Re: Permissions for root user

2015-03-26 Thread sfjro
"Christoph Pleger": > I am using a user-space NFS-Server, unfs3. This is because the server runs > in a semi-virtualized machine where nfs kernel server does not work. Then I'd ask you to try kernel-space NFS server and compare the result. Can't you try kernel-space NFS server temporary on the lo

Re: Permissions for root user

2015-03-26 Thread Christoph Pleger
Hello, > I will try by myself in a few days, but I'd ask you to identify the > systemcall which returned the error. open(2) or other? Please try > # strace -o /tmp/s touch file > and post /tmp/s. I attached the resulting file. > And is your NFS server Debian's 3.16.7-ckt7-1 too? I am usin

Re: Permissions for root user

2015-03-26 Thread sfjro
"Christoph Pleger": > That is, after writing something to an already existing file, the > 'Operation not supported' problem suddenly disappears. I guess it is due to the dir hierarchy is already copied-up. I will try by myself in a few days, but I'd ask you to identify the systemcall which retur

Re: Permissions for root user

2015-03-26 Thread Christoph Pleger
Hello, >> What I do not understand here, is why the NFS server does not allow the operation, though it does if the directory is exported read-write (I tested that). > > Exported with rw,no_root_squash? And root user on NFS client could not create a file? Hmm, that is strange. I will check in a few