On Mon, 2018-07-09 at 15:33 +0200, Gandalf Corvotempesta wrote: > Il giorno lun 9 lug 2018 alle ore 15:01 Michael Niewöhner > <linux@xxxxxxxxxxxxxx> ha scritto: > > I think both problems can be solved by keeping track of used blocks by upper > > layer in a bitmap-like structure in metadata. That bitmap needs to be > > redundant > > just as the data. I don't know from memory if metadata is redundant or per- > > disk. > > raid-bitmap / write-intent bitmap does something like that but in-memory - > > we > > need our bitmap to be on disk(s). > > Why not integrating extX and XFS (the most used FS in Linux) with mdadm ? > ext4, in example, is able to read the "badblock" output and create the > FS without using them. > Something similiar could be done with extX/XFS allowing the FS to > write the used blocks to a > dedicated area in the array What do you mean by "write the used blocks to a dedicated area"? Linux raid does not care about upper layers like filesystem / luks ... -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
