Date: Thu, 18 Dec 2014 18:04:13 +0100 From: "Nagy, Attila" <bra@fsn.hu> To: FreeBSD Stable <freebsd-stable@freebsd.org> Subject: geom_multipath and zfs doesn't work Message-ID: <5493090D.2030406@fsn.hu>
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Hi, Running stable/10@r273159 on FC disks (through isp) I can't create a zfs pool. What I have is a simple device, accessible on /dev/multipath/sas0, backed by da0 and da4: # gmultipath status Name Status Components multipath/sas0 OPTIMAL da0 (ACTIVE) da4 (READ) When I issue a zpool create data /dev/multipath/sas0 command, zpool starts to eat 100% CPU: # procstat -k 3924 PID TID COMM TDNAME KSTACK 3924 100128 zpool - <running> gstat shows that there is one uncompleted read IO on multipath/sas0 and the queue length constantly grows on da0: # gstat -b dT: 1.030s w: 1.000s L(q) ops/s r/s kBps ms/r w/s kBps ms/w %busy Name 124402 146 0 0 0.0 0 0 0.0 100.5 da0 0 0 0 0 0.0 0 0 0.0 0.0 da1 0 0 0 0 0.0 0 0 0.0 0.0 da2 0 0 0 0 0.0 0 0 0.0 0.0 da3 1 0 0 0 0.0 0 0 0.0 0.0 multipath/sas0 0 0 0 0 0.0 0 0 0.0 0.0 da4 0 0 0 0 0.0 0 0 0.0 0.0 da5 0 0 0 0 0.0 0 0 0.0 0.0 da6 0 0 0 0 0.0 0 0 0.0 0.0 da7 0 0 0 0 0.0 0 0 0.0 0.0 da8 0 0 0 0 0.0 0 0 0.0 0.0 da9 0 0 0 0 0.0 0 0 0.0 0.0 multipath/sas1 0 0 0 0 0.0 0 0 0.0 0.0 multipath/sata0 0 0 0 0 0.0 0 0 0.0 0.0 multipath/sata1 0 0 0 0 0.0 0 0 0.0 0.0 md0 0 0 0 0 0.0 0 0 0.0 0.0 md1 I can use these devices finely with dd. What's going on here?
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