I stumbled upon this bug when erasing USB-key with Startup Disk Creator, and found out following:
These commands consume 100% CPU: /usr/lib/udisks/udisks-daemon udisks-helper-modify-partition /dev/sdb 1048576 7962886144 0x0c boot When stracing processes of those commands, both are stuck printing couple of strings over and over again: "Error: Can't have a partition outside the disk!\nnew_size=7962886144 but resulting size, 7961022464, smaller than requested\n" I'll be happy to provide more information if needed. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-disk-utility in Ubuntu. https://bugs.launchpad.net/bugs/689593 Title: 2x100% CPU and memory usage growth when performing partition modifications via udisks Status in abstraction for enumerating and managing block devices: New Status in “gnome-disk-utility” package in Ubuntu: Confirmed Status in “usb-creator” package in Ubuntu: Confirmed Bug description: When unsetting the bootable flag on a partition using palimpsest, the following things happen: - udisks-helper-modify-partition and udisks-daemon processes use 100% CPU each - udisks-daemon chews about 18MiB of memory each second This problem exists regardless of whether the partition is mounted or not. natty gnome-disk-utility 2.32.1-0ubuntu3 udisks 1.0.2-1 To manage notifications about this bug go to: https://bugs.launchpad.net/udisks/+bug/689593/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

