Presents the partition layout and configuration when RAID is enabled on the CPM.N/A
CPM-8600 and above can be equipped with more than one disk.
CPM partitions can be configured as follows:
- non-RAID when single hard drive is installed
- RAID-1 is configured by default on systems equipped with two hard drives. RAID-1 may be seen on systems with only one active hard drive (if the second drive fails)
- RAID-0 is only available on systems with two hard drives.
Crossbeam XOS uses Linux software, RAID and a number as well as size of partitions in case of RAID-1 configuration is the same as in case of non-RAID system as explained in solution#1209.
All RAID partitions are named as /dev/mdX devices and mapped to relevant partitions on hard drive.
There are three ways to verify the RAID configuration of a system (RAID-0 or RAID-1)
1). From XOS CLI, by running command:
show module status <cp1|cp2>
This will show status of the module cp1|cp2 including raid status and type:
[cut] RAID Status Active, RAID 1 [cut]
2). From XOS CLI, by running command:
# show module status <cp1|cp2> disk NA = Not Available, DP = Data Plane, CP = Control Plane cp = Control Processor, ap = Application Processor, np = Network Processor
Slot 14: Hard Disk 100(GB) Second Hard Disk 100(GB) Flash N/A Hard Drive Error None Second Hard Drive Error None RAID Status Active, RAID 1
3). Directly from shell level by checking /proc/mdstat
### below example shows system booted from second partition set [CPMROOT]# cat /proc/mdstat Personalities : [raid0] [raid1] read_ahead 1024 sectors Event: 21 md9 : active raid1 sdb9 sda9 104320 blocks [2/2] [UU]
md10 : active raid1 sdb10 sda10 1003904 blocks [2/2] [UU]
md11 : active raid1 sda11 sdb11 1003904 blocks [2/2] [UU]
md12 : active raid1 sdb12 sda12 8008256 blocks [2/2] [UU]