Date: Mon, 12 Oct 2020 10:27:17 -0500 From: Eric van Gyzen <eric@vangyzen.net> To: freebsd-current@freebsd.org Subject: Re: ZFS crash -- zvol_geom_bio_getattr called when volmode=dev Message-ID: <9a140b74-de79-60d5-f5c8-b2a2676dbbea@vangyzen.net> In-Reply-To: <74ba295a-1f67-5109-0a21-9662eac0334b@vangyzen.net> References: <1dfaf797-f23b-af97-d2d3-efa0f5bb88d9@vangyzen.net> <95636bbf-2367-f226-f462-d5581581c18f@vangyzen.net> <CAOtMX2hMKFnMdDWP3Boeqmjh3oRWKraoRCcKCdW4y0UWK8RVfA@mail.gmail.com> <b3883e51-aea1-7f65-d1e5-279474c6ffea@FreeBSD.org> <74ba295a-1f67-5109-0a21-9662eac0334b@vangyzen.net>
next in thread | previous in thread | raw e-mail | index | archive | help
On 10/9/20 7:54 PM, Eric van Gyzen wrote: > On 10/9/20 6:27 PM, Ryan Moeller wrote: >> >> On 10/9/20 6:22 PM, Alan Somers wrote: >>> This sounds like it might be a regression introduced by the OpenZFS >>> merge. >>> Have you compared vdev_geom.c in OpenZFS vs the old version? >>> -Alan >> >> >> I don't think vdev_geom.c is involved, we're taking a wrong path in >> zvol_os.c because >> it seems the volume is created using the default volmode and later >> changed to volmode=dev. > > Yes, you're on the right track. I tried this several times on a VM and > it eventually hit the window: > > # zfs create -s -V 20G -o primarycache=none -o volmode=dev > head_root/testvol > zvol_create_minor_impl:1250[1]: Creating ZVOL head_root/testvol... > zvol_create_minor_impl:1371[1]: ZVOL head_root/testvol created. > > > Fatal trap 12: page fault while in kernel mode Let's track this in https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=250297 Eric
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?9a140b74-de79-60d5-f5c8-b2a2676dbbea>