Date: Tue, 1 Apr 2014 09:35:10 -0600 From: Cassidy Larson <alandaluz@gmail.com> To: freebsd-stable@freebsd.org Subject: FS hang with suspfs Message-ID: <CAPjUTPNsG6aL2-jNEr=nDaezthhDd7Tnn%2Behr=Z1VFrnhJM6vQ@mail.gmail.com>
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I have a backend mail server that seems to hang randomly with suspfs states. Requires a power cycle because it never properly shuts down. Sometimes it happens during the day, others at night. Typically it will go for ~3 weeks before it does it again. Running FreeBSD 9.2-RELEASE-p1 (amd64) I have a LSI SAS2308 (mps driver) for 8 SAS drives in a ZFS raidz2 for mail data, and a LSI 9260-4i (mfi driver) with four SSDs (2xmirrored UFS for OS, 2x mirrored UFS for dovecot indexes). The dovecot processes get stuck in a suspfs state, and keep adding up, never being removed. Killing them does nothing, and even a reboot will end up hanging after syncing buffers but not finishing.. and the end course is a hard power cycle. I've seen this same suspfs lock-up on another 9.2-release box with four drives in a RAID-10 UFS using a 3ware 9750-4i (tws driver) before, although not as common as the one above. I read past posts and noticed an issue like this when creating a snapshot on a UFS+GJOURNAL setup, but I'm not doing any snapshots. The box today is just doing simple mailbox checking and mail delivery but for a large number of users. Anybody have any ideas or suggestions? I would be immensely grateful. Thanks, Cassidy
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