernel before
reinstall was 6.6.10-76060610-generic. I don't know the ZFS version
unfortunately, likely whatever was current for that kernel on April 1st when I
reinstalled.
This began after I did a fresh reinstall of my OS. Other file managers and
commands such as mv and rsync work without issue.
I am not a developer so I opened a thread here:
https://discuss.kde.org/t/error-95-in-krusader-after-reinstalling-os/13647
Here is the reply I received:
Error number 95 is “operation not supported” - ENOTSUP (see errno -l | grep
95), which - from looking at some bug reports, for example this, is likely
caused by the use of the copy_file_range() function that is not support by some
kernels for ZFS (apparently both very old and very new).
He links to this issue for OpenZFS: https://github.com/openzfs/zfs/issues/15930
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