[Digikam-devel] I HATE EXT4

[Matthias Welwarsky]

I always use ext3. Not the fastest, but most reliable. reiserfs - got bitten 
too often by it. data loss if your hardware isn't 100% reliable (which is 
normal).

On Friday 19 June 2009 13:42:40 Andi Clemens wrote:
> I could restore all my data now... but I'm not sure if I want to keep ext4.
> About Git: well I do backups every day, 10 or 20 times :D
> Its fast if you rsync to a harddisk, takes only 30 seconds most of the
> time.
>
> For me SVN is much more unsafe. What if the server crashes and backup
> fails, too?
> Then all the sourcecode of KDE for example is gone. With GIT, everyone has
> the complete repository of the project on his computer.
> So if 1000 guys would work on digikam, we would have 1000 backups ;-)
>
> When I'm away from home and there is no internet connection, I still can
> commit stuff locally. With SVN this is not possible. Try to work on 5 big
> things simultanously, this is a pain with SVN.
>
> With Git I have a branch for every patch I do and can easily switch between
> them.
>
> Well anyway this is not about Git vs SVN (Git will win this anyway, in
> every way ;-)).
>
> Andi
>
> On Friday 19 June 2009 13:32:01 Gilles Caulier wrote:
> > Too bad.
> >
> > I recommend you to take another look to reiserfs. Here i use it on all
> > computers in production (around 20)
> >
> > and i have never lost data. never. it's very robust.
> >
> > To be clear, generally around august, during holidays, all computers
> > still on. it's critic period because nobody still there at work, only
> > few guardians.
> >
> > In August, a lots of storms break power supply. We have power safe for
> > one hour, but in few case it's not enough. Until this year, we don't
> > have no mechanism to shutdown computers properlly. More than on time i
> > can see computer stopped in live as well, with important data shared
> > on the network. Of course we have automatic backup, but it can be long
> > to restore.
> >
> > Never, i can said never, i see data lost. Computer restart  and
> > process HDD check. Sometime, i need to switch in command line during
> > start-up and run manually reiser-fsck program on the right partitions.
> > That all.
> >
> > Another experience have be done with an old laptop (now dead (:=))).
> > during a long time have see random crashes and dysfunctions with only
> > one way to restart computer : remove battery and use power supply
> > instead. I never lost data.
> >
> > About commit and other stuff : I never use git to make local branch :
> > it's dangerous. I prefer to use remote repository and commit, commit
> > and commit. I never lost data.
> >
> > I work with more than one computer, and sometime, at the same time.
> > It's the hell to work. use only one remote and common repository is
> > the safe way.
> >
> > This is why, i recommend to use home development branches in KDE svn.
> > It simple and safe. Of course making backup from your computer can
> > help, but it can take time. svn ci can take 2 seconds. no more.
> >
> > Just my experience (:=)))
> >
> > Gilles
> >
> > 2009/6/19 Andi Clemens <andi.clemens at gmx.net>:
> > > Hi,
> > >
> > > ok that's it! I will never ever touch this filesystem in my life. After
> > > having some trouble over the last months, today was the day I really
> > > had a fucked up system.
> > > I suspend my laptop over night. As I resumed this morning, my EXT4
> > > media partition was nearly empty. All my music was gone, my images, my
> > > source codes, everything. Some folders were still there, nearly 34GB of
> > > data was gone. I had made a backup the evening before, so I thought I
> > > will try to restore the data. But it isn't working. I get IO-Errors all
> > > the time, saying that it can't access some specific folders on the
> > > "broken" ext4 partition.
> > > I ran fsck, and a badsector check, too. Nothing.... all seems to be
> > > fine. I finally deleted all files on this partition and started rsync
> > > again: IO- Error: can't access the folder (although they were deleted).
> > > I guess the INode-Table is broken or some other ext4 information, but I
> > > don't want to give it another try.
> > >
> > > I don't trust any extX filesystem now. This is really a problem because
> > > I don't like reiserfs, either, only on /var for my package manager. Oh
> > > before anyone mentions this: I used nodelalloc in fstab as well as
> > > barriers=0 and noatime.
> > > But still I have this massive data loss. How is this even possible? I
> > > couldn't have 34GB opened so that a missing flush will fill those files
> > > with zeros. And why can't I access the folder anymore, even when I
> > > delete and recreate it?
> > >
> > > It seems that ext4 doesn't like suspend to ram, because sometimes I
> > > rebooted my machine and it always told me that the filesystem contains
> > > errors on startup.
> > > But I never had such problems with ext3 and JFS.
> > >
> > > I hope I can restore my system and don't lose too much data now, but
> > > for me EXT4 is dead... Hope you guys never experience this...
> > >
> > > I think I need some time before I can get productive again here, my
> > > sourcecodes are gone, too... and unfortunately I had not committed
> > > everything yet.
> > >
> > > Damn it I'm f****ng angry right now. I never had such a data loss in my
> > > life, even Windows was more stable.
> > > How can they say ext4 is good enough to use it productively? I read
> > > such comments over and over now, and today I had the same experience...
> > >
> > > Andi
> > >
> > >
> > >
> > > _______________________________________________
> > > Digikam-devel mailing list
> > > Digikam-devel at kde.org
> > > https://mail.kde.org/mailman/listinfo/digikam-devel
> >
> > _______________________________________________
> > Digikam-devel mailing list
> > Digikam-devel at kde.org
> > https://mail.kde.org/mailman/listinfo/digikam-devel
>
> _______________________________________________
> Digikam-devel mailing list
> Digikam-devel at kde.org
> https://mail.kde.org/mailman/listinfo/digikam-devel