On Mon, 2009-02-02 at 09:42 +0100, Fernando Martins wrote: > W.Kenworthy wrote: > > I have to disagree here - because my own opinion is that ext2/3 are not > > the best for every purpose, and are demonstrably a poor choice for OSM > > maps on an SD card for instance. > > Last I heard reiserfs3 is still being maintained, and it has some real > > advantages for OSM maps (reiserfs doesnt have inode limits like ext2/3 > > does), and is much faster (against ext3). > Well, I've seen often claims as yours (and never recall the opposite) > and it is also my subjective perception, using regularly a system with > ext2 and reiserfs in two partitions of the same hard disk. I made my > choice base on space usage. I'll look for some benchmarks on performance > later on. > > > ...There is a certain amount of YMMV with file system choices depending on > > your usage scenarios, but personally I would really like to use reiserfs > > and dump ext2/3 and all the problems they cause on the FR (lost > > data/corrupted filesystems, slow performance, ...) that I have. > > > > > I would not expect to read about ext3 corruptions?? I know it doesn't do > checksums after saving blocks in the disk, but is reiserfs doing it? > > > Regards, > Fernando
This is not read on someones website - but my own real world experience - ext2/3 actually loses data on a regular basis in some scenarios (like >100000 OSM maps on an SD card which is relevant here :). I am using data=journal which I understand should give more protection with some penalty in speed, but it still happens. I did read a recent post about how fast ext2/3/4 is and the fact came out that they default to minimum protection to ensure good speed - while most other file systems are biased for protection. When in an oranges/oranges scenario, ext4 (I think) was pulled back to the bunch. I have not heard of any tests on the safest settings and rankings on filesystems - not sure they would be useful as there is a very wide variety of usage scenarios where one would be better than others. So my favouring reiserfs is because while I have had problems at times, they are far less intrusive that losing whole systems and data that have happened to me using ext2 or ext3. BillK _______________________________________________ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
