On Thu, 21 Oct 2010, "Boyd Stephen Smith Jr." <b...@iguanasuicide.net> writes: > XFS is the not only file system where power failure can result in a > truncated file. Even ext3 can have that issue, though it is less > likely. > > However, if the application follows a certain procedure when > re-writing files, it will not lose data on any of these file systems. > I suggest that Opera should be fixed to use that procedure. IIRC, this > is a slight variation on the old "two-phase save" that some editors > have used for decades, it simply requires a fsync on the temporary > file. > > BTW, a kill -9 is very different from a power failure or a hard reset. > In the first case, the application is allowed to do it's own cleanup; > the kernel still cleans up after the process -- closing handles to > kernel resources, like file descriptors; and queued tasks, like > delayed allocation and flushing data to disk, can be run at a later > time still. In the later, horrible things happen (e.g. in some systems > the HDs and BUS can run for just long enough to complete a DMA > transfer AFTER the RAM has lost coherency) and no software gets to run > long enough to even detect what is happening, much less put the > hardware in a known good state.
I didn't experience anything similar with reiserfs. (I'm not implying anything, neither defensing reiserfs; just sharing my experience.) Regards. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/87vd4vh61u....@alamut.ozu.edu.tr
