Private bug reported:
Steps to reproduce: 1. Create RAID volume using PreOS environment. 2. Boot to OS. 3. Add additional drive(s) to an IMSM array using command: mdadm --add /dev/imsm0 /dev/sd[a-z] drives with capacity greater or equal smallest drive capacity used in IMSM array 4. Execute grow command on array with additional drives: mdadm --grow /dev/md/imsm0 --raid-devices=N Where N is number of drives after resizing 5. Check if volume on IMSM array was proportionally resized. Expected results: Raid volume after OLCE should have proper size. Actual results: Raid volume size didn’t change after OLCE. This bug is fixed in upstream by few patches. They have to be applied to ubuntu mdadm package. List of necessary patches: "imsm: change reserved space to 4MB" 611d95290dd41d73bd8f9cc06f7ec293a40b819e by Mariusz Dabrowski <[email protected]> "imsm: add functions to get and set imsm dev size" fcc2c9daede11fcc67e4032fd6fa8da198aaa319 by Mariusz Dabrowski <[email protected]> "imsm: pass already existing map to imsm_num_data_members" 9529d3436771d9f38884861683dee3b40ab9d180 by Mariusz Dabrowski <[email protected]> "imsm: do not use blocks_per_member in array size calculations" 444909385fdaccf961308c4319d7029b82bf8bb1 by Mariusz Dabrowski <[email protected]> "imsm: correct num_data_stripes in metadata map for migration" 4a353e6ec48e35437b27978add6cd2cd015f2cfe by Roman Sobanski <[email protected]> All patches are accepted in upstream and pushed: https://git.kernel.org/pub/scm/utils/mdadm/mdadm.git/log/ ** Affects: mdadm (Ubuntu) Importance: Undecided Status: New ** Information type changed from Public to Private -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1781427 Title: [INTEL UBUNTU 18.04/18.10 BUG] Wrong size after OLCE of IMSM Volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mdadm/+bug/1781427/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
