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nas:mount_raiddisk_another [2025/01/26 21:47] – [手順] nipa28nas:mount_raiddisk_another [2025/01/26 21:51] (現在) – nipa28
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 +以下は、よく分からずに試行錯誤していたときのログ。
 +実際にはやる必要のなかった無駄な操作が多く含まれているが、何かの参考になるかもしれないので残しておく。
 +
 +```
 +hiroshi@omvpi:~ $ dmesg
 +        :
 +[ 8929.274103] usb 1-1.2: new high-speed USB device number 3 using xhci_hcd
 +[ 8929.471725] usb 1-1.2: New USB device found, idVendor=152d, idProduct=9561, bcdDevice=81.36
 +[ 8929.471749] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=5
 +[ 8929.471762] usb 1-1.2: Product: JMS56x Series
 +[ 8929.471772] usb 1-1.2: Manufacturer: JMicron
 +[ 8929.471781] usb 1-1.2: SerialNumber: 00000000000000000000
 +[ 8929.482805] scsi host0: uas
 +[ 8929.486632] scsi 0:0:0:0: Direct-Access     ST3000DM 007-1WY10G       8136 PQ: 0 ANSI: 6
 +[ 8929.522498] sd 0:0:0:0: [sda] 5860533168 512-byte logical blocks: (3.00 TB/2.73 TiB)
 +[ 8929.522865] scsi 0:0:0:1: Direct-Access     ST3000DM 007-1WY10G       8136 PQ: 0 ANSI: 6
 +[ 8929.523223] sd 0:0:0:0: [sda] Write Protect is off
 +[ 8929.523232] sd 0:0:0:0: [sda] Mode Sense: 67 00 10 08
 +[ 8929.524723] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, supports DPO and FUA
 +[ 8929.525334] sd 0:0:0:0: [sda] Preferred minimum I/O size 4096 bytes
 +[ 8929.525343] sd 0:0:0:0: [sda] Optimal transfer size 33553920 bytes not a multiple of preferred minimum block size (4096 bytes)
 +[ 8929.601685] sd 0:0:0:1: [sdb] 5860533168 512-byte logical blocks: (3.00 TB/2.73 TiB)
 +[ 8929.602395] sd 0:0:0:1: [sdb] Write Protect is off
 +[ 8929.602413] sd 0:0:0:1: [sdb] Mode Sense: 67 00 10 08
 +[ 8929.604127] sd 0:0:0:1: [sdb] Write cache: enabled, read cache: enabled, supports DPO and FUA
 +[ 8929.604679]  sda: sda1 sda2 sda3
 +[ 8929.604841] sd 0:0:0:1: [sdb] Preferred minimum I/O size 4096 bytes
 +[ 8929.604856] sd 0:0:0:1: [sdb] Optimal transfer size 33553920 bytes not a multiple of preferred minimum block size (4096 bytes)
 +[ 8929.605963] sd 0:0:0:0: [sda] Attached SCSI disk
 +[ 8929.611992] sd 0:0:0:1: [sdb] Attached SCSI disk
 +[ 8929.621925] sd 0:0:0:0: Attached scsi generic sg0 type 0
 +[ 8929.622143] sd 0:0:0:1: Attached scsi generic sg1 type 0
 +[ 8930.035279] block device autoloading is deprecated and will be removed.
 +[ 8930.039552] block device autoloading is deprecated and will be removed.
 +[ 8930.050350] block device autoloading is deprecated and will be removed.
 +        :
 +
 +hiroshi@omvpi:~ $ sudo fdisk -l /dev/sd?
