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Date: Sat, 5 Aug 2017 07:16:21 -0700 From: Christoph Hellwig <hch@...radead.org> To: Colin Walters <walters@...bum.org> Cc: "Darrick J. Wong" <darrick.wong@...cle.com>, xfs <linux-xfs@...r.kernel.org>, linux-fsdevel <linux-fsdevel@...r.kernel.org>, linux-ext4 <linux-ext4@...r.kernel.org> Subject: Re: [PATCH] vfs: freeze filesystems just prior to reboot > Any objections to something like an ioctl (fd, FIFREEZETHAW, 0) ? It's going to be completely trivial, which argues for it. The only points left woul be bikeshedding over the name, and how to describe its semantics. > in the end probably the real fix is probably something like storing > multiple copies of the bootloader config with checksums that grub > can verify. Basically teach grub to try really hard to extract known-good > data from the FS. For file-level consistency that'd be pretty easy, > we could have e.g. The real answer is to have a filesystem that does the above for you for the boot partition, e.g. one where the kernel and grub have a common consistency protocol for.
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