Created attachment 653487 [details] experimental patch Description of problem: We need to be able to set start and end partition sector address when creating a a partition, for example as parameter of PartitionDevice.__init__(..., start=None, end=None). Version-Release number of selected component (if applicable): anaconda-18.28-1.fc18.x86_64 I got experimental patch from David Lehman (attached), which was working on F17, but I cannot find it upstream.
In addition, I'd like to have either possibility to specify unaligned partition start/end or get best *working* region for given partition size. There is pyanaconda.storage.partitioning.getBestFreeSpaceRegion, but it returns unaligned region and PartitionDevice.__init__(...,start, end) fails. Example: I have one huge partition over whole device: Disk /dev/sda: 1074MB Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 1049kB 1073MB 1072MB primary If I ask for 900 kB partition, getBestFreeSpaceRegion finds place at the start, between MBR (sector 1) and start of the large partition. But if I put these addresses to PartitionDevice.__init__, it later fails. What I want is getBestFreeSpaceRegion (or similar function) to return something that PartitionDevice.__init__ accepts. It really does not matter if the fix is getBestFreeSpaceRegion returning aligned regions or PartitionDevice.__init__ accepting unaligned ones. Jan
With dlehman we've agreed that's simple and will be available in F19 (at least the exact partition location). Non-aligned partition or getBestFreeSpaceRegion() returning aligned geometry can be done later.
I got this working today, and will send patches early next week. There are some limitations that should be noted. First, any partition with an explicitly-specified start sector will not be aligned or adjusted in any way. Second, any partition for which start/end sectors are specified must be constrained to a single disk.
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