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 -- 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
