On 6/16/2013 12:47 PM, Sven Wesley wrote: > 2013/6/16 Jon Elson<el...@pico-systems.com>: > >> Dave wrote: >> >>> The drive was formatted EXT4. Linux could not fix the disk problems >>> even after repeated tries. I plugged the drive into a Windows XP system >>> and reformatted the disk expecting it to fail. It took a while to >>> format but it did so cleanly and the Seagate diagnositic software said >>> that all was good! So I imaged the original LinuxCNC system back onto >>> the disk and it has been running fine in my office for over a week >>> now. No flaky operation. So for whatever reason, the EXT4 file >>> system became corrupted in such a way that the Linux system was unable >>> to recover from it, even though the disk itself was still good. That >>> is the first and hopefully the last time I see that problem! >>> >>> >> There's something going on with EXT4 so that it doesn't handle >> uncontrolled system >> shutdowns. At least, that's what I think is going on. A lot of >> BeagleBoard/BeagleBone >> users also report corrupted file systems on SD cards using EXT4, and >> when they >> back off to EXT3, no more problems. I have some embedded devices with >> Beagle >> Boards in them that are usually shut down by just switching the system off >> ungracefully, and had the same problem just a couple of times. Now, on EXT3 >> all seems OK. I can't explain it, but my experience seems to mirror the >> reported >> problems. >> >> Jon >> > Exactly, this sounds like a corrupted file system from a nasty > shutdown (or several). EXT4 is good and fast but isn't - unfortunately > - as stable as EXT3. On a new Lx-distribution it seems to be more > stable than on a bit older version like we use for CNC'ing. > > /S > >
The system the drive was in runs 24x7 unless they have a power outage or they are doing maintenance on the machine. Looks like I need to start using EXT3. Thanks for the info. Dave ------------------------------------------------------------------------------ This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
