3ccab25205
The nreserved column in the txgs kstat file always contains 0 following the write throttle restructuring of commit e8b96c6007bf97cdf34869c1ffbd0ce753873a3d. Prior to that commit, the nreserved column showed the number of bytes temporarily reserved in the pool by a transaction group at sync time. The new write throttle did away with temporary reservations and uses the amount of dirty data instead. To approximate the old output of the txgs kstat, the number of dirty bytes per-txg was passed in as the nreserved value to spa_txg_history_set_io(). This approach did not work as intended, because the per-txg dirty value is decremented as data is written out to disk, so it is zero by the time we call spa_txg_history_set_io(). To fix this, save the number of dirty bytes before calling spa_sync(), and pass this value in to spa_txg_history_set_io(). Also, since the name "nreserved" is now a misnomer, the column heading is now labeled "ndirty". Signed-off-by: Ned Bass <bass6@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue #1696
Native ZFS for Linux!
ZFS is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the Illumos community.
ZFS on Linux, which is also known as ZoL, is currently feature complete. It includes fully functional and stable SPA, DMU, ZVOL, and ZPL layers.
Full documentation for installing ZoL on your favorite Linux distribution can be found at: http://zfsonlinux.org