Tests that have been made with files over 6GB in a server with LVM partitions containing EXT3 and GFS2 filesystems (LVM partitions are distributed over a SAN and LOCAL DISK).
1) Copy from LOCAL DISK (EXT3) to LOCAL DISK (EXT3). Result: OK. 2) Copy from LOCAL DISK (EXT3) to LOCAL DISK (GFS2). Result: OK. 3) Copy from LOCAL DISK (EXT3) to SAN (EXT3). Result: OK. 4) Copy from LOCAL DISK (EXT3) to SAN (GFS2). Result: BAD (Always with large files). Then BAD qualification was done using both md5sum and sha1sum. If the SAN or QLOGIC firmware from the FC NIC is the problem then why with EXT3 filesystems errors never appears and all files are copied correctly?.
