Date: Thu, 17 Jun 2021 18:39:33 GMT From: Alan Somers <asomers@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: ee3a7246c65c - stable/13 - gmultipath: make physpath distinct from the underlying providers' Message-ID: <202106171839.15HIdXUk003480@gitrepo.freebsd.org>
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The branch stable/13 has been updated by asomers: URL: https://cgit.FreeBSD.org/src/commit/?id=ee3a7246c65ceb2fdcfcf8d337dbdeaa315a332d commit ee3a7246c65ceb2fdcfcf8d337dbdeaa315a332d Author: Alan Somers <asomers@FreeBSD.org> AuthorDate: 2021-04-22 21:09:03 +0000 Commit: Alan Somers <asomers@FreeBSD.org> CommitDate: 2021-06-17 18:39:14 +0000 gmultipath: make physpath distinct from the underlying providers' zfsd uses a device's physical path attribute to automatically replace a missing ZFS disk when a blank disk is inserted into the same physical slot. Currently gmultipath passes through its underlying providers' physical path attribute. That may cause zfsd to replace a missing gmultipath provider with a newly arrived, single-path disk. That would be bad. This commit fixes that problem by simply appending "/mp" to the underlying providers' physical path, in a manner similar to what geli already does. Sponsored by: Axcient Differential Revision: https://reviews.freebsd.org/D29941 (cherry picked from commit 420dbe763f15b076751443edfeeb4f676deb3c44) --- sys/geom/multipath/g_multipath.c | 6 ++++++ tests/sys/geom/class/multipath/misc.sh | 4 ++-- 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/sys/geom/multipath/g_multipath.c b/sys/geom/multipath/g_multipath.c index 5972b63e680a..120fced0a8f1 100644 --- a/sys/geom/multipath/g_multipath.c +++ b/sys/geom/multipath/g_multipath.c @@ -394,6 +394,12 @@ g_multipath_done(struct bio *bp) mtx_unlock(&sc->sc_mtx); } else mtx_unlock(&sc->sc_mtx); + if (bp->bio_error == 0 && + bp->bio_cmd == BIO_GETATTR && + !strcmp(bp->bio_attribute, "GEOM::physpath")) + { + strlcat(bp->bio_data, "/mp", bp->bio_length); + } g_std_done(bp); } } diff --git a/tests/sys/geom/class/multipath/misc.sh b/tests/sys/geom/class/multipath/misc.sh index 583434e1cfa5..4da8462588ca 100755 --- a/tests/sys/geom/class/multipath/misc.sh +++ b/tests/sys/geom/class/multipath/misc.sh @@ -198,7 +198,7 @@ fail_on_error_cleanup() atf_test_case physpath cleanup physpath_head() { - atf_set "descr" "gmultipath should pass through the underlying providers' physical path" + atf_set "descr" "gmultipath should append /mp to the underlying providers' physical path" atf_set "require.user" "root" } physpath_body() @@ -217,7 +217,7 @@ physpath_body() atf_check gnop create -z $physpath /dev/${md1} atf_check -s exit:0 gmultipath create "$name" ${md0}.nop ${md1}.nop gmultipath_physpath=$(diskinfo -p multipath/"$name") - atf_check_equal "$physpath" "$gmultipath_physpath" + atf_check_equal "$physpath/mp" "$gmultipath_physpath" } physpath_cleanup() {
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