My apologies for the first post. I seem to have pasted a copy of the
post within itself.
The post should read as follows:
Following are my DMRAID test results on a Debian Testing Virtual Machine.
Test Setup:
Debian 8 Jessie Testing (updated to latest packages)
Parted 3.1.90
GParted 0.19.1 configured with: --enable-libparted-dmraid
and --enable-online-resize
1) Create two 1 GB disks in Virtual Machine (sdc and sdd)
2) Create Intel Software RAID
# dmraid -f isw -C MyRaid1 --type 1 --disks /dev/sdc,/dev/sdd
3) Reboot
4) List dmraid device paths
# ls -l /dev/mapper
total 0
crw------- 1 root root 10, 236 Jul 26 10:57 control
brw-rw---- 1 root disk 254, 0 Jul 26 10:57 isw_ebcdedbibh_MyRaid1
5) Run GParted, create msdos partition table, create 128 MiB
ext4 partition, and apply operations.
SUCCESS!
GParted works correctly with newly created
isw_ebcdedbibh_MyRaid1p1 partition and reads the file system usage
details.
6) List dmraid device paths
# ls -l /dev/mapper
total 0
crw------- 1 root root 10, 236 Jul 26 10:57 control
brw-rw---- 1 root disk 254, 0 Jul 26 10:59 isw_ebcdedbibh_MyRaid1
lrwxrwxrwx 1 root root 7 Jul 26 11:00 isw_ebcdedbibh_MyRaid1p1 ->
../dm-1
# ls -l /dev/dm-*
brw-rw---- 1 root disk 254, 0 Jul 26 10:57 /dev/dm-0
brw-rw---- 1 root disk 254, 1 Jul 26 11:00 /dev/dm-1
7) Reboot
8) List dmraid device paths
# ls -l /dev/mapper
total 0
crw------- 1 root root 10, 236 Jul 26 11:02 control
brw-rw---- 1 root disk 254, 0 Jul 26 11:02 isw_ebcdedbibh_MyRaid1
brw-rw---- 1 root disk 254, 1 Jul 26 11:02 isw_ebcdedbibh_MyRaid11
NOTE: Missing 'p' in partition device path.
9) Start GParted.
GParted cannot read partition details.
Suspected reason:
isw_ebcdedbibh_MyRaid1p1 <-- what libparted expects
isw_ebcdedbibh_MyRaid11 <-- what dmraid actually created
To summarize, parted-3.1.90 fixes a previous problem with creating the
partition device entry in /dev/mapper.
However, there still appears to be a disconnect between the naming
method used by the dmraid package, versus the normal naming standard
used by libparted.
Current dmraid package partition naming method:
Always append partition number to device name.
Parted 3.1.90 normal partition naming standard:
If device name ends in a letter
then append partition number to device name
Else if device name ends in a number
then append 'p' plus the partition number to device name
From my experience the naming standard used by parted 3.1.90 is the
commonly used naming standard by GNU/Linux. The dmraid partition
naming method is non-standard.
Please let me know if you require additional dmraid testing.
Regards,
Curtis
