svn commit: r344316 - head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs
shawn.webb at hardenedbsd.org
Tue Feb 19 23:44:15 UTC 2019
On Tue, Feb 19, 2019 at 11:35:56PM +0000, Pawel Jakub Dawidek wrote:
> Author: pjd
> Date: Tue Feb 19 23:35:55 2019
> New Revision: 344316
> URL: https://svnweb.freebsd.org/changeset/base/344316
> The way ZFS searches for its vdevs is the following: first it looks for
> a vdev that has the same name as the one stored in metadata and that has
> all VDEV labels in place. If it cannot find a GEOM provider with the given
> name and all VDEV labels it will scan all GEOM providers for the best match
> (the most VDEV labels available), but here the name is ignored.
> In case the ZFS pool is created, eg. using GPT partition label:
> # zpool create tank /dev/gpt/tank
> everything works, and on every import ZFS will pick /dev/gpt/tank and
> not /dev/da0p4.
> The problem occurs when da0p4 is extended and ZFS is unable to find all
> VDEV labels in /dev/gpt/tank anymore (the VDEV labels stored at the end
> of the partition are now somewhere else). In this case it will scan all
> GEOM providers and will pick the first one with the best match, ie. da0p4.
> Fix this problem by checking the VDEV/provider name even if we get the same
> match. If the name is the same as the one we have in pool's metadata, prefer
> this GEOM provider.
> Reported by: oshogbo, Michal Mroz <m.mroz at fudosecurity.com>
> Tested by: Michal Mroz <m.mroz at fudosecurity.com>
> Obtained from: Fudo Security
At the risk of painting a bikeshed a lovely color of neon purple, I'm
curious about if/how these types of commits get merged upstream to
(OpenZFS|Illumos|ZFS On Linux|where ever ZFS upstream is now|I'm very
confused|is anyone else confused where upstream is?).
Who is upstream? Is work like this going to remain as a downstream
patch to ZFS? Or is FreeBSD going to work to upstream this type of
I hope my curiousity doesn't offend anyone. ;)
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