After typing the 'sync' command all reiserfs 3.6 mounted volumes will be continuously written. For example, suppose 'sdb1' contains a reiserfs partition. mount /dev/sdb1 /mnt/data Now type: cat /sys/block/sdb/stat and note the number of I/O's to the partition. wait a couple seconds, look at I/O statistics and see they don't change. Now type: sync Subsequently typing 'cat /sys/block/sdb/stat' every few seconds shows increasing I/O. This can be confirmed by trying to spin the drive down: hdparm -y /dev/sdb The device spins down but then immediately spins back up due to above I/O taking place. If you umount the drive and mount again, the continuous I/O stops, only to resume again as soon as you type 'sync'. This behavior started with 3.5 kernel. All 3.4.x kernels are ok. All 3.5.x and newer kernels exhibit this behavior. This does not seem to occur with ext3 or FAT. -- To unsubscribe from this list: send the line "unsubscribe reiserfs-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
