![]() | ||||||||||
Messages in this thread |
Mikulas Patocka wrote: > There was discussion about it here some times ago, and I think the > result was that the IDE bus is reset prior to capacitors discharge and > total loss of power and disk has enough time to finish a sector --- but > if you have crap power supply (doesn't signal power loss), crap > motherboard (doesn't reset bus) or crap disk (doesn't respond to reset), > it can fail. > > BTW. reiserfs and xfs depend on this feature too. ext3 is the only one > that doesn't. > > Mikulas Yes, if your disk can not atomically commit a single sector, then it is broken. And ALL filesystems rely on this behavior because they all expect NOT to have hardware IO read failures of important metadata after a power failure ( due to the sector ECC failing ). - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | |||||||||
| Last update: 2006-11-06 01:47 [W:0.430 / U:0.410 seconds] ©2003-2008 Jasper Spaans | ||||||||||