Would you recommend Reiser4?

kernelOfTruth · Posted: Tue May 01, 2007 9:50 pm Post subject:

just got a mail from Edward from Namesys:

snip:

Pse · Posted: Wed May 02, 2007 2:55 am Post subject:

dR0PS · Posted: Wed May 02, 2007 8:53 pm Post subject:

patched over viper-sources-2.6.21-r1, compiled, works

back in business :roll:

thanx for posting

dR0PS
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vipernicus · Posted: Wed May 02, 2007 8:56 pm Post subject:

devsk · Posted: Mon May 07, 2007 8:38 pm Post subject:

Longtime R4 user. Never a single corruption.
R4 is highly recommended.
Always apply patch yourself on either vanilla or gentoo-sources.
Do not apply any other patch on top.
Do not use mm-sources.
Others non-official patches can screw up things and everyone gets to blame R4.
Do not use compression plugin with very old cpu. A recent dual core is recommended.
Do not use compression plugin on partitions with mostly audio/video files...

Use the default compression plugin.

The compression plugin gave me 50% space back (a fully loaded install went from 5.2G to 2.5G) and tar cpf (with drop_caches to avoid kernel cache effect) on kernel sources became 50% faster. See this thread for exact numbers:

http://forums.gentoo.org/viewtopic.php?p=4045301

Latest official patch for 2.6.21.

ftp://ftp.namesys.com/pub/reiser4-for-2.6/2.6.21/

Now you are free to enjoy the best file system ever...

vipernicus · Posted: Mon May 07, 2007 9:11 pm Post subject:

vipernicus · Posted: Tue May 08, 2007 11:16 am Post subject:

Trying to locate a livecd that has reiser4progs 1.0.6. I've tried to use sirdilznik, but they do not boot for me. 64bit livecd is a plus.
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lucke · n00b Joined: 11 May 2005 Posts: 35

RIP has reiser4progs 1.0.6.

mbar · Veteran Joined: 19 Jan 2005 Posts: 1902 Location: Poland

I have my 64bit livecd with reiser4 1.0.6 and your kernel (2.6.21-viper1), just tell me where to upload it (approx. 158 MB).

yngwin · Posted: Tue May 08, 2007 12:24 pm Post subject:

http://www.kernel-of-truth.net/amd64_r7/amd64-r7.tar.bz2
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Elv13 · Posted: Tue May 08, 2007 12:35 pm Post subject:

Reiser4 killed my gentoo install and almost my computer. I had to close it using reset and some time it gived me "disk boot failure". I also lost some data and rebuilted the fs from live-cd many time because it was not booting anymore. Now gentoo just don't boot and i installed sabayon 3.3 for replace it until i get some time. DON'T USE REISER4 IT'S BAD. No it is not stable.

MrVahn · Apprentice Joined: 30 Dec 2006 Posts: 227 Location: Makati

That's why it is still experimental. I put my portage into a 500Mb reiser4 partition. The rest is exi3 to be safe.

mbar · Veteran Joined: 19 Jan 2005 Posts: 1902 Location: Poland

bollocks

devsk · Posted: Thu May 17, 2007 7:38 pm Post subject:

OK, I am hitting a very strange problem. This is with official reiser4 patch on top of gentoo-sources-2.6.21.

Some times smbd, firefox or vmware processes end up in 'D' state and they block everything else. IO wait goes to 100%. I can login from my other machine most of the time. Some times /bin/bash goes into 'D' state disallowing me that login. If I am lucky and I have a root window accessible, and I do 'sync', everything starts working again, until the next time it happens. Otherwise the problem resolves itself after 10-15 minutes. This has become annoying.

Did anyone else experience this situation using the compress plugin? Does anyone know what causes this, and how to fix it? This does not happen if '/' partition doesn't use crypto-compress plugin. Also, I notice that the compress plugin incorrectly concludes that .iso files are compressible. A simple comparison between livecd.iso on a compress partition and a non-compress partition shows a huge speed loss in reading/writing an ISO on a crypto-compress partition.

