On 08/30/2013 10:10 PM, The Figuras wrote: > Hello, Fellow Gluster Users > > I am testing writing file with 'dd' from FUSE client on Centos6 and > Centos5. Command syntax is i have used is: > > /bin/dd if=/dev/zero of=/data/gluster/file bs=20M count=1 oflag=direct > When I run it on Centos6 Client, I am receiving results as expected: > > 1+0 records in > 1+0 records out > 20971520 bytes (21 MB) copied, 0.125189 s, 168 MB/s > > However, when I run the same command on CentOS5.9 I cant create a file. > > /bin/dd: opening `/data/gluster/file': Invalid argument FUSE kernel module in CentOS 5 does lack support for O_DIRECT. By dropping the oflag=direct argument with CentOS 5, the write should go through. -Vijay