Date: Fri, 17 May 2019 06:14:11 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 237937] Removing path with mpr and geom_multipath causes kernel panic Message-ID: <bug-237937-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D237937 Bug ID: 237937 Summary: Removing path with mpr and geom_multipath causes kernel panic Product: Base System Version: CURRENT Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: pascal.guitierrez@gmail.com This issue occurs on both 12.0-RELEASE-p5 and 13-CURRENT r347415 (snap from 10th of May 2019). Reproducing is very easy: 1. Setup a bunch of multipath SAS disks using gmultipath (I am using 100 SAS disks with two 9300-8e SAS HBA's, but issue occurs even on 1x HBA) 2. Create a ZFS pool based on these (zpool create bench mirror multipath/.. ...) 3. Run some I/O on the pool: iozone -a 4. Physically pull one of the paths, wait, plug back in. Confirm that the p= ath is OPTIMAL via gmultipath. Then repeat with the other port. Eventually I/O will be frozen to the OS (there's a bunch of scsi ioc termin= ated and CAM status: CCB request completed with an error) and eventually the sys= tem will panic. This is 100% reproducible on my setup, can also provide SSH/IPMI access if needed. --=20 You are receiving this mail because: You are the assignee for the bug.=
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