On 3 December 2013 14:42, Tom Pfeifer <tpfeife1@xxxxxxxxx> wrote: > On 11/26/2013 06:32 PM, Dmitrijs Ledkovs wrote: >> On 26 November 2013 18:07, David F. <df7729@xxxxxxxxx> wrote: >>> As a workaround to the mdadm issue with the spare drive we were going >>> to have them activate DMRAID but that ends up with the information >>> below. Specifically something about dm-raid45 but we had to drop that >>> because it no longer compiles in the latest kernels and we couldn't >>> find an update that would. Any ideas? (still working on getting the >>> dump - the fact that tmpfs doesn't support sparse files makes having >>> the customer create the dump via a script we provide a bit more >>> involved): >>> >> >> Ubuntu kernels still somewhat maintain and have dm-raid-45 module. >> >> Install linux-image-extra-virtual package which will pull in correct >> versioned packaged with extra modules. >> >> It is planned however to migrate off & drop dm-raid-45 module soon. >> >> ps. latest version I can find is >> 3.8.0-22-generic/kernel/ubuntu/dm-raid4-5/dm-raid45.ko >> >> Regards, >> >> Dmitrijs. > > As a follow up to this general subject, what will replace the dm-raid45 > module after it is dropped? > > I guess another way to ask that question is what functionality does the > dm-raid45 module support that is not currently supported by the dm-raid > module, which has aliases to dm-raid1, dm-raid4, dm-raid5, dmraid6, and > dm-raid10. > > And is it already possible now (in recent kernels such as 3.11.x and > later) to use the dm-raid module in place of dm-raid45? > The current plan is as following: * for ddf & intel matrix raid formats => migrate from dmraid to mdadm (external metadata) (which supports raid levels 4 & 5 for those formats and more) * investigate whether dmraid can be modified to use stock dm-raid modules, instead of the dmraid45 module The first point should cover all but nvidia/dmraid, the second one should resolve the situation completely. Above plan was discussed at the public virtual Ubuntu Developer Summit (video at): http://summit.ubuntu.com/uds-1311/meeting/22028/core-1311-dmraid2mdadm/ The workitems to complete above are tracked on a blueprint at launchpad: https://blueprints.launchpad.net/ubuntu/+spec/core-1311-dmraid2mdadm You can subscribe to the blueprint, if you wish, to get email updates on the progress of this work to get notified when it's ready/available for testing. Regards, Dmitrijs. -- 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
