Date: Fri, 1 Mar 2013 11:39:23 -0600 From: Chad M Stewart <cms@balius.com> To: freebsd-questions@freebsd.org Subject: hast, zfs, unable to flush disk cache Message-ID: <3367E416-493C-44EC-9259-89877EDF6DE8@balius.com>
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I've setup a 2 node cluster using HAST. I'd previously had this running = 9.0 and then rebuilt the nodes using 9.1. Under 9.0 I used = vfs.zfs.vdev.bio_flush_disable=3D1 but that setting does not appear to = work in 9.1. The other difference, previous build had root disk on UFS, = while this build has only ZFS based file systems. FreeBSD node1.san 9.1-RELEASE FreeBSD 9.1-RELEASE #0 r243826: Tue Dec 4 = 06:55:39 UTC 2012 = root@obrian.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC i386 Mar 1 17:07:25 node1 hastd[1446]: [disk5] (primary) Unable to flush = disk cache on activemap update: Operation not supported by device. Mar 1 17:07:28 node1 hastd[1440]: [disk3] (primary) Unable to flush = disk cache on activemap update: Operation not supported by device. Mar 1 17:07:28 node1 hastd[1437]: [disk2] (primary) Unable to flush = disk cache on activemap update: Operation not supported by device. Mar 1 17:07:28 node1 hastd[1434]: [disk1] (primary) Unable to flush = disk cache on activemap update: Operation not supported by device. Mar 1 17:07:28 node1 hastd[1446]: [disk5] (primary) Unable to flush = disk cache on activemap update: Operation not supported by device. Mar 1 17:07:28 node1 hastd[1443]: [disk4] (primary) Unable to flush = disk cache on activemap update: Operation not supported by device. I tried setting zfs set zfs:zfs_nocacheflush=3D1 <pool> but that diddn't = appear to work either. I get a lot of lines in my log file because of = this. I have also tried zfs set sync=3Ddisabled <pool> but HAST still = outputs those lines in the log file. Any suggestions? Thank you, Chad
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