Hello all, Recently when I'm investigating the xfstests generic/213 generic/228 failures for cifs. Found that fallocate can't change the cifs disk space usage. Comparing xfs fileystem, fallocate can update space usage. My tests is in 5.8.0-rc7+. I also file a bug for this issue. https://bugzilla.kernel.org/show_bug.cgi?id=208775 # cat /etc/samba/smb.conf [cifs] path=/mnt/cifs writeable=yes # mount //localhost/cifs cifs -o user=root,password=redhat,cache=none,actimeo=0 # df -h cifs Filesystem Size Used Avail Use% Mounted on //localhost/cifs 36G 23G 13G 66% /root/cifs # fallocate -o 0 -l 2g /root/cifs/file1 # df -h cifs Filesystem Size Used Avail Use% Mounted on //localhost/cifs 36G 23G 13G 66% /root/cifs ]# ls -l cifs total 1 -rwxr-xr-x. 1 root root 2147483648 Aug 2 21:57 file1 Thanks. -- Best regards! XiaoLi Feng 冯小丽
