Date: Fri, 10 Mar 2017 12:39:41 +0200 From: Konstantin Belousov <kostikbel@gmail.com> To: Rick Macklem <rmacklem@uoguelph.ca> Cc: Harry Schmalzbauer <freebsd@omnilan.de>, Mark Johnston <markj@freebsd.org>, FreeBSD Stable <freebsd-stable@freebsd.org> Subject: Re: unionfs bugs, a partial patch and some comments [Was: Re: 1-BETA3 Panic: __lockmgr_args: downgrade a recursed lockmgr nfs @ /usr/local/share/deploy-tools/RELENG_11/src/sys/fs/unionfs/union_vnops.c:1905] Message-ID: <20170310103941.GG16105@kib.kiev.ua> In-Reply-To: <YTXPR01MB018968FA84D52A90C5CD164FDD210@YTXPR01MB0189.CANPRD01.PROD.OUTLOOK.COM> References: <YTXPR01MB018919BE87B12E458144E218DD140@YTXPR01MB0189.CANPRD01.PROD.OUTLOOK.COM> <57B8793E.4070004@omnilan.de> <YTXPR01MB018948D19A0A9BB5FAC3D5BADDE60@YTXPR01MB0189.CANPRD01.PROD.OUTLOOK.COM> <58BEAAAC.4090303@omnilan.de> <58BEFF83.9010906@omnilan.de> <58BF0DE4.1020300@omnilan.de> <YTXPR01MB018942141AF93DE6F96FE689DD2F0@YTXPR01MB0189.CANPRD01.PROD.OUTLOOK.COM> <20170307235550.GP30979@kib.kiev.ua> <58BFC5EB.8020905@omnilan.de> <YTXPR01MB018968FA84D52A90C5CD164FDD210@YTXPR01MB0189.CANPRD01.PROD.OUTLOOK.COM>
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On Thu, Mar 09, 2017 at 10:49:01PM +0000, Rick Macklem wrote: > Konstantin Belousov wrote: > > I did not touched unionfs, and have no plans to. It is equally broken in > > all relevant versions of FreeBSD. > Heh, heh. I chuckled when I read this. I think he's trying to say > "it probably won't ever be fixed". My understanding is that it would > require a major redesign of the FreeBSD VFS to make it fully stackable > to fix unionfs and that isn't happening anytime soon... > I mean that there is nobody who is both interested in unionfs and capable of fixing it, and it was so at least from the 8.x times. Also, I do not think that VFS needs a redesign to support unionfs-like operations. The problems that current unionfs has are its local problems.
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