developer@xxxxxxxxxxxx wrote: >>> ...Should I expect >>> any problems with this even on the old 2.4 kernel? >> >> I'd advise you to be using a 2.6 kernel at this point, too. >> > ... I assume 8 will still work on 2.4 though. IIRC, you need a reasonably modern 2.6 kernel (early 2005) if you want fsync() to flush the write caches on hard disks (IDE and SATA and SCSI included). The Linux SATA driver author explains here: http://hardware.slashdot.org/comments.pl?sid=149349&cid=12519114 Anyone know if those write barrier patches were ever backported into the 2.4 kernels? If not, I think you need to either use 2.6 or disable the disk's write caches and suffer the performance hits.