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 ------------------------------------------------------------------------------ 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
