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Message-ID: <5263D576.70202@linux.com> Date: Sun, 20 Oct 2013 15:07:02 +0200 From: Levente Kurusa <levex@...ux.com> To: jiaweiwei <jiaweiwei.xiyou@...il.com>, Theodore Ts'o <tytso@....edu>, Vyacheslav Dubeyko <slava@...eyko.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Harry Wei <harryxiyou@...il.com> Subject: Re: [RFC] Rollback FS 2013-10-20 14:59 keltezéssel, jiaweiwei írta: > On Sun, Oct 20, 2013 at 8:35 PM, Theodore Ts'o <tytso@....edu> wrote: >> On Sun, Oct 20, 2013 at 07:37:01PM +0800, jiaweiwei wrote: >>> >>> Any file system should rollback but not specific ones. Therefore, a >>> VFS like mechanism should be designed and implemented. >> >> And what if the blocks or inodes used for the files that were deleted >> have already been used and overwritten? > > A good catch. Following ideas would be suitable. > > 1, Keep the blocks or inodes by a parameter we give. > 2, Keep the blocks or inodes for several seconds. Keep them where? On the HDD? We just deleted/moved that. In memory? How about a 4+ GB file(s)? > >> >>> Maybe, I would give detail design, thanks. >> >> I encourage you to try to do that; you might find it to be an >> educational exercise. >> > > Yeah, I would, thanks. > > I think he meant to be ironic. -- Regards, Levente Kurusa -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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