On Saturday, November 05, 2011 11:22:04 PM shimi wrote: > > man 2 sync says: > BUGS > According to the standard specification (e.g., POSIX.1-2001), > sync() schedules the writes, > but may return before the actual writing is done. However, since > version 1.3.20 Linux does > actually wait. (This still does not guarantee data integrity: > modern disks have large > caches.) > > maybe that's your culprit?
I may have reading problems but... I understand: * According to the standard specification (e.g., POSIX.1-2001), sync() schedules the writes, but may return before the actual writing is done. =============== According to posix, "sync" means you ask to sync. It does not wait to the acutal data to be written to the disk. * However, since version 1.3.20 Linux does actually wait. ================= Hoever on linux it does. * (This still does not guarantee data integrity: modern disks have large caches.) ============== Using nand, cache is meaninless here, writing time is ... millisecs? And, again - I issued a umount, please remember that. (Amos - thanks, code will be fixed to use directly the system call). _______________________________________________ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
