reiserfs

reiserfs

[Pete Popov]

Has anyone been able to run reiserfs on big endian systems?

Pete

Re: reiserfs

[Ralf Baechle]

On Wed, Apr 24, 2002 at 04:13:06PM -0700, Pete Popov wrote:

> Has anyone been able to run reiserfs on big endian systems?

I've seen reports of people running Reiserfs on MIPS but I don't know what
endianess.

  Ralf

Re: reiserfs

[Geert Uytterhoeven]

On Thu, 25 Apr 2002, Ralf Baechle wrote:
> On Wed, Apr 24, 2002 at 04:13:06PM -0700, Pete Popov wrote:
> > Has anyone been able to run reiserfs on big endian systems?
> 
> I've seen reports of people running Reiserfs on MIPS but I don't know what
> endianess.

Some people run it on PowerPC, which is big endian as far as Linux is
concerned.

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds

Re: reiserfs

[Pete Popov]

On Thu, 2002-04-25 at 01:11, Geert Uytterhoeven wrote:
> On Thu, 25 Apr 2002, Ralf Baechle wrote:
> > On Wed, Apr 24, 2002 at 04:13:06PM -0700, Pete Popov wrote:
> > > Has anyone been able to run reiserfs on big endian systems?
> > 
> > I've seen reports of people running Reiserfs on MIPS but I don't know what
> > endianess.
> 
> Some people run it on PowerPC, which is big endian as far as Linux is
> concerned.

Right, but mips be hangs hard. I'll have to investigate ... MIPS LE is
fine.

Pete

Re: reiserfs

[George Gensure]

Geert Uytterhoeven wrote:

>On Thu, 25 Apr 2002, Ralf Baechle wrote:
>
>>On Wed, Apr 24, 2002 at 04:13:06PM -0700, Pete Popov wrote:
>>
>>>Has anyone been able to run reiserfs on big endian systems?
>>>
>>I've seen reports of people running Reiserfs on MIPS but I don't know what
>>endianess.
>>
>
>Some people run it on PowerPC, which is big endian as far as Linux is
>concerned.
>
>Gr{oetje,eeting}s,
>
>						Geert
>
>--
>Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
>
>In personal conversations with technical people, I call myself a hacker. But
>when I'm talking to journalists I just say "programmer" or something like that.
>							    -- Linus Torvalds
>
Jeff Mahoney, probably the lead big-endian reiserfs developer, has run 
reiserfs on (that I've seen with my own eyes) Sun and Apple (G3 or 
later).  There is no reason his code would not similarly work on 
big-endian mips machines.

-George

Re: reiserfs

[Pete Popov]

On Thu, 2002-04-25 at 01:11, Geert Uytterhoeven wrote:
> On Thu, 25 Apr 2002, Ralf Baechle wrote:
> > On Wed, Apr 24, 2002 at 04:13:06PM -0700, Pete Popov wrote:
> > > Has anyone been able to run reiserfs on big endian systems?
> > 
> > I've seen reports of people running Reiserfs on MIPS but I don't know what
> > endianess.
> 
> Some people run it on PowerPC, which is big endian as far as Linux is
> concerned.

FYI, it turned out to be a toolchain bug (2.95.3). Versions 2.96 and 3.x
work just fine.

Pete

Re: reiserfs

[Pete Popov]

On Sat, 2002-04-27 at 13:19, Alan Cox wrote:
> > Has anyone been able to run reiserfs on big endian systems?
> 
> Should work on newer 2.4 kernels

Yes, it does. I sent an email yesterday explaining what the problem
was.  The 2.95.3 toolchain is miscompiling the cpu_to_le16 and
le16_to_cpu functions. The problem appears to be fixed in 2.96 and 3.x
so reiserfs is looking good for both, LE and BE mips systems.

Pete

Re: reiserfs

[Alan Cox]

> Has anyone been able to run reiserfs on big endian systems?

Should work on newer 2.4 kernels

Re: reiserfs

[Alan Cox]

> Has anyone been able to run reiserfs on big endian systems?

Should work on newer 2.4 kernels

Re: reiserfs

[Jun Sun]

[-- Attachment #1: Type: text/plain, Size: 620 bytes --]

Pete Popov wrote:

> On Sat, 2002-04-27 at 13:19, Alan Cox wrote:
> 
>>>Has anyone been able to run reiserfs on big endian systems?
>>>
>>Should work on newer 2.4 kernels
>>
> 
> Yes, it does. I sent an email yesterday explaining what the problem
> was.  The 2.95.3 toolchain is miscompiling the cpu_to_le16 and
> le16_to_cpu functions. The problem appears to be fixed in 2.96 and 3.x
> so reiserfs is looking good for both, LE and BE mips systems.
> 


Here is the test case that reveals the toolchain problem.  Brave souls are 
welcome to look into it.

Apparently the bug only happens on be tools with 2.95.x.

