Date: Thu, 02 Aug 2018 00:15:19 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 230258] [FUSE] [BUG]: Attributes caching issue Message-ID: <bug-230258-227-VocKIeCY7A@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-230258-227@https.bugs.freebsd.org/bugzilla/> References: <bug-230258-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230258 --- Comment #1 from Conrad Meyer <cem@freebsd.org> --- FreeBSD's bufcache caches file contents by default. This can be worked around by having userspace open files with the O_DIRECT option, or by having your FUSE filesystem's FUSE_OPEN handler return FOPEN_DIRECT_IO in open_flags (i.e. set the 'direct_io' flag in fuse_file_info). Your test 'hello' filesystem does not appear set the direct_io flag on hello1 and hello2 (and of course 'echo >>' is unlikely to), so that may explain corrupt results. Given FreeBSD's local cache cannot possibly be consistent with your distributed filesystem (at least without sophisticated cache invalidation that FUSE probably lacks), you likely want to always operate in DIRECT mode. -- You are receiving this mail because: You are the assignee for the bug.
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