 +Disk /dev/sda: 2.73 TiB, 3000592982016 bytes, 5860533168 sectors
 +Disk model: 007-1WY10G      
 +Units: sectors of 1 * 512 = 512 bytes
 +Sector size (logical/physical): 512 bytes / 512 bytes
 +I/O size (minimum/optimal): 4096 bytes / 4096 bytes
 +Disklabel type: gpt
 +Disk identifier: 36F7B8D6-ED67-4C9C-A0A9-51CD930408B4
 +
 +Device       Start        End    Sectors  Size Type
 +/dev/sda1       64    8388671    8388608    4G Linux RAID
 +/dev/sda2  8388672    9437247    1048576  512M Linux RAID
 +/dev/sda3  9437248 5860529072 5851091825  2.7T Linux RAID
 +
 +
 +Disk /dev/sdb: 2.73 TiB, 3000592982016 bytes, 5860533168 sectors
 +Disk model: 007-1WY10G      
 +Units: sectors of 1 * 512 = 512 bytes
 +Sector size (logical/physical): 512 bytes / 512 bytes
 +I/O size (minimum/optimal): 4096 bytes / 4096 bytes
 +hiroshi@omvpi:~ $ 
 +hiroshi@omvpi:~ $ ll /dev/md*
 +-bash: ll: command not found
 +hiroshi@omvpi:~ $ ls -l /dev/md*
 +brw-rw---- 1 root disk 9, 125 Jan 25 22:30 /dev/md125
 +brw-rw---- 1 root disk 9, 126 Jan 25 22:30 /dev/md126
 +brw-rw---- 1 root disk 9, 127 Jan 25 22:30 /dev/md127
 +hiroshi@omvpi:~ $
 +
 +* /dev/sda が openwrt から取り外した RAID-1 を構成していたディスクのうちの1本
 +
 +hiroshi@omvpi:~ $ cat /proc/mdstat 
 +Personalities : [linear] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] 
 +md125 : inactive sda3[0](S)
 +      2925413816 blocks super 1.2
 +       
 +md126 : inactive sda1[0](S)
 +      4189184 blocks super 1.2
 +       
 +md127 : inactive sda2[0](S)
 +      522240 blocks super 1.2
 +       
 +unused devices: <none>
 +hiroshi@omvpi:~ $ 
 +
 +hiroshi@omvpi:~ $ sudo mdadm --detail /dev/md*
 +/dev/md125:
 +           Version : 1.2
 +        Raid Level : raid1
 +     Total Devices : 1
 +       Persistence : Superblock is persistent
 +
 +             State : inactive
 +   Working Devices : 1
 +
 +              Name : OpenWrt:3
 +              UUID : bee41517:55b3802c:f9404605:bc06b2d9
 +            Events : 20919
 +
 +    Number   Major   Minor   RaidDevice
 +
 +       -       8        3        -        /dev/sda3
 +/dev/md126:
 +           Version : 1.2
 +        Raid Level : raid1
 +     Total Devices : 1
 +       Persistence : Superblock is persistent
 +
 +             State : inactive
 +   Working Devices : 1
 +
 +              Name : OpenWrt:1
 +              UUID : d1675450:f945d915:a2ae2789:536908f1
 +            Events : 48
 +
 +    Number   Major   Minor   RaidDevice
 +
 +       -       8        1        -        /dev/sda1
 +/dev/md127:
 +           Version : 1.2
 +        Raid Level : raid0
 +     Total Devices : 1
 +       Persistence : Superblock is persistent
 +
 +             State : inactive
 +   Working Devices : 1
 +
 +              Name : OpenWrt:2
 +              UUID : 133d7fd3:01209fbf:5004cb32:421736b5
 +            Events : 0
 +
 +    Number   Major   Minor   RaidDevice
 +
 +       -       8        2        -        /dev/sda2
 +hiroshi@omvpi:~ $ 
 +
 +
 +
 +    Number   Major   Minor   RaidDevice
 +       -       8        3        -        /dev/sda3
 +       -       8        1        -        /dev/sda1
 +       -       8        2        -        /dev/sda2
 +
 +
 +＊ mdadm.conf の内容（初期状態）
 +
 +hiroshi@omvpi:~ $ cat /etc/mdadm/mdadm.conf 
 +# 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
 +
 +# This configuration was auto-generated on Sat, 18 Jan 2025 23:15:35 +0900 by mkconf
 +hiroshi@omvpi:~ $ 
 +
 +hiroshi@omvpi:~ $ lsblk
 +NAME        MAJ:MIN RM  SIZE RO TYPE MOUNTPOINTS
 +sda           8:0    0  2.7T  0 disk 
 +├─sda1        8:1    0    4G  0 part 
 +│ └─md126     9:126  0    0B  0 md   
 +├─sda2        8:2    0  512M  0 part 
 +│ └─md127     9:127  0    0B  0 md   
 +└─sda3        8:3    0  2.7T  0 part 
 +  └─md125     9:125  0    0B  0 md   
 +sdb           8:16   0  2.7T  0 disk 
 +mmcblk0     179:0    0  7.4G  0 disk 
 +├─mmcblk0p1 179:1    0  512M  0 part /boot/firmware
 +└─mmcblk0p2 179:2    0  6.9G  0 part /var/folder2ram/var/cache/samba
 +                                     /var/folder2ram/var/lib/monit
 +                                     /var/folder2ram/var/lib/rrdcached
 +                                     /var/folder2ram/var/spool
 +                                     /var/folder2ram/var/lib/openmediavault/rrd
 +                                     /var/folder2ram/var/tmp
 +                                     /var/folder2ram/var/log
 +                                     /
 +hiroshi@omvpi:~ $ 
 +
 +hiroshi@omvpi:~ $ sudo parted /dev/md125 print
