Date: Thu, 7 May 2015 13:21:09 +0200 (CEST) From: Wojciech Puchar <wojtek@puchar.net> To: "Julian H. Stacey" <jhs@berklix.com> Cc: NGie Cooper <yaneurabeya@gmail.com>, "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org>, Ryan Stone <rysto32@gmail.com> Subject: Re: What's required to make removal of a mounted USB stick safe? Message-ID: <alpine.BSF.2.20.1505071320590.870@laptop.wojtek.intra> In-Reply-To: <201505062159.t46Lx0iZ028607@fire.js.berklix.net> References: <201505062159.t46Lx0iZ028607@fire.js.berklix.net>
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> - Deep kernel work (dont hold your breath, see 30 above, & don't look at me :-) > - Cobble up some C to run from user space, not as root, > so that your UFS is not mounted, but accessed by user level > programs (much like mwrite & mread for accessing DOS media of old) > - man 8 amd : set a short timeout to auto unmount, > it wont total solve your problem, but should lessen the frequency of panics. > - Mount the USB media on a spare laptop running as an NFS+ AMD server, > then access the FS via NFS from your real client big PC. When > you pull the stick by accident forgetting its mounted, just the > laptop crashes afte a bit, the AMD access on the other PC just > hangs but doesnt crash. > - Encourage A SOC (google summer of code) student to look at it, > probably wont come to a solution though, see 30 above. > - Toss money at the problem :-) If your company can afford some cash, either: > - help fund FreeBSD Foundation & ask them to solve it, > - Or pay some consultant somewhere to look at it, Here's a globaly > geographicaly indexed list http://berklix.com/consultants/ > maybe there's one near your company ? - mount using fuse
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