Lenovo ThinkAgile CP, Hardware Part Replacement And Component Maintenance Procedures

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Name : any:md5
UUID : 5f7b873c:16d6d418:7b5f6fde:247566a7
Events : 162
Number Major Minor RaidDevice State
0
253 0 0 active sync /dev/dm-0
1 253 1 1 active sync /dev/dm-1
2 253 2 2 active sync /dev/dm-2
7 253 7 3 spare rebuilding /dev/dm-7
4 253 4 4 active sync /dev/dm-4
5 253 5 5 active sync /dev/dm-5
6 253 6 6 active sync /dev/dm-6
3 253 3 - faulty /dev/dm-3
In this example,
dm-3
is marked as failed (
dm-3[3](F)
).
To remove a drive from the RAID array, follow these steps:
Step 1. Determine the SED mapping for
dm-3
:
# # llss --ll //d deevv//m maap pp peerr//sseed d**
Following is an example output:
lrwxrwxrwx. 1 root root 7 Aug 20 11:03 /dev/mapper/sed0 -> ../dm-0
lrwxrwxrwx. 1 root root 7 Aug 20 11:03 /dev/mapper/sed1 -> ../dm-1
lrwxrwxrwx. 1 root root 7 Aug 20 11:03 /dev/mapper/sed2 -> ../dm-2
lrwxrwxrwx. 1 root root 7 Aug 20 11:03 /dev/mapper/sed3 -> ../dm-3
lrwxrwxrwx. 1 root root 7 Aug 20 11:03 /dev/mapper/sed4 -> ../dm-4
lrwxrwxrwx. 1 root root 7 Aug 20 11:03 /dev/mapper/sed5 -> ../dm-5
lrwxrwxrwx. 1 root root 7 Aug 20 11:03 /dev/mapper/sed6 -> ../dm-6
lrwxrwxrwx. 1 root root 7 Aug 20 11:03 /dev/mapper/sed7 -> ../dm-7
In this example,
dm-3
is mapped to
sed3
.
Step 2. Determine the NVME namespace — SDE drive mapping for
sd3
:
# # ccrryyp pttsseettu up p ssttaattu uss //d deevv//m maap pp peerr//sseed d3 3
Following is an example output:
/dev/mapper/sed3 is active and is in use.
type: LUKS1
cipher: aes-xts-plain64
keysize: 512 bits
device: /dev/nvme3n1
offset: 4096 sectors
size: 1552723968 sectors
mode: read/write
The output displays the following information:
•
sed3
is an encrypted device mapped to
/dev/nvme3n1
•
/dev/nvme3n1
is a namespace associated with
/dev/nvme3
Chapter 5
.
Part replacement and maintenance procedures
47