> I know nothing about journalling file systems or how well they limit the > critical sections of time where the file system is exposed to corruption > from sudden power failure. Its an interesting question though. A properly written journalling file system has no critical sections. The only things it relies upon are - store ordering in the drive working properly - a single disk block write being atomic the former is well specified even for ATA devices, the latter is a pretty safe property of rotating media, although in theory you have a finite chance of getting a bad sector. For flash it's a lot lot more complicated but for a flash device claiming to be ATA compliant you ought to get ATA behaviour. All that said there is still (as ever) a tiny chance your system may malfunction. It's all down to probabilities and if your laptop explodes you need a backup (trust me, I've tested this case). Alan _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
