I hit this performance bug when I cloneda 40G NTFS partition. The actual
copy was done in under 11 minutes. After that I was shocked to find that
gparted would spend over 12 minutes in cleanup_cursor, pegging a CPU
core. (On a quad core desktop...)
Simply replacing the ustring with std::string would reduce the time to
about 1.5 minutes. Still bad. Also, I didn't want to lose UTF8
awareness.
So I rewrote the algorithm in 'streaming mode'. This has the (potential)
drawback that locale conversions are done, but performs well and
- IMHO - is a lot more readable.
On a minor note: this implementation correctly handles backspaces at the
start of a line.
Change spawn_command_line_sync to spawn_sync to reduce the level of
quoting required when passing commands to the function. Since
spawn_command_line_sync uses the parent's environment, the replacement
call also uses the parent's environment.
This change permits unmounting of file systems mounted with an
apostrophe in the mount point name.
Ubuntu launchpad bug 151796 - Can't unmount partition with apostrophe
in label
https://bugs.launchpad.net/ubuntu/+source/gparted/+bug/151796
Usage of the kpartx package to create partition names has been
completely removed. Hence kpartx is no longer even an optionally used
package by gparted.
This change is related to the following bug report:
Ubuntu launchpad bug 719129 - [Natty] Gparted duplicates dmraid
partition devices
https://bugs.launchpad.net/ubuntu/+source/gparted/+bug/719129
The new configure option --enable-libparted-dmraid enables the native
use of /dev/mapper dmraid support in the libparted library.
If this option is not specified, or is disabled, then gparted code
will be used to support dmraid. The gparted code uses the old dmraid
partition naming scheme of always appending the partition number to
the device name. The letter 'p' is not inserted between the device
name and the partition number. The gparted code is particularly
useful when used with older versions of libparted that do not support
/dev/mapper dmraid.
Ubuntu launchpad bug 719129 - [Natty] Gparted duplicates dmraid
partition devices
https://bugs.launchpad.net/ubuntu/+source/gparted/+bug/719129
Gabor Kelemen