mdadm DegradedArray, 소프트웨어 문제입니까 아니면 하드웨어 결함입니까?

내 호스팅 제공업체의 전용 서버에서 모든 RAID 어레이 md0/md1/md2에 대해 다음 이메일을 받았습니다.

This is an automatically generated mail message from mdadm running on cn.com
> `This is an automatically generated mail message from mdadm running on
> example.com
> 
> A DegradedArray event had been detected on md device /dev/md/2.
> 
> Faithfully yours, etc.
> 
> P.S. The /proc/mdstat file currently contains the following:
> 
> Personalities : [raid1] [linear] [multipath] [raid0] [raid6] [raid5]
> [raid4] [raid10] md2 : active raid1 nvme0n1p3[0]
>       903479616 blocks super 1.2 [2/1] [U_]
>       bitmap: 7/7 pages [28KB], 65536KB chunk
> 
> md0 : active raid1 nvme0n1p1[0]
>       33520640 blocks super 1.2 [2/1] [U_]
>        md1 : active raid1 nvme0n1p2[0]
>       523264 blocks super 1.2 [2/1] [U_]
>        unused devices: <none> `

이것이 RAID 동기화 문제인지, 아니면 하드 드라이브에 실제로 결함이 있는지는 모르겠습니다. Linux 전문가의 도움을 바랍니다.

두 개의 NVME Samsung 장치가 소프트웨어 raid mdadm으로 실행되고 있습니다.

$ fdisk -l
nvme1n1     259:0    0 894.3G  0 disk
├─nvme1n1p1 259:2    0    32G  0 part
├─nvme1n1p2 259:3    0   512M  0 part
└─nvme1n1p3 259:4    0 861.8G  0 part
nvme0n1     259:1    0 894.3G  0 disk
├─nvme0n1p1 259:5    0    32G  0 part
│ └─md0       9:0    0    32G  0 raid1 [SWAP]
├─nvme0n1p2 259:6    0   512M  0 part
│ └─md1       9:1    0   511M  0 raid1 /boot
└─nvme0n1p3 259:7    0 861.8G  0 part
  └─md2       9:2    0 861.6G  0 raid1 /

목록에서 볼 수 있듯이 nvme1n1과 해당 파티션은 raid 그룹에 없습니다. 분명히 nvme1n1은 운영 체제에서도 인식됩니다.

$ dmesg 
[ 7664.380493] pcieport 0000:00:1b.4: AER: Corrected error received: 0000:00:1b.4
[ 7664.380514] pcieport 0000:00:1b.4: AER: PCIe Bus Error: severity=Corrected, type=Physical Layer, (Receiver ID)
[ 7664.380795] pcieport 0000:00:1b.4: AER:   device [8086:a32c] error status/mask=00000001/00002000
[ 7664.381066] pcieport 0000:00:1b.4: AER:    [ 0] RxErr
[ 7664.780438] pcieport 0000:00:1b.4: AER: Corrected error received: 0000:00:1b.4
[ 7664.780459] pcieport 0000:00:1b.4: AER: PCIe Bus Error: severity=Corrected, type=Physical Layer, (Receiver ID)
[ 7664.780739] pcieport 0000:00:1b.4: AER:   device [8086:a32c] error status/mask=00000001/00002000
[ 7664.781011] pcieport 0000:00:1b.4: AER:    [ 0] RxErr

lspci두 개의 NVME 장치 표시

$lspci
01:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller SM981/PM981/PM983
03:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller SM981/PM981/PM983

예를 들어 md0에 대한 mdadm 세부 정보를 확인하세요.

mdadm -D /dev/md0
/dev/md0:
           Version : 1.2
     Creation Time : Sat Aug  7 19:34:45 2021
        Raid Level : raid1
        Array Size : 33520640 (31.97 GiB 34.33 GB)
     Used Dev Size : 33520640 (31.97 GiB 34.33 GB)
      Raid Devices : 2
     Total Devices : 1
       Persistence : Superblock is persistent

       Update Time : Fri Mar  4 17:42:37 2022
             State : clean, degraded
    Active Devices : 1
   Working Devices : 1
    Failed Devices : 0
     Spare Devices : 0

Consistency Policy : resync

              Name : rescue:0
              UUID : 2e61cb41:dee3a004:b12de575:72c13ed0
            Events : 46

    Number   Major   Minor   RaidDevice State
       0     259        2        0      active sync   /dev/nvme0n1p1
       -       0        0        1      removed

여기에는 /dev/nvme1n1p1 장치가 표시되지 않습니다. 이것이 나에게 무엇을 의미합니까?

내 mdadm.conf 파일

# mdadm.conf
#
# !NB! Run update-initramfs -u after updating this file.
# !NB! This will ensure that initramfs has an uptodate copy.
#
# Please refer to mdadm.conf(5) for information about this file.
#

# by default (built-in), scan all partitions (/proc/partitions) and all
# containers for MD superblocks. alternatively, specify devices to scan, using
# wildcards if desired.
#DEVICE partitions containers

# automatically tag new arrays as belonging to the local system
HOMEHOST <system>

# instruct the monitoring daemon where to send mail alerts
MAILADDR root

# definitions of existing MD arrays
ARRAY /dev/md/0  metadata=1.2 UUID=2e61cb41:dee3a004:b12de575:72c13ed0 name=rescue:0
ARRAY /dev/md/1  metadata=1.2 UUID=455ba7de:599eb665:202c1fe8:33c709f4 name=rescue:1
ARRAY /dev/md/2  metadata=1.2 UUID=c1f88478:e4ed5e8d:56f296cc:38e97b8c name=rescue:2
ARRAY /dev/md/0  metadata=1.2 UUID=e8c8f0cb:91007124:62e03226:94a707dc name=rescue:0
ARRAY /dev/md/1  metadata=1.2 UUID=a335efb7:cc52634c:3221294c:e7feb748 name=rescue:1
ARRAY /dev/md/2  metadata=1.2 UUID=f2a13b49:17f5e812:8e7c5adf:3114a929 name=rescue:2

# This configuration was auto-generated on Sat, 07 Aug 2021 19:35:14 +0200 by mkconf

당신이 나를 도울 수 있기를 바랍니다