Date: Sat, 02 Sep 2017 20:54:58 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 222007] Deadlock at shutdown time between zfs and usb when using usb stick as cache device Message-ID: <bug-222007-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D222007 Bug ID: 222007 Summary: Deadlock at shutdown time between zfs and usb when using usb stick as cache device Product: Base System Version: 10.3-STABLE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: bsdpr@phoe.frmug.org Situation: system is booting from a zfs pool configured with two usb sticks= as L2 cache devices. Observation: at shutdown time, after hard-disks are stoped and uptime durat= ion is printed, usual usb shutdown messages are not printed and the system never powers itself off. When the same sticks are pluged in the same host but are= not part of the root pool, the system goes to power off as usual. I suppose there is a deadlock between zfs and usb: zfs keeps references to those two devices and usb waits for the devices to be liberated before wind= ing down. --=20 You are receiving this mail because: You are the assignee for the bug.=
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