On Fri, 2009-04-24 at 01:34 +0200, Tomasz Chmielewski wrote: > Chris Mason schrieb: > > >> However, with btrfs, I'm not sure about: > >> > >> - what happens if SAN machine crashes while the iSCSI file images were > >> being written to; with LVM and its block devices, I'm somehow more > >> confident it wouldn't make more data loss than necessary > > > > If iscsi is writing with O_DIRECT|O_SYNC it should work. > > What if it doesn't? > Writes would go to the page cache only (not O_DIRECT) and the metadata wouldn't get flushed with each write (not O_SYNC). -chris -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
