Re: [gentoo-user] planned btrfs conversion: questions

[William Kenworthy <billk@iinet.net.au>]

On 05/11/14 16:53, Mick wrote:
> On Saturday 10 May 2014 10:33:19 William Kenworthy wrote:
>> Note that as I said in my original
>> email, "dirvish" really hammers a file system and only reiserfs seems to
>> withstand it though I have gotten errors with it in the past.  Ive tried
>> ext4 (takes only a couple of backup sessions and its unrecoverable,
>> btrfs an occasional error with two complete losses of the
>> partition/filesystem since Christmas and reiserfs gets rare errors.
> 
> 
> I moved away from reisefs to ext4 because I was getting some random lockups 
> when I/O was high.  While on reiserfs I also had a couple of corrupt mysql 
> files and all around poor performance.  Now, this was on a machine with a 
> deficient PSU (I replaced a couple of capacitors since then and it is now 
> working properly) so I don't want to blame the filesystem because of this 
> hardware problem.  In any case, under these impaired conditions ext4 was a 
> much better performing filesystem than reiserfs.  No lock ups, significantly 
> faster and no corruption was observed in normal operation - I didn't try to 
> hammer it.
> 
> So I read your paragraph above with surprise, because in my experience the 
> opposite was true.  At the time I thought that reiserfs was perhaps suffering 
> from bitrot, because these symptoms had gotten worse over time.  This is on an 
> installation running since 2005.  Not sure what to conclude from these 
> anecdotal observations ...  :-/
> 

Everyone's use case and experience with filesystems seems a bit
different. One reason I am moving from reiserfs is bitrot - I can see
that reiserfs is losing favour.  btrfs has potential ...

BillK