Date: Tue, 13 Jun 2017 23:56:07 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 219972] Unable to zpool export following some zfs recv Message-ID: <bug-219972-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=219972 Bug ID: 219972 Summary: Unable to zpool export following some zfs recv Product: Base System Version: 11.0-RELEASE Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: pfribeiro@gmail.com root@sunflower:~ # uname -a FreeBSD sunflower 11.0-RELEASE-p9 FreeBSD 11.0-RELEASE-p9 #0: Tue Apr 11 08:48:40 UTC 2017 root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64 I must admit this is quite some odd behaviour I'm getting regarding zfs pools. I'm trying to synchronize snapshots from another FreeBSD system (FreeNAS in fact) to a pure FreeBSD 11-RELEASE-p9 system, with a USB 3.0-attached Seagate 8TB drive. Quite often, I'm unable to do 'zpool export master' after a 'zpool import master'. This seems to happen more consistently after having done a 'zfs recv'. Something alone the lines of: root@sunflower:~ # zpool import master root@sunflower:~ # zpool export master root@sunflower:~ # zpool import master root@sunflower:~ # zpool export master root@sunflower:~ # zpool import master root@sunflower:~ # zpool export master cannot export 'master': pool is busy root@sunflower:~ # zpool export master cannot export 'master': pool is busy I note that there are no processes using the pool. I have also tried using 'zpool import -N master', but the result is often the same. I have also tried 'zpool export -f master' but to no avail. I don't see any erroneous messages in dmesg, neither in /var/log/messages. I initially was using geli with an AES encrypted device being used to create the zfs pool, but I have since then tested without crypto, and the problem persists. Following this behaviour I am then unable to export the pool till I reboot the system. I have opened a GitHub issue with the original guide I followed at: https://github.com/hughobrien/zfs-remote-mirror/issues/7, and subsequently posted on the FreeBSD forum: https://forums.freebsd.org/threads/61291/. But quite frankly, I am almost giving up on this storage idea, because I cannot get to the bottom of this issue. There are no obvious logged errors that I can poke at. I would appreciate some guidance to confirm this erroneous behaviour further. I see that there are some vaguely related bugs like #201735, but in my case I am not accessing any particular folder or file at all. Thanks -- You are receiving this mail because: You are the assignee for the bug.
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