Date: Fri, 10 Jul 2009 22:01:04 +0200 From: Thomas Backman <serenity@exscape.org> To: Kip Macy <kmacy@freebsd.org> Cc: freebsd-fs@freebsd.org, FreeBSD current <freebsd-current@freebsd.org> Subject: Re: Reproducible ZFS panic, w/ script (Was: "New" ZFS crash on FS (pool?) unmount/export) Message-ID: <CE15C380-9EF3-4F27-9D4A-94BAED6490E6@exscape.org> In-Reply-To: <3c1674c90907101227ueab78eem6f8c5c7fdf0337cc@mail.gmail.com> References: <72163521-40BF-4764-8B74-5446A88DFBF8@exscape.org> <E085112F-B828-4514-B93C-419E7E7FD5FB@exscape.org> <45291598-D091-4E90-B968-22E59BEB3846@exscape.org> <3c1674c90907101227ueab78eem6f8c5c7fdf0337cc@mail.gmail.com>
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On Jul 10, 2009, at 21:27, Kip Macy wrote: > "zfs export" does a forced unmount. We may not be properly handling > dangling references. > > -Kip > > On Fri, Jul 10, 2009 at 12:25 PM, Thomas > Backman<serenity@exscape.org> wrote: >> On Jul 10, 2009, at 21:01, Thomas Backman wrote: >> ... Just one more thing to add for me today: the crash always happens when exporting the slave. Constant send/recv loops multiple times a second, no sweat. import/export of both pools multiple times a second, without any send/recv in between them, no sweat. Combined, however, it panics on "zpool export crashtestslave". (I verified this twice, once by changing stress() to simply run loads of incremental backups for a for a few minutes, break, and export the pools manually. Both times, the master pool was no problem, and it immediately panics on exporting the slave.) Regards, Thomas
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