Re: ReiserFS and lost+found

2002-04-25 Thread Kurt Wall

Scribbling feverishly on April 24, Roger Oberholtzer managed to emit:

[...]

> We will try ext3. Previously, we used UnixWare's Veriatis (bad spelling)
> journaling FS, which I think is simply excellent. The Linux jfs are
> a bit new to us. So, we are experimenting a bit as we go along.

XFS is far superior, IMNSHO. Not part of the official kernel, but it
has proven itself over time in Irix.

Kurt
-- 
Bride, n.:
A woman with a fine prospect of happiness behind her.
-- Ambrose Bierce, "The Devil's Dictionary"
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Re: ReiserFS and lost+found

2002-04-24 Thread Roger Oberholtzer

On Tue, 23 Apr 2002 11:52:23 -0500
"David A. Bandel" <[EMAIL PROTECTED]> wrote:

> On Tue, 23 Apr 2002 10:45:50 -0400
> begin  Kurt Wall <[EMAIL PROTECTED]> spewed forth:
> 
> > Hallo, list,
> > 
> > Roger asked about ReiserFS and the absence of a lost+found
> > directory. I have an all ReiserFS system at work and none of the
> > filesystems have a lost+found directory. This is as of whatever patch
> > set was necessary for kernel 2.4.5. I don't *think* Reiser uses a
> > lost+found directory, but you could ask on the Reiser lists at
> > namesys.com.
> > 
> 
> In all my years, and more different filesystems than I care to think
> about, journalling or not, _all_ partitions contain a lost+found
> directory.  Someone at reiser must think you'll never need it, but I'd
> create one (use the mklost+found utility to do it right).  Otherwise,
> where do you dump disconnected inodes (and don't tell me reiserfs will
> _never_ have this issue).

I agree. But it is up to the reiser-specific fsck to make use of lost+found.
Seems it does not. Maybe it repairs stuff and maintains the info in its
journal, thus not needing to modify the file system itself. Just a guess.

-- 
++===+
| Roger Oberholtzer  |   E-mail:[EMAIL PROTECTED] |
| OPQ Systems AB |  WWW:  http://www.opq.se/ |
| Erik Dahlbergsgatan 41-43  |Phone: Int + 46 8   314223 |
| 115 32 Stockholm   |   Mobile: Int + 46 733 621657 |
| Sweden |  Fax: Int + 46 8   302602 |
++===+

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Re: ReiserFS and lost+found

2002-04-24 Thread Roger Oberholtzer

On Tue, 23 Apr 2002 13:21:41 -0400
Kurt Wall <[EMAIL PROTECTED]> wrote:

> Scribbling feverishly on April 23, Roger Oberholtzer managed to emit:
> > On Tue, 23 Apr 2002 10:45:50 -0400
> > Kurt Wall <[EMAIL PROTECTED]> wrote:
> > 
> > > directory. I have an all ReiserFS system at work and none of the
> > > filesystems have a lost+found directory. This is as of whatever patch
> > > set was necessary for kernel 2.4.5. I don't *think* Reiser uses a
> > > lost+found directory, but you could ask on the Reiser lists at
> > > namesys.com.
> > 
> > I will. Mine is for 2.4.13 (i.e., Caldera 3.1.1). The lost+found
> > directory is only used by the fsck utility, not the kernel. But, it must
> > exist and have lots of empty directory entries allocated. I will next
> > check the reiserfs fsck utility. There is no mention of lost+found in
> > that program's man pages. Next stop: source. I also see that the
> > mklost+found program only references ext2. But ext3 has a lost+found as
> > well. So I cannot trust that info as being complete. It is all up to the
> > fs-specific fsck utility.
> 
> I think the argument is that the journalled metadata can be replayed,
> obviating the neeed for lost+found. But, like you, I'm a tad
> uncomfortable with that notion. I checked with our filesystems guy
> here and he still doesn't totally trust ReiserFS. His recommendation
> is good enough for me. Obviously, *no* filesystem is perfect, but I
> tend to trust ext3 (ext2+journalling) or one of the more time-tested
> filesystems like XFS or OpenAFS.

We have had a bit of trouble with this Reiser setup. Of course, our
equipment is installed in vehicles that measure road surface roughness. So
the systems tend to bounce around a bit. But in 15 years, we have not had a
hard disk failure in any system. (Looking for wood. Knonk knock.) This could
just be bad luck. The Saudis are not keeping the roads up near the
border with Iraq in such great shape, but they still monitor their
condition. However, our roughness/speed measurements do not indicate that
the hard disk was overly bounced.

We will try ext3. Previously, we used UnixWare's Veriatis (bad spelling)
journaling FS, which I think is simply excellent. The Linux jfs are
a bit new to us. So, we are experimenting a bit as we go along.

