Date: Mon, 2 Oct 2017 19:15:30 +0100 From: Steven Hartland <killing@multiplay.co.uk> To: freebsd-fs@freebsd.org Subject: Re: ZFS stalled after some mirror disks were lost Message-ID: <71d4416a-3454-df36-adae-34c0b70cd84e@multiplay.co.uk> In-Reply-To: <4A0E9EB8-57EA-4E76-9D7E-3E344B2037D2@gmail.com> References: <4A0E9EB8-57EA-4E76-9D7E-3E344B2037D2@gmail.com>
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What does zpool status report when you have disconnected the iscsi targets? On 02/10/2017 19:12, Ben RUBSON wrote: > Hi, > > On a FreeBSD 11 server, the following online/healthy zpool : > > home > mirror-0 > label/local1 > label/local2 > label/iscsi1 > label/iscsi2 > mirror-1 > label/local3 > label/local4 > label/iscsi3 > label/iscsi4 > cache > label/local5 > label/local6 > > A sustained read throughput of 180 MB/s, 45 MB/s on each iscsi disk > according to "zpool iostat", nothing on local disks (strange but I > noticed that IOs always prefer iscsi disks to local disks). > No write IOs. > > Let's disconnect all iSCSI disks : > iscsictl -Ra > > Expected behavior : > IO activity flawlessly continue on local disks. > > What happened : > All IOs stalled, server only answers to IOs are made to its zroot pool. > All commands related to the iSCSI disks (iscsictl), or to ZFS (zfs/zpool), > don't return. > > Questions : > Why this behavior ? > How to know what happens ? (/var/log/messages says almost nothing) > > I already disconnected the iSCSI disks without any issue in the past, > several times, but there were almost no IOs running. > > Thank you for your help ! > > Ben > > _______________________________________________ > freebsd-fs@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org"
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