저는 Debian Jessie를 사용하여 맞춤형 NAS를 구축하고 있습니다. 소프트웨어 RAID5 구성의 4TB 하드 드라이브 3개가 있습니다. 세 개의 드라이브가 모두 있으면 완벽하게 작동합니다.
드라이브에 문제가 발생하여 성능이 저하된 상태에서 시스템을 부팅할 수 있으면 어떻게 되는지 테스트하려고 합니다. 드라이브를 분리하고 컴퓨터를 부팅하려고 하면 grub에서 다음이 표시됩니다.
Unable to find LVM volume system/root
Volume group "system" not found
Skipping volume group system
마침내 grub은 포기하고 나를 initramfs 쉘에 떨어뜨렸습니다.
세 드라이브 모두의 파티션은 다음과 같습니다.
$ sudo parted /dev/sda print
Model: ATA ST4000VN000-1H41 (scsi)
Disk /dev/sda: 4001GB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Disk Flags:
Number Start End Size File system Name Flags
1 1049kB 2097kB 1049kB bios_grub
2 2097kB 4001GB 4001GB raid
이것이 내 RAID 설정입니다 ...
$ sudo mdadm --detail /dev/md0
/dev/md0:
Version : 1.2
Creation Time : Tue Jun 30 12:56:49 2015
Raid Level : raid5
Array Size : 7813769216 (7451.79 GiB 8001.30 GB)
Used Dev Size : 3906884608 (3725.90 GiB 4000.65 GB)
Raid Devices : 3
Total Devices : 3
Persistence : Superblock is persistent
Intent Bitmap : Internal
Update Time : Wed Jul 1 14:37:11 2015
State : clean
Active Devices : 3
Working Devices : 3
Failed Devices : 0
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 512K
Name : kai:0 (local to host kai)
UUID : 2743ad66:6b1df25a:5c41ca14:19084f56
Events : 10286
Number Major Minor RaidDevice State
0 8 2 0 active sync /dev/sda2
1 8 18 1 active sync /dev/sdb2
2 8 34 2 active sync /dev/sdc2
논리 볼륨 설정...
$ sudo lvdisplay
--- Logical volume ---
LV Path /dev/system/root
LV Name root
VG Name system
LV UUID 1A55Kr-IR4x-O1Z8-YXFj-BvUJ-PMcs-uRjEsv
LV Write Access read/write
LV Creation host, time kai, 2015-06-30 12:57:39 -0400
LV Status available
# open 1
LV Size 29.80 GiB
Current LE 7629
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 4096
Block device 253:0
--- Logical volume ---
LV Path /dev/system/home
LV Name home
VG Name system
LV UUID h6Piot-XXYn-TBdK-s1Ja-YN1z-Fbdn-Nv72IT
LV Write Access read/write
LV Creation host, time kai, 2015-06-30 12:57:49 -0400
LV Status available
# open 1
LV Size 14.90 GiB
Current LE 3814
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 4096
Block device 253:2
--- Logical volume ---
LV Path /dev/system/swap
LV Name swap
VG Name system
LV UUID yh7WRj-w4OW-WV4M-q0hN-NlCx-RPiL-usSz6j
LV Write Access read/write
LV Creation host, time kai, 2015-06-30 12:57:57 -0400
LV Status available
# open 2
LV Size 3.72 GiB
Current LE 953
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 4096
Block device 253:1
--- Logical volume ---
LV Path /dev/system/storage
LV Name storage
VG Name system
LV UUID U9M7g3-sL2j-Gut6-TaNJ-BNWN-P3KM-DPpa4z
LV Write Access read/write
LV Creation host, time kai, 2015-06-30 12:58:03 -0400
LV Status available
# open 1
LV Size 7.23 TiB
Current LE 1895262
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 4096
Block device 253:3
그리고/etc/fstab
/dev/mapper/system-root / xfs noatime 0 1
/dev/mapper/system-home /home xfs nodev 0 2
/dev/mapper/system-storage /mnt/storage xfs nodev,noexec 0 2
/dev/mapper/system-swap none swap sw 0 0
다음과 같이 세 드라이브 모두에 grub을 설치했습니다.
$ grub-install /dev/sda
$ grub-install /dev/sdb
$ grub-install /dev/sdc
저하된 어레이를 부팅할 수 없는 이유에 대한 아이디어가 있습니까? 시간을 내주셔서 감사합니다.