Jun



[-- Attachment #2: gcc-2.95-le16-to-cpu.bug.c --]
[-- Type: text/plain, Size: 1217 bytes --]

#if 0

compile instructions:

/opt/hardhat/devkit/mips/fp_be/bin/mips_fp_be-gcc -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fomit-frame-pointer -fno-strict-aliasing -fno-common -g -G 0 -mno-abicalls -fno-pic -mcpu=r4600 -mips2 -Wa,--trap -pipe    -c -o try.o try.c

#endif

typedef	unsigned short __u16;
typedef	unsigned __u32;

#define ___swab16_new(x) \
({ \
        __u32 __x = (x); \
        __x = ((__u32)( \
                ((__u32)(__x) << 8) | \
                (((__u32)(__x) & (__u16)0xff00U) >> 8) )); \
        (__u16)(__x & 0xffff); \
})

#define ___swab16(x) \
({ \
        __u16 __x = (x); \
        ((__u16)( \
                (((__u16)(__x) & (__u16)0x00ffU) << 8) | \
                (((__u16)(__x) & (__u16)0xff00U) >> 8) )); \
})

#  define __swab16(x) \
(__builtin_constant_p((__u16)(x)) ? \
  ___swab16((x)) : \
   __fswab16((x)))

#ifndef __arch__swab16
#  define __arch__swab16(x) ({ __u16 __tmp = (x) ; ___swab16(__tmp); })
#endif

static __inline__ __const__ __u16 __fswab16(__u16 x)
{
	        return __arch__swab16(x);
}

#define __le16_to_cpu(x) __swab16((x))
#define le16_to_cpu __le16_to_cpu

extern __u16 x;
extern __u16 y;

void foo_old(void)
{
	if (le16_to_cpu(x) > y) 
		y = x;
}

Re: reiserfs

[Hiroyuki Machida]

Hello, all

From: Jun Sun <jsun@mvista.com>
Subject: Re: reiserfs
Date: Mon, 29 Apr 2002 10:35:54 -0700

> Here is the test case that reveals the toolchain problem.  Brave souls are 
> welcome to look into it.
> 
> Apparently the bug only happens on be tools with 2.95.x.
> 
> Jun

I think this bug has been fixed with
     http://gcc.gnu.org/ml/gcc-patches/2000-02/msg00489.html
for gcc-3.x.

You can apply the patch included that mail to gcc-2.95.x, easily.

---
Hiroyuki Machida
Sony Corp.

reiserfs

[S. Barret Dolph]

I have looked at the various file system stuff for comparison. I have been 
using Reiserfs for some time now and had, until recently, no problems. 

?s

Are Xfs and Jfs still too new to use?

I have used ext3 for my / partition. But I can't remember who told me I should 
do that or why. Is it a good idea or is Reiserfs fine. 

(Other partitions are /swap, /usr, and /home. swap as swap, and the others are 
reiserfs.) 



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Re: reiserfs

[Axel Siebenwirth]

Hi S.!

On Sun, 25 Jan 2004, S. Barret Dolph wrote:

> I have looked at the various file system stuff for comparison. I have been 
> using Reiserfs for some time now and had, until recently, no problems. 

What problems exactly?

> Are Xfs and Jfs still too new to use?

No, they are quite mature filesystems and finally well integrated into the
linux kernel.

> 
> I have used ext3 for my / partition. But I can't remember who told me I should 
> do that or why. Is it a good idea or is Reiserfs fine.

Ext3 is slower as far as I know. Reiserfs is quite stable.
I've had the feeling that JFS was faster when it comes to accessing larger
files and reading large directories, I mean with many files.
I have never actually tried ext3 but have read that it has many problems as
well and is quite slow. The On-disk-layout is very old already.


Axel

> 
> (Other partitions are /swap, /usr, and /home. swap as swap, and the others are 
> reiserfs.) 


____________________________________________________________________________
Axel Siebenwirth				      phone +49 3641 776807 |
Am Birnstiel 3			 		  axel at pearbough dot net |
07745 Jena								    |
Germany________________________________________________http://pearbough.net |

Peeping Tom:
        A window fan.
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Re: reiserfs

[Axel Siebenwirth]

Hi S.!

On Sun, 25 Jan 2004, S. Barret Dolph wrote:

> I have looked at the various file system stuff for comparison. I have been 
> using Reiserfs for some time now and had, until recently, no problems. 
> 
> ?s
> 
> Are Xfs and Jfs still too new to use?
> 
> I have used ext3 for my / partition. But I can't remember who told me I should 
> do that or why. Is it a good idea or is Reiserfs fine. 

An old article at freshmeat.net:
http://freshmeat.net/articles/view/212/
But still applies.

