Date: Thu, 09 Apr 2026 01:10:40 +0000 From: bugzilla-noreply@freebsd.org To: testing@FreeBSD.org Subject: [Bug 258766] Flaky test cases: sys.aio.aio_test.vectored_unaligned and sys.aio.aio_test.vectored_zvol_poll Message-ID: <bug-258766-32464-k05S3va0IW@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-258766-32464@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=258766 --- Comment #4 from commit-hook@FreeBSD.org --- A commit in branch main references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=36d971464ac21f6531cb9eaa377f4e1dd915a2ad commit 36d971464ac21f6531cb9eaa377f4e1dd915a2ad Author: Mark Johnston <markj@FreeBSD.org> AuthorDate: 2026-04-09 01:08:45 +0000 Commit: Mark Johnston <markj@FreeBSD.org> CommitDate: 2026-04-09 01:10:13 +0000 geom: Make g_waitidle() wait for orphaned providers This is motivated by the following race in the ZFS zvol code. When a zvol is created, we create a GEOM-backed zvol, which results in a /dev/zvol/<zvol path> device file, created by GEOM::dev. If volmode=dev is specified, zvol_set_volmode_impl() will wither the GEOM, then create a device file with the same name. This sometimes fails because g_wither_geom() is asynchronous, so we end up trying to create a device file while the old one still exists. I want to fix this by adding a g_waitidle() call to zvol_os_remove_minor(). g_waitidle() is not sufficient: GEOM::dev does not destroy the device until g_dev_orphan() is called. (In fact the device destruction is asynchronous too, but the delist_dev() call is sufficient to address this race.) So, I propose modifying g_waitidle() to block until orphaned providers are processed. PR: 258766 Reviewed by: mav, imp, kib MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D55049 sys/geom/geom_event.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- You are receiving this mail because: You are the assignee for the bug.home | help
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