[Bug 100126] Re: Data corruption with ext3 in striped logical volume

2008-07-13 Thread Hew
We are closing this bug report because it lacks the information we need
to investigate the problem, as described in the previous comments.
Please reopen it if you can give us the missing information, and don't
hesitate to submit bug reports in the future. To reopen the bug report
you can click on the current status, under the Status column, and change
the Status back to New. Thanks again!

** Changed in: e2fsprogs (Ubuntu)
   Status: Incomplete = Invalid

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[Bug 100126] Re: Data corruption with ext3 in striped logical volume

2008-06-06 Thread Theodore Ts'o
There's nothing wrong with a swap partition on the RAID.  What I was
suggesting was maybe you were using SWAP on a hard partition which
perhaps overlapped with part of the physical volumes for the RAID.   I'm
not sure, but clearly it sounds like you have corruption showing up on
your LVM device.  Why that is the case is hard to say, but partition
table misconfiguration is certainly one of the possibilities.

Ubuntu is free distribution, which means best efforts support for bug
reports.  If you pay for commercial support (which Canonical may or may
not provide, but certainly companies like Red Hat, Novell, IBM, HP, all
provide), you'll get someone who will respond right away, and say, You
know, this really doesn't like an e2fsprogs bug; and help you determine
whether it's a hardware problem, or maybe a LVM device driver problem,
or maybe a user configuration problem.   To have someone who can do this
well and with a fast response time takes time, and money; training
someone who can diplomatically suggest that maybe the Problem Exists
Between Keyboard And Chair (PEBKAC) without truly pissing off the
customer is difficult, and you pay the really good people who can do OS
root cause problem determination a very good salary.

So here, when a bug report gets filed as an e2fsprogs bug, I as the
upstream volunteer will do a quick scan of the queue, see common themes,
and or things that are clearly bugs, and try to deal with them.
Ubuntu's bug scanning folks don't scan very frequently, and fair enough
--- this is a freebie service for them, and they are primarily focused
on making the distribution better, as opposed to making sure someone
isn't walking away from an expensive 7x24 support contract.

Regards,

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[Bug 100126] Re: Data corruption with ext3 in striped logical volume

2008-06-03 Thread Andreas Schiffer
For the past 14 months nobody cared about this bug, and obviously nobody
tried to reproduce this bug on his system.

So why should I put any effort in checking if the bug is still there? It would 
be major effort for me to reproduce this bug.
And - as far as I can see - the only result would be that for the next 14 
months this bug report would stay Incomplete and without anybody caring about 
it.

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[Bug 100126] Re: Data corruption with ext3 in striped logical volume

2008-06-03 Thread Hewus
You have been the only reporter of this bug, and as you have mentioned,
a year has gone by. Perhaps the bug was fixed in 7.04 release? Maybe it
has been solved in the latest 8.04LTS? You filed this bug as present in
e2fsprogs, and by looking at the changelog since 7.04, a lot has
happened. This is why we ask that you, as the only reporter, please test
if your issue is still present in the latest version. If we cannot
confirm that this issue still exists, then the bug will be closed. If
you find that it is still present in Ubuntu Hardy, then we can mark this
report as confirmed.

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[Bug 100126] Re: Data corruption with ext3 in striped logical volume

2008-06-03 Thread Theodore Ts'o
I very much doubt this was a problem with e2fsprogs, but rather with the
RAID setup.   If e2fsck was doing a full check after doing a journal
replay, it's probably because the kernel had detected a filesystem
consistency problem, and had set the filesystem has an error flag.
The symptoms described sound very much like (a) hardware problems, or
(b) a serious RAID configuration error (i.e., where part of the RAID is
also getting used as a swap device, or something crazy like that).
Given that all of your problems went away when you stopped using LVM,
that makes it HIGHLY (as in 0.001% chance) that it is not an
e2fsprogs problem, since e2fsprogs really doesn't care what the
underlying disk device is.  It (and the kernel filesystem code) only
asks that the disk device be reliable, and what gets stored at a
paticular block address stays stored there.

Part of the reason why no one probably looked at it is because it was
coded as a e2fsprogs bug, and when I, as an unpaid volunteer, looked at
the bug, it was obviously NOT a problem.

I can say that I am using LVM for all of my ext3 filesystem, as do many
Ubuntu users, so if there was a major systemic problem, it would have
been reported by now.  This makes it highly likely that either (a) there
is something specifically unusual about your system or your
configuration, which is why no one else is seeing it, or (b) there is a
hardware problem, or (c) this was some kind of user error.

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[Bug 100126] Re: Data corruption with ext3 in striped logical volume

2008-06-03 Thread Andreas Schiffer
Okay, let me apologize first for my last post sounding too accusing.
Of course nearly all Linux developers are unpaid volunteers, and I can't expect 
that anybody spends his leisure time on reproducing my problems.
I just had the impression that Hewus asked me carelessly to put a lot of effort 
in reproducing the defect without any justified reason that the problem was 
fixed in the meantime.
Sorry for the misunderstanding.

Is a swap partition on the RAID a bad thing to do?
Following the instructions on some web page, I used the whole space on my hard 
disks (except for a small boot partition) for the RAID-LVM, and created a swap 
partition in the LVM with commands like the following:
lvcreate -n swaplv -L 500M volg1
mkswap /dev/volg1/swaplv
swapon /dev/volg1/swaplv

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[Bug 100126] Re: Data corruption with ext3 in striped logical volume

2008-06-02 Thread Hewus
Thank you for taking the time to report this bug and helping to make
Ubuntu better. You reported this bug a while ago and there hasn't been
any activity in it recently. We were wondering if this is still an issue
for you. Can you try with the latest Ubuntu release (Hardy Heron)?
Thanks in advance.

** Changed in: e2fsprogs (Ubuntu)
   Status: New = Incomplete

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[Bug 100126] Re: Data corruption with ext3 in striped logical volume

2008-05-22 Thread Theodore Ts'o
If the problem doesn't show up when you stop using LVM, it's highly
unlikely to be an e2fsprogs bug!

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[Bug 100126] Re: Data corruption with ext3 in striped logical volume

2007-04-02 Thread Brian Murray
** Changed in: e2fsprogs (Ubuntu)
Sourcepackagename: None = e2fsprogs

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