Axel


____________________________________________________________________________
Axel Siebenwirth				      phone +49 3641 776807 |
Am Birnstiel 3			 		  axel at pearbough dot net |
07745 Jena								    |
Germany________________________________________________http://pearbough.net |

Recent research has tended to show that the Abominable No-Man
is being replaced by the Prohibitive Procrastinator.
                -- C.N. Parkinson
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Re: reiserfs

[Ken Moffat]

On Sun, 25 Jan 2004, Axel Siebenwirth wrote:

>
> Ext3 is slower as far as I know. Reiserfs is quite stable.
> I've had the feeling that JFS was faster when it comes to accessing larger
> files and reading large directories, I mean with many files.
> I have never actually tried ext3 but have read that it has many problems as
> well and is quite slow. The On-disk-layout is very old already.
>

Ooh, almost FUD!  I remember reading a sound-recording HOWTO suggesting
ext2 was slow, but I use it on all my machines, I've had no problems
with it, and I've seen no speed problems attributable to the filesystem

:)

Ken
-- 
This is a job for Riviera Kid!
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Re: reiserfs

[Ken Moffat]

On Mon, 26 Jan 2004, Ken Moffat wrote:

> On Sun, 25 Jan 2004, Axel Siebenwirth wrote:
>
> >
> > Ext3 is slower as far as I know. Reiserfs is quite stable.
> > I've had the feeling that JFS was faster when it comes to accessing larger
> > files and reading large directories, I mean with many files.
> > I have never actually tried ext3 but have read that it has many problems as
> > well and is quite slow. The On-disk-layout is very old already.
> >
>
> Ooh, almost FUD!  I remember reading a sound-recording HOWTO suggesting
> ext2 was slow, but I use it on all my machines, I've had no problems
> with it, and I've seen no speed problems attributable to the filesystem
>
> :)
>
> Ken
>

s/ext2/ext3/ # learn to proofread before hitting enter
-- 
This is a job for Riviera Kid!
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reiserfs

[Joey Dale]

What is the target release date for Reiserfs 4?

Re: reiserfs

[Stewart Smith]

On Mon, 2004-02-09 at 06:32, Joey Dale wrote:
> What is the target release date for Reiserfs 4?

Hans has basically said "When it's stable" - i.e. they can't crash it.

which is a good thing - reliable file systems are GOOD :)

-- 
Stewart Smith (stewart@flamingspork.com)
http://www.flamingspork.com/

Re: reiserfs

[Joey Dale]

How stable i.e. how crashable is it now?


On Mon, 2004-02-09 at 06:32, Joey Dale wrote:

>> What is the target release date for Reiserfs 4?
>  
>

Hans has basically said "When it's stable" - i.e. they can't crash it.

which is a good thing - reliable file systems are GOOD 

-- 

ReiserFS

[Russell Coker]

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=134111

We are having some discussions of ReiserFS in the Red Hat bugzilla.

fs_use_xattr reiserfs system_u:object_r:fs_t;

It seems to me that the easiest solution is to remove the above line from 
fs_use and add the following to genfs_contexts:

genfscon reiserfs /                     system_u:object_r:nfs_t

The reason for this hack is that we already have the policy for home 
directories on NFS.  ReiserFS will never work for a root FS and isn't worth 
any more effort than this hack.

Another suggestion was to entirely remove ReiserFS support from Fedora (IE no 
reiserfs.ko file in the kernel package).

-- 
http://www.coker.com.au/selinux/   My NSA Security Enhanced Linux packages
http://www.coker.com.au/bonnie++/  Bonnie++ hard drive benchmark
http://www.coker.com.au/postal/    Postal SMTP/POP benchmark
http://www.coker.com.au/~russell/  My home page

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Re: ReiserFS

[Russell Coker]

On Thu, 30 Sep 2004 05:12, Russell Coker <russell@coker.com.au> wrote:
> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=134111
>
> We are having some discussions of ReiserFS in the Red Hat bugzilla.
>
> fs_use_xattr reiserfs system_u:object_r:fs_t;
>
> It seems to me that the easiest solution is to remove the above line from
> fs_use and add the following to genfs_contexts:
>
> genfscon reiserfs /                     system_u:object_r:nfs_t

allow mount_t unlabeled_t:dir search;

I almost forgot to mention that mount_t needs search access to a directory of 
type unlabeled_t for the above hack to work.  Not sure why, but it's fairly 
harmless.

-- 
http://www.coker.com.au/selinux/   My NSA Security Enhanced Linux packages
http://www.coker.com.au/bonnie++/  Bonnie++ hard drive benchmark
http://www.coker.com.au/postal/    Postal SMTP/POP benchmark
http://www.coker.com.au/~russell/  My home page

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Re: ReiserFS

[Stephen Smalley]

On Wed, 2004-09-29 at 15:12, Russell Coker wrote:
> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=134111
> 
> We are having some discussions of ReiserFS in the Red Hat bugzilla.
> 
> fs_use_xattr reiserfs system_u:object_r:fs_t;
> 
> It seems to me that the easiest solution is to remove the above line from 
> fs_use and add the following to genfs_contexts:
> 
> genfscon reiserfs /                     system_u:object_r:nfs_t
> 
> The reason for this hack is that we already have the policy for home 
> directories on NFS.  ReiserFS will never work for a root FS and isn't worth 
> any more effort than this hack.

This seems reasonable, at least until someone chooses to pursue the
necessary patches to the reiserfs xattr support to allow proper
interaction with SELinux.

-- 
Stephen Smalley <sds@epoch.ncsc.mil>
National Security Agency


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