Vegan · Tux's lil' helper Joined: 29 Mar 2007 Posts: 133

compress plugin is quite experimental , besides copmression on reiser4 especially with gzip requiere strong cpu and from my experience 100%CPU usage is normal with some operations , Use it only if you got really strong cpu and you really ned it ( you got small disk )
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devsk · Posted: Thu May 17, 2007 8:31 pm Post subject:

I am using default plugin, not the gzip. Also, I have a dual core (3800 X2), so cpu usage is fine. The problem is 100% IO wait which freezes the system for a while. A quick 'sync' (if I can issue one) resolves the issue. So, it seems like some processes aren't getting what they want from reiser4 when it is running in compress mode. A 'sync' forces the issue and gets processes out of the 'D' state.

vipernicus · Posted: Fri May 18, 2007 1:13 am Post subject:

devsk · Posted: Fri May 18, 2007 1:44 am Post subject:

Gentree · Posted: Sun May 20, 2007 8:47 pm Post subject:

hi, this has been tempting me for a while. What are you calling "old" cpu here. I have Barton core XP clocking at 2.4GHz , is that likely to be upto the job?

@vipers , I've been using 2.6.20-nicus1 for a while which has been very reliable. Many thx. Which of your offerings would you recommend to test compression?

TIA.

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devsk · Posted: Mon May 21, 2007 6:07 pm Post subject:

enderandrew · l33t Joined: 25 Oct 2005 Posts: 731

I'm swearing off ext4 and I've been considering giving JFS a try, or going back to Reiser4.

http://linuxhelp.150m.com/resources/fs-benchmarks.htm

I know for a while the Reiser4 crowd has been saying, just wait until we get the compression code in.

The above site has REALLY impressive numbers (if you can trust them). The site also throws in a political jab about Hans that I'm ignoring, but if I could have a reasonably fast FS that did transparent compression, that would be amazing. My main concern is that it will be very CPU intensive.

My next concern is if I wipe my root system (already corrupted by ext4 anyway) and do a fresh new install, then I need a 64-bit live CD/DVD with a recent enough kernel to create Reiser4 with compression.

Anyone know of one, or a quick/easy way to make a live CD myself?
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kernelOfTruth · Posted: Mon Sep 17, 2007 10:51 pm Post subject:

search for the amd64 r7 release: http://www.kernel-of-truth.net/downloads_kOT.html

alternatively use sirdilznik's livecd:

http://forums.gentoo.org/viewtopic-t-550466-postdays-0-postorder-asc-start-0.html
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Mantaar · Apprentice Joined: 17 May 2007 Posts: 219

The one time I had reiser4 on my system I went through a complicated bootstrapping procedure that involved installing a base system on one partition that was to become swap and then compiling a patched kernel from there.

Not that complicated actually, if you know what you're doing. Just one more reboot. Wasn't really that hard and rolling your own liveCD surely is likely to cause more blood sweat and tears...
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enderandrew · l33t Joined: 25 Oct 2005 Posts: 731

tokugawa · Posted: Fri Dec 28, 2007 1:29 am Post subject: No! just No

Hi,

I'll vote No for Reiser4. Maybe on non changing kernel works ok (not my case - I like to upgrade kernel). Maybe for 99.99% of time it works.

I have used it for very long time (years) and it worked... I was amazed by it's speed (emerge works great on top of it).
...but yesterday I saw 'reiser4 panic' on my fresh kernel - it happens randomly on half-year or so.

Yes, i know that my system is .. well.. experimental but I have switched to ext3 on / and problems went off (I remind once more - reiser4 failed on me only a few times during that years). Now I'm switching to ext3 on /home. And please remember "switched" means that I worked on ext3 for one year on one partition.

In my opinion ? Reiser4 is STILL experimental.