-- 
++===+
| Roger Oberholtzer  |   E-mail:[EMAIL PROTECTED] |
| OPQ Systems AB |  WWW:  http://www.opq.se/ |
| Erik Dahlbergsgatan 41-43  |Phone: Int + 46 8   314223 |
| 115 32 Stockholm   |   Mobile: Int + 46 733 621657 |
| Sweden |  Fax: Int + 46 8   302602 |
++===+

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Re: ReiserFS and lost+found

2002-04-23 Thread Kurt Wall

Scribbling feverishly on April 23, Roger Oberholtzer managed to emit:
> On Tue, 23 Apr 2002 10:45:50 -0400
> Kurt Wall <[EMAIL PROTECTED]> wrote:
> 
> > directory. I have an all ReiserFS system at work and none of the
> > filesystems have a lost+found directory. This is as of whatever patch
> > set was necessary for kernel 2.4.5. I don't *think* Reiser uses a
> > lost+found directory, but you could ask on the Reiser lists at
> > namesys.com.
> 
> I will. Mine is for 2.4.13 (i.e., Caldera 3.1.1). The lost+found directory
> is only used by the fsck utility, not the kernel. But, it must exist and
> have lots of empty directory entries allocated. I will next check the
> reiserfs fsck utility. There is no mention of lost+found in that program's
> man pages. Next stop: source. I also see that the mklost+found program only
> references ext2. But ext3 has a lost+found as well. So I cannot trust
> that info as being complete. It is all up to the fs-specific fsck utility.

I think the argument is that the journalled metadata can be replayed,
obviating the neeed for lost+found. But, like you, I'm a tad
uncomfortable with that notion. I checked with our filesystems guy
here and he still doesn't totally trust ReiserFS. His recommendation
is good enough for me. Obviously, *no* filesystem is perfect, but I
tend to trust ext3 (ext2+journalling) or one of the more time-tested
filesystems like XFS or OpenAFS.

Kurt
-- 
Time is nature's way of making sure that everything doesn't happen at
once.
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Re: ReiserFS and lost+found

2002-04-23 Thread David A. Bandel

On Tue, 23 Apr 2002 10:45:50 -0400
begin  Kurt Wall <[EMAIL PROTECTED]> spewed forth:

> Hallo, list,
> 
> Roger asked about ReiserFS and the absence of a lost+found
> directory. I have an all ReiserFS system at work and none of the
> filesystems have a lost+found directory. This is as of whatever patch
> set was necessary for kernel 2.4.5. I don't *think* Reiser uses a
> lost+found directory, but you could ask on the Reiser lists at
> namesys.com.
> 

In all my years, and more different filesystems than I care to think
about, journalling or not, _all_ partitions contain a lost+found
directory.  Someone at reiser must think you'll never need it, but I'd
create one (use the mklost+found utility to do it right).  Otherwise,
where do you dump disconnected inodes (and don't tell me reiserfs will
_never_ have this issue).

Ciao,

David A. Bandel
-- 
Focus on the dream, not the competition.
-- Nemesis Racing Team motto
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Re: ReiserFS and lost+found

2002-04-23 Thread Roger Oberholtzer

On Tue, 23 Apr 2002 10:45:50 -0400
Kurt Wall <[EMAIL PROTECTED]> wrote:

> Hallo, list,
> 
> Roger asked about ReiserFS and the absence of a lost+found
> directory. I have an all ReiserFS system at work and none of the
> filesystems have a lost+found directory. This is as of whatever patch
> set was necessary for kernel 2.4.5. I don't *think* Reiser uses a
> lost+found directory, but you could ask on the Reiser lists at
> namesys.com.

I will. Mine is for 2.4.13 (i.e., Caldera 3.1.1). The lost+found directory
is only used by the fsck utility, not the kernel. But, it must exist and
have lots of empty directory entries allocated. I will next check the
reiserfs fsck utility. There is no mention of lost+found in that program's
man pages. Next stop: source. I also see that the mklost+found program only
references ext2. But ext3 has a lost+found as well. So I cannot trust
that info as being complete. It is all up to the fs-specific fsck utility.

(I had a crew claim that their file system was screwy. When they reported
that there was no lost+found, I got concerned. Seems it was a full hard disk.
The KDE editor happily 'saves' empty files without nary a complaint when
the disk is full. And mcopy dumps core with no message the crew cared to
recognize. How odd. I need to check 'disk full' functionality.)

-- 
++===+
| Roger Oberholtzer  |   E-mail:[EMAIL PROTECTED] |
| OPQ Systems AB |  WWW:  http://www.opq.se/ |
| Erik Dahlbergsgatan 41-43  |Phone: Int + 46 8   314223 |
| 115 32 Stockholm   |   Mobile: Int + 46 733 621657 |
| Sweden |  Fax: Int + 46 8   302602 |
++===+

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ReiserFS and lost+found

2002-04-23 Thread Kurt Wall

Hallo, list,

Roger asked about ReiserFS and the absence of a lost+found
directory. I have an all ReiserFS system at work and none of the
filesystems have a lost+found directory. This is as of whatever patch
set was necessary for kernel 2.4.5. I don't *think* Reiser uses a
lost+found directory, but you could ask on the Reiser lists at
namesys.com.

Kurt
-- 
Those who can, do.  Those who can't, simulate.
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