On Dec 26, 2010, at 5:33 AM, Jackson Wang wrote: > Dear Richard, > Thanks for your reply. > > Actually there is NO any other disk/controlller fault in this system. An > engineer of NexentaStor, Andrew, just add a line in /kernel/drv/sd.conf of > "allow-bus-device-reset=0" of the NexentaStor system and then the resilver > speed get high. Before the parameter add-on, the system had resilver more > than 2 days and not complete yet. After the engineer add-on that line and > reboot the system, the reslver just spend about 10 hours to complete. Do you > know what happen about it? Thanks!!
This occurs when a device is misbehaving and not responding to commands. When a device does not respond to commands for more than 60 seconds, the sd driver will issue a bus reset, which affects other devices on the "bus." This can happen regardless of the I/O workload. The workaround disables the bus resets, as described in the sd man page. -- richard _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
