Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!news.dougwise.org!news-transit.tcx.org.uk!eternal-september.org!feeder.eternal-september.org!.POSTED!not-for-mail From: Tim Watts Newsgroups: alt.os.linux.slackware,comp.os.linux.misc Subject: Re: Does journaling wear USBstik ? Followup-To: alt.os.linux.slackware Date: Sun, 03 Apr 2011 18:53:05 +0100 Organization: A noiseless patient Spider Lines: 54 Message-ID: <1pom68-hf6.ln1@squidward.dionic.net> References: Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7Bit Injection-Info: mx01.eternal-september.org; posting-host="6oIlEBqCjOm0MjsSUEk5CA"; logging-data="11377"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/6aIEvBG4YnZhzzPV2ET+Re3yTpTzKAHM=" User-Agent: KNode/4.4.6 Cancel-Lock: sha1:/Jrtrd/C3jRzEPZLQt+tdXDCXGs= Xref: x330-a1.tempe.blueboxinc.net comp.os.linux.misc:589 no.top.post@gmail.com wrote: > I like this slak-based CD-runner, since it automounts everything. > > And for `mount` it shows:- > ... > /dev/hda12 on /mnt/hda12 type ext2 (rw,noatime) > /dev/hda14 on /mnt/hda14 type ext3 (rw,noatime) > /dev/hda16 on /mnt/hda16 type reiserfs (rw,noatime) > ... > /dev/sda on /mnt/sda type vfat > (rw,noatime,quiet,umask=0,check=s,shortname=mixed) > > > Is it true that reiserfs and/or ext3 writes to the disk, > on a regular basis, even if the PC is not 'used' for days? I don't believe so. what happens is every time you update something on the filesystem, is the journal will get hit (usually for meta-data updates, but ext3 can be mounted so all data updates are journalled too). The journal is in one place on th device to it gets hit repeatedly whereas the data tends to be spread around (depending on what you are doing). I'm surprised anyone is still using resierfs - SuSE by any chance? > And that this would cause significant 'wear' to limited-life > flash-memories? Can do - some hav auto wear levelling in hardware so mitigate this. If you don't do a lot of writes to the device then it doesn't matter much anyway. You have noatime which will help too. > But this doesn't apply to vfat? Correct. > And if I eventually get to partition a USBstik to reiserfs > and ext3 , there's a switch to disable the repeated writing? You can mount ext3 without journally - it effectively behaves like ext2. HTH Tim > This CD doesnt have any s. > > == TIA. -- Tim Watts