Date: Mon, 2 Oct 2017 20:28:52 +0200 From: Ben RUBSON <ben.rubson@gmail.com> To: Freebsd fs <freebsd-fs@freebsd.org> Subject: Re: ZFS stalled after some mirror disks were lost Message-ID: <953DD379-C03A-4737-BAD8-14BB2DB4AB05@gmail.com> In-Reply-To: <8A189756-028A-465E-9962-D0181FAEBB79@gmail.com> References: <4A0E9EB8-57EA-4E76-9D7E-3E344B2037D2@gmail.com> <71d4416a-3454-df36-adae-34c0b70cd84e@multiplay.co.uk> <8A189756-028A-465E-9962-D0181FAEBB79@gmail.com>
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Before disconnecting the targets the pool was online without any issue. > On 02 Oct 2017, at 20:17, Ben RUBSON <ben.rubson@gmail.com> wrote: > > Unfortunately the command stalls / does not return :/ > >> On 02 Oct 2017, at 20:15, Steven Hartland <killing@multiplay.co.uk> wrote: >> >> 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" >> >> _______________________________________________ >> 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" >help
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