From yonathanaw@gmail.com Tue Jun 23 13:17:31 2009 Received: from an-out-0708.google.com ([209.85.132.241]) by stoneboat.aleph1.co.uk with esmtp (Exim 4.69) (envelope-from ) id 1MJ4wL-0007RG-6C for yaffs@stoneboat.aleph1.co.uk; Tue, 23 Jun 2009 13:17:31 +0100 Received: by an-out-0708.google.com with SMTP id b2so5565ana.40 for ; Tue, 23 Jun 2009 05:17:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:date:message-id:subject :from:to:content-type:content-transfer-encoding; bh=KIzAsbCLccZAplHP3YH8e2LZVRWHTE08jv7m79iEe3k=; b=qM4T2rm+I1HuEWNJtdT1LXbnG+uBP6ZP5kNG4h9jzs/YhNYsFVevnDBFcpehNpm1pz aDjokU8WPnnH4dQqBGN1T56d6tnw2fptyTND8rLJvXs3RpspxYu7g7aBR/K3G+ozaOWm brSJkvqtUndV9+m1TGtilzmBHGMXwAzKGNusc= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type :content-transfer-encoding; b=OudofERsF9O3DxgYHV2je5xq4iD6ko3AtWVEFdZwHaxslK9gvZ40HShS+T9kODSQ8E FemGW57apWpCnufoZh59Ku73pGNkzKMgR/PNo/PY9sc1L8wTjuLo2bLTGYXuWj+idvZ7 pkwfdEUhEbTF2YZlV/AhhYmcDnXczI+o/Hl10= MIME-Version: 1.0 Received: by 10.231.13.198 with SMTP id d6mr2213421iba.32.1245759448044; Tue, 23 Jun 2009 05:17:28 -0700 (PDT) Date: Tue, 23 Jun 2009 17:47:28 +0530 Message-ID: <51d250110906230517t5b20e06blb2265f8030087a1f@mail.gmail.com> From: yonathana wodeselia To: yaffs@stoneboat.aleph1.co.uk Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-SA-Exim-Connect-IP: 209.85.132.241 X-SA-Exim-Mail-From: yonathanaw@gmail.com X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on stoneboat.aleph1.co.uk X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,SPF_PASS autolearn=no version=3.2.5 X-SA-Exim-Version: 4.2.1 (built Wed, 25 Jun 2008 17:14:11 +0000) X-SA-Exim-Scanned: Yes (on stoneboat.aleph1.co.uk) Subject: [Yaffs] umounting yaffs rootfs X-BeenThere: yaffs@lists.aleph1.co.uk X-Mailman-Version: 2.1.11 Precedence: list List-Id: Discussion of YAFFS NAND flash filesystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 23 Jun 2009 12:17:32 -0000 Dear All, I have a yaffs based root filesystem which works perfectly. The concern is that if i am using yaffs as the rootfs , poweroff/halt/reboot wont umount the rootfs and says it is busy. After the reboot this unclean reboot adds a 8 second delay mounting the yaffs rootfs. On the other hand if i boot into an alternate rootfs , mount original yaffs rootfs , umount original yaffs rootfs and reboot into the original rootfs then i dont see the 8 second delay . I assume this is because of checkpointing ? How can i avoid this 8 seconds delay ? Is using a initrd the only way to be able to cleanly umount the yaffs partition? Is umounting very critical ? Please shed some pointers on how to efficiently use yaffs as a rootfs. regards, Yoni