Re: [reiserfs-list] Data corruption on 2.4.8 Production system

[Christian Stuke]

- Original Message -
From: <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, September 07, 2001 7:15 PM
Subject: [reiserfs-list] Data corruption on 2.4.8 Production system


>
> Hi everyone,
>
> I've just recently upgraded from 2.4.1 with ReiserFS utils a to 2.4.8
> ReiserFS utils j.
That was NO good idea imho! :)
We had severe problems with in production systems with 2.4.8! Even the ac
Series Patches didn't help!
I recommend 2.4.9-ac7 which has proven to survive a little longer than
2.4.8...
Well ok we use it in production server kernel rpms and it is the first 2.4 I
kinda trust :-)
Ymmv ... We are using it on:
1) News Server with 2MBit Feed (No problems)
2) Web Server Cluster (Well nfs lockups and other fuckups but i suspect the
perl stuff running there not reiserfs)
3) Backup Server (No problems ... backups are compared back so no
corruption)
4) Customer Firewalls and Mailservers
Some dozen Servers ... No corruption (Some with reiserfs 3.5 (made with
3.5.32)) no Corruptions.

> Things went well, although I haven't been able to convert my filesystems
> from 3.5. to the new 3.6 yet.
I'd REDO not convert the fs!

> Anyhow, I'm seeing data corruption and my box has frozen twice!  The
server
> is a very active centralized syslog server.
Use 2.4.9ac7 and redo the filesystem with reiserfs 3.6 ...

> Any suggestions?  Please help, this a production system.
...

Hope I could help.

Chris

Re: [reiserfs-list] fsync() Performance Issue

[Christian Stuke]

Could we have this for 2.4.18+ pending also please?

Chris
- Original Message -
From: "Oleg Drokin" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Tuesday, April 30, 2002 4:20 PM
Subject: Re: [reiserfs-list] fsync() Performance Issue


> Hello!
>
> On Fri, Apr 26, 2002 at 04:28:26PM -0400, [EMAIL PROTECTED] wrote:
> > I'm wondering if anyone out there may have some suggestions on how
> > to improve the performance of a system employing fsync(). I have to be
able
> > to guaranty that every write to my fileserver is on disk when the client
has
> > passed it to the server. Therefore, I have disabled write cache on the
disk
> > and issue an fsync() per file. I'm running 2.4.19-pre7, reiserfs 3.6.25,
> > without additional patches. I have seen some discussions out here about
> > various other "speed-up" patches and am wondering if I need to add these
to
> > 2.4.19-pre7? And what they are and where can I obtain said patches?
Also,
> > I'm wondering if there is another solution to syncing the data that is
> > faster than fsync(). Testing, thusfar, has shown a large disparity
between
> > running with and without sync.Another idea is to explore another
filesystem,
> > but I'm not exactly excited by the other journaling filesystems out
there at
> > this time. All ideas will be greatly appreciated.
>
> Attached is a speedup patch for 2.4.19-pre7 that should help your fsync
> operations a little. (From Chris Mason).
> Filesystem cannot do very much at this point unfortunatelly, it is ending
up
> waiting for disk to finish write operations.
>
> Also we are working on other speedup patches that would cover different
areas
> of write perfomance itself.
>
> Bye,
> Oleg
>