From: Pavel Machek Subject: Re: [patch] ext2/3: document conditions when reliable operation is possible Date: Tue, 25 Aug 2009 11:34:15 +0200 Message-ID: <20090825093414.GB15563@elf.ucw.cz> References: <82k50tjw7u.fsf@mid.bfk.de> <20090824130125.GG23677@mit.edu> <20090824195159.GD29763@elf.ucw.cz> <4A92F6FC.4060907@redhat.com> <20090824205209.GE29763@elf.ucw.cz> <4A930160.8060508@redhat.com> <20090824212518.GF29763@elf.ucw.cz> <20090824223915.GI17684@mit.edu> <20090824230036.GK29763@elf.ucw.cz> <4A932B18.1020209@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Theodore Tso , Florian Weimer , Goswin von Brederlow , Rob Landley , kernel list , Andrew Morton , mtk.manpages@gmail.com, rdunlap@xenotime.net, linux-doc@vger.kernel.org, linux-ext4@vger.kernel.org, corbet@lwn.net To: Ric Wheeler Return-path: Content-Disposition: inline In-Reply-To: <4A932B18.1020209@redhat.com> Sender: linux-doc-owner@vger.kernel.org List-Id: linux-ext4.vger.kernel.org Hi! >>> If your concern is that with Linux MD, you could potentially lose an >>> entire stripe in RAID 5 mode, then you should say that explicitly; but >>> again, this isn't a filesystem specific cliam; it's true for all >>> filesystems. I don't know of any file system that can survive having >>> a RAID stripe-shaped-hole blown into the middle of it due to a power >>> failure. >>> >> >> Again, ext2 handles that in a way user expects it. >> >> At least I was teached "ext2 needs fsck after powerfail; ext3 can >> handle powerfails just ok". > > So, would you be happy if ext3 fsck was always run on reboot (at least > for flash devices)? For flash devices, MD Raid 5 and anything else that needs it; yes that would make me happy ;-). Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html