Degraded raid 1

I have raid 1, status degraded, on a D-link DNS323 running the alt-F firmware.
I have run the commands below and think I now need to run:
mdadm --add /dev/md0 /dev/sda2
Any advice will be most welcome.
sfdisk -l -uS
Disk /dev/sda: 97451 cylinders, 255 heads, 63 sectors/track
Warning: The partition table looks like it was made
for C/H/S=*/256/63 (instead of 97451/255/63).
For this listing I'll assume that geometry.
Units = sectors of 512 bytes, counting from 0
Device Boot Start End #sectors Id System
/dev/sda1 1 - 4294967295 ee Intel EFI GUID Partition Table
/dev/sda2 0 - 0 0 Empty
/dev/sda3 0 - 0 0 Empty
/dev/sda4 0 - 0 0 Empty
Disk /dev/sdb: 97451 cylinders, 255 heads, 63 sectors/track
Warning: The partition table looks like it was made
for C/H/S=*/256/63 (instead of 97451/255/63).
For this listing I'll assume that geometry.
Units = sectors of 512 bytes, counting from 0
Device Boot Start End #sectors Id System
/dev/sdb1 1 - 4294967295 ee Intel EFI GUID Partition Table
/dev/sdb2 0 - 0 0 Empty
/dev/sdb3 0 - 0 0 Empty
/dev/sdb4 0 - 0 0 Empty
more /etc/mdadm.conf
ARRAY /dev/md/0 metadata=1.2 UUID=59691fcb:f60641ea:8008509f:b752ed83 name=dlink-and:0
DEVICES /dev/sd*
cat /proc/mdstat
Personalities : [linear] [raid1]
md0 : active raid1 sdb2[2]
2929741087 blocks super 1.2 [2/1] [_U]
bitmap: 8/22 pages [32KB], 65536KB chunk
unused devices:
mdadm --detail /dev/md0
/dev/md0:
Version : 1.2
Creation Time : Sat Mar 16 23:54:30 2013
Raid Level : raid1
Array Size : 2929741087 (2794.02 GiB 3000.05 GB)
Used Dev Size : 2929741087 (2794.02 GiB 3000.05 GB)
Raid Devices : 2
Total Devices : 1
Persistence : Superblock is persistent
Intent Bitmap : Internal
Update Time : Wed Jan 12 01:14:11 2022 State : active, degraded
Active Devices : 1
Working Devices : 1
Failed Devices : 0
Spare Devices : 0
Name : dlink-and:0 (local to host dlink-and) UUID : 59691fcb:f60641ea:8008509f:b752ed83 Events : 28427 Number Major Minor RaidDevice State 0 0 0 0 removed 2 8 18 1 active sync /dev/sdb2
Comments
-
mdadm --add /dev/md0 /dev/sda2 worked fine:
mdadm --detail /dev/md0
/dev/md0:
Version : 1.2
Creation Time : Sat Mar 16 23:54:30 2013
Raid Level : raid1
Array Size : 2929741087 (2794.02 GiB 3000.05 GB)
Used Dev Size : 2929741087 (2794.02 GiB 3000.05 GB)
Raid Devices : 2
Total Devices : 2
Persistence : Superblock is persistentIntent Bitmap : Internal
Update Time : Mon Jan 17 18:23:24 2022 State : active
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0Name : dlink-and:0 (local to host dlink-and) UUID : 59691fcb:f60641ea:8008509f:b752ed83 Events : 28568 Number Major Minor RaidDevice State 0 8 2 0 active sync /dev/sda2 2 8 18 1 active sync /dev/sdb2
0
Categories
- 9.9K All Categories
- 29 LFX Mentorship
- 82 LFX Mentorship: Linux Kernel
- 465 Linux Foundation Boot Camps
- 266 Cloud Engineer Boot Camp
- 94 Advanced Cloud Engineer Boot Camp
- 43 DevOps Engineer Boot Camp
- 29 Cloud Native Developer Boot Camp
- 1 Express Training Courses
- 1 Express Courses - Discussion Forum
- 1.6K Training Courses
- 18 LFC110 Class Forum
- 4 LFC131 Class Forum
- 19 LFD102 Class Forum
- 132 LFD103 Class Forum
- 9 LFD121 Class Forum
- 60 LFD201 Class Forum
- LFD210 Class Forum
- 1 LFD213 Class Forum - Discontinued
- 128 LFD232 Class Forum
- 23 LFD254 Class Forum
- 544 LFD259 Class Forum
- 100 LFD272 Class Forum
- 1 LFD272-JP クラス フォーラム
- 1 LFS145 Class Forum
- 20 LFS200 Class Forum
- 739 LFS201 Class Forum
- 1 LFS201-JP クラス フォーラム
- 1 LFS203 Class Forum
- 36 LFS207 Class Forum
- 295 LFS211 Class Forum
- 53 LFS216 Class Forum
- 45 LFS241 Class Forum
- 39 LFS242 Class Forum
- 33 LFS243 Class Forum
- 10 LFS244 Class Forum
- 27 LFS250 Class Forum
- 1 LFS250-JP クラス フォーラム
- 131 LFS253 Class Forum
- 964 LFS258 Class Forum
- 10 LFS258-JP クラス フォーラム
- 85 LFS260 Class Forum
- 124 LFS261 Class Forum
- 29 LFS262 Class Forum
- 78 LFS263 Class Forum
- 15 LFS264 Class Forum
- 10 LFS266 Class Forum
- 17 LFS267 Class Forum
- 16 LFS268 Class Forum
- 14 LFS269 Class Forum
- 194 LFS272 Class Forum
- 1 LFS272-JP クラス フォーラム
- 206 LFW211 Class Forum
- 148 LFW212 Class Forum
- 890 Hardware
- 212 Drivers
- 74 I/O Devices
- 44 Monitors
- 115 Multimedia
- 206 Networking
- 99 Printers & Scanners
- 85 Storage
- 747 Linux Distributions
- 88 Debian
- 64 Fedora
- 13 Linux Mint
- 13 Mageia
- 24 openSUSE
- 133 Red Hat Enterprise
- 33 Slackware
- 13 SUSE Enterprise
- 354 Ubuntu
- 468 Linux System Administration
- 38 Cloud Computing
- 67 Command Line/Scripting
- Github systems admin projects
- 93 Linux Security
- 77 Network Management
- 107 System Management
- 48 Web Management
- 61 Mobile Computing
- 22 Android
- 25 Development
- 1.2K New to Linux
- 1.1K Getting Started with Linux
- 525 Off Topic
- 127 Introductions
- 211 Small Talk
- 19 Study Material
- 782 Programming and Development
- 256 Kernel Development
- 492 Software Development
- 919 Software
- 255 Applications
- 181 Command Line
- 2 Compiling/Installing
- 76 Games
- 316 Installation
- 46 All In Program
- 46 All In Forum
Upcoming Training
-
August 20, 2018
Kubernetes Administration (LFS458)
-
August 20, 2018
Linux System Administration (LFS301)
-
August 27, 2018
Open Source Virtualization (LFS462)
-
August 27, 2018
Linux Kernel Debugging and Security (LFD440)