Are the "disk active" lights typically ON when this happens?
On Tue, Jul 26, 2011 at 3:27 PM, Garrett D'Amore <garr...@damore.org> wrote: > This is actually a recently known problem, and a fix for it is in the > 3.1 version, which should be available any minute now, if it isn't > already available. > > The problem has to do with some allocations which are sleeping, and jobs > in the ZFS subsystem get backed behind some other work. > > If you have adequate system memory, you are less likely to see this > problem, I think. > > - Garrett > > > On Tue, 2011-07-26 at 08:29 -0700, Rocky Shek wrote: >> Ian, >> >> Did you enable DeDup? >> >> Rocky >> >> >> -----Original Message----- >> From: zfs-discuss-boun...@opensolaris.org >> [mailto:zfs-discuss-boun...@opensolaris.org] On Behalf Of Ian D >> Sent: Tuesday, July 26, 2011 7:52 AM >> To: zfs-discuss@opensolaris.org >> Subject: [zfs-discuss] Entire client hangs every few seconds >> >> Hi all- >> We've been experiencing a very strange problem for two days now. >> >> We have three client (Linux boxes) connected to a ZFS box (Nexenta) via >> iSCSI. Every few seconds (seems random), iostats shows the clients go from >> an normal 80K+ IOPS to zero. It lasts up to a few seconds and things are >> fine again. When that happens, I/Os on the local disks stops too, even the >> totally unrelated ones. How can that be? All three clients show the same >> pattern and everything was fine prior to Sunday. Nothing has changed on >> neither the clients or the server. The ZFS box is not even close to be >> saturated, nor the network. >> >> We don't even know where to start... any advices? >> Ian > > > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss > _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
