Date: Tue, 29 May 2012 09:54:28 -0600 (MDT) From: Warren Block <wblock@wonkity.com> To: questions@freebsd.org Subject: Swap files and panics Message-ID: <alpine.BSF.2.00.1205290857560.61260@wonkity.com>
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Recently I rearranged partitions on an SSD. The swap partition was eliminated in favor of a swap file on /usr. This works, allows TRIM support on the swap space, and is easier to resize than a partition. However, sometimes the system panics on shutdown. It happens after "syncing disks", so the filesystems are fine, but it's disconcerting. I suspect but haven't yet managed to prove that it's only when swap is not empty. A race condition involving when the filesystems are unmounted? Or should there be some code in /etc/rc.d/addswap to run swapoff before shutdown? This is on a very recent 9-STABLE amd64, i5 2500K. rc.conf: swapfile="/usr/swap/swap"
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