From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anders Aagaard Subject: Reiser4 on dmcrypt Date: Fri, 15 Aug 2008 16:45:41 +0200 Message-ID: <48A59695.5030701@gmail.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from :user-agent:mime-version:to:subject:content-type :content-transfer-encoding; bh=dG/+Rk7IWu2c3AxV3PiypToMhzPZcT9QrHg5PIQKalI=; b=fJ7+7fk+rgdTIrgrYmmsLo07A3pboiHuNPFhEglPnwkhKcQg0i9OkJ/WB2ZKYqOwsl lfJikoA6frdose9yH84pSxaKMG4yYhKPs2jZEv3m6lwgrooAg6asgrQPUWKK2kvdpcnr VAtqKPWzpQat8t1a86j7oRiariH+rwslTU/08= Sender: reiserfs-devel-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: reiserfs-devel@vger.kernel.org Hi Been trying to move my home directory over to reiser4, and I ran into some issues, this is what I did: PASSCODE="temptest" echo $PASSCODE | cryptsetup luksFormat /dev/sdf6 -c twofish-cbc-essiv:sha256 -s 256 echo $PASSCODE | cryptsetup luksOpen /dev/sdf6 tempHome mkfs.reiser4 -o create=ccreg40,compress=lzo1 /dev/mapper/tempHome mount -t reiser4 -o noatime /dev/mapper/tempHome /mnt/x rsync -vax --progress /home/neuron/ /mnt/x/ During rsync I noticed this in top while moving over a virtualbox image: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 2427 root 20 0 0 0 0 R 100 0.0 14:32.01 pdflush 9497 root 20 0 0 0 0 R 100 0.0 11:38.48 rsync It did continue, but I figured something was wrong, so I interrupted the rsync and unmounted. The rsync reported my copy speed was down to 3-4mb/sec. This is on a fairly new quad core, so I should be able to encrypt and compress the data without difficulty. I remounted and started again, it starts by coping at 14-15mb/sec, and then just slows down as pdflush hits 100% cpu usage. Iowait also goes down to around 5%. When I interrupt it pdflush disapears instantly, and rsync sticks around for 10-15 seconds (making it unmountable for that period) until it dies. The file it's having problems with is a 6.8gb virtualbox image I use as a gentoo test enviroment. Anders Aagaard