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=222007 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 duration 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 winding down. -- You are receiving this mail because: You are the assignee for the bug.
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