Thanks for the info on how stability works with SCSI and ATA, but I think you lost the context of my question. You said earlier that fsync() and O_DIRECT are ways to deal with the problem of delayed write errors. I added that O_SYNC is another way. You then said that O_SYNC doesn't work completely correctly in some recent (but not current) kernels. You didn't say the same about fsync(). I'd like to know if you mean to say that O_SYNC has some problems in some kernels that fsync() does not have. And if it isn't too much trouble, it would be nice to hear details of how O_SYNC is partially correct in some kernels. - : send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html