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Open Source and information security mailing list archives
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Date: Tue, 2 Apr 2019 08:46:32 +1100 From: Dave Chinner <david@...morbit.com> To: "Darrick J. Wong" <darrick.wong@...cle.com> Cc: linux-fsdevel <linux-fsdevel@...r.kernel.org>, linux-ext4 <linux-ext4@...r.kernel.org>, xfs <linux-xfs@...r.kernel.org> Subject: Re: [PATCH] bootfs: simple bootloader filesystem On Mon, Apr 01, 2019 at 12:00:01AM -0700, Darrick J. Wong wrote: > From: Darrick J. Wong <djwong@...nel.org> > > Does your computer use a bootloader which arrogantly declares that it can > read boot files off a filesystem but isn't sophisticated enough even to > recognize when that filesystem needs journal recovery? > > Does your system software deployment program foolishly omit system calls > to flush newly unwrapped packages to disk? Do you sometimes wonder if > they've forgotten that old maxim, "wait for the disk drive light to turn > off /before/ you power down"? > > Are your computer operators aggressively derpy? Do they have a habit of > leaving disk cables on the floor so they can trip over them twenty times > a day? Does this leave you with sad files full of zeroes? > > If so, bootfs is for you! This new filesystem type uses journalling to > ensure metadata integrity, but forces all writes and directory tree > updates to be synchronous, fsyncs files on close, and checkpoints its > journal whenever a synchronization event happens. Some allege this is > very slow, but I've been able to max out the iops on both of my double > height floppy drives! In a power-cycling stress test, I found that the > switch broke off in my hand before I lost any data. This concept may > sound terrible, but like any good crutch, it _is_ made of wood! > > Singed-off-by: Darrick J. Wong <djwong@...nel.org> ^^^^^^^^^^ Ooooo - such a hot topic! Finally bootfs is more than just we-really-should-do-this conference talk! Looks good to me - with this we can finally move on from LILO.... Acked-by: Dave Chinner <david@...morbit.com> FWIW, Should this have a cc: stable@...nel.org tag on it so it gets out into distro-world ASAP? Cheers, Dave. -- Dave Chinner david@...morbit.com
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