 +Warning: Error fsyncing/closing /dev/md125: Input/output error
 +Retry/Ignore? r                                                           
 +Warning: Error fsyncing/closing /dev/md125: Input/output error
 +Retry/Ignore? i                                                           
 +hiroshi@omvpi:~ $ sudo parted /dev/md126 print
 +Warning: Error fsyncing/closing /dev/md126: Input/output error
 +Retry/Ignore? i                                                           
 +hiroshi@omvpi:~ $ sudo parted /dev/md127 print
 +Warning: Error fsyncing/closing /dev/md127: Input/output error
 +Retry/Ignore? i                                                           
 +hiroshi@omvpi:~ $ 
 +
 +＊ OpenWRTでは、どんな風になっていたのか（現行のディスクをチェックしてみる）
 +
 +
 +
 +BusyBox v1.35.0 (2023-01-03 00:24:21 UTC) built-in shell (ash)
 +
 +  _______                     ________        __
 + |       |.-----.-----.-----.|  |  |  |.----.|  |_
 + |   -   ||  _  |  -__|     ||  |  |  ||   _||   _|
 + |_______||   __|_____|__|__||________||__|  |____|
 +          |__| W I R E L E S S   F R E E D O M
 + -----------------------------------------------------
 + OpenWrt 22.03.3, r20028-43d71ad93e
 + -----------------------------------------------------
 +root@OpenWrt:~# 
 +root@OpenWrt:~# df
 +Filesystem           1K-blocks      Used Available Use% Mounted on
 +/dev/root                 3072      3072         0 100% /rom
 +tmpfs                   125772     87464     38308  70% /tmp
 +/dev/ubi0_1             106184     21136     80208  21% /overlay
 +overlayfs:/overlay      106184     21136     80208  21% /
 +tmpfs                      512         0       512   0% /dev
 +/dev/md3             5762648500 3634764892 1835083632  66% /mnt/md3
 +/dev/md1               4041440     44160   3771440   1% /mnt/md1
 +root@OpenWrt:~# cat /proc/mdstat 
 +Personalities : [raid0] [raid1] [raid10] 
 +md1 : active raid1 sda1[3] sdb1[2]
 +      4189184 blocks super 1.2 [2/2] [UU]
 +      
 +md3 : active raid1 sda3[3] sdb3[2]
 +      5855671847 blocks super 1.2 [2/2] [UU]
 +      bitmap: 0/22 pages [0KB], 131072KB chunk
 +
 +unused devices: <none>
 +root@OpenWrt:~# 
 +Disk /dev/sda: 5.46 TiB, 6001175126016 bytes, 11721045168 sectors
 +Disk model: WDC WD60EZAZ-00S
 +Units: sectors of 1 * 512 = 512 bytes
 +Sector size (logical/physical): 512 bytes / 4096 bytes
 +I/O size (minimum/optimal): 4096 bytes / 4096 bytes
 +Disklabel type: gpt
 +Disk identifier: 875A90EA-FE1C-4FE0-9649-DB24155B5A85
 +
 +Device       Start         End     Sectors  Size Type
 +/dev/sda1       64     8388671     8388608    4G Linux RAID
 +/dev/sda2  8388672     9437247     1048576  512M Linux RAID
 +/dev/sda3  9437248 11721045134 11711607887  5.5T Linux RAID
 +
 +
 +Disk /dev/sdb: 5.46 TiB, 6001175126016 bytes, 11721045168 sectors
 +Disk model: WDC WD60EZAZ-00S
 +Units: sectors of 1 * 512 = 512 bytes
 +Sector size (logical/physical): 512 bytes / 4096 bytes
 +I/O size (minimum/optimal): 4096 bytes / 4096 bytes
 +Disklabel type: gpt
 +Disk identifier: F11EE5F2-D7CE-4738-AA86-59F981999363
 +
 +Device       Start         End     Sectors  Size Type
 +/dev/sdb1       64     8388671     8388608    4G Linux RAID
 +/dev/sdb2  8388672     9437247     1048576  512M Linux RAID
 +/dev/sdb3  9437248 11721045134 11711607887  5.5T Linux RAID
 +root@OpenWrt:~#
 +root@OpenWrt:~# mdadm --detail /dev/md*
 +/dev/md1:
 +           Version : 1.2
 +     Creation Time : Mon May 30 21:03:48 2022
 +        Raid Level : raid1
 +        Array Size : 4189184 (4.00 GiB 4.29 GB)
 +     Used Dev Size : 4189184 (4.00 GiB 4.29 GB)
 +      Raid Devices : 2
 +     Total Devices : 2
 +       Persistence : Superblock is persistent
 +
 +       Update Time : Sun Jan 26 13:50:51 2025
 +             State : clean 
 +    Active Devices : 2
 +   Working Devices : 2
 +    Failed Devices : 0
 +     Spare Devices : 0
 +
 +Consistency Policy : resync
 +
 +              Name : OpenWrt:1  (local to host OpenWrt)
 +              UUID : d1675450:f945d915:a2ae2789:536908f1
 +            Events : 70
 +
 +    Number   Major   Minor   RaidDevice State
 +       3       8        1        0      active sync   /dev/sda1
 +       2       8       17        1      active sync   /dev/sdb1
 +/dev/md3:
 +           Version : 1.2
 +     Creation Time : Fri May 27 21:35:24 2022
 +        Raid Level : raid1
 +        Array Size : 5855671847 (5584.40 GiB 5996.21 GB)
 +     Used Dev Size : 5855671847 (5584.40 GiB 5996.21 GB)
 +      Raid Devices : 2
 +     Total Devices : 2
 +       Persistence : Superblock is persistent
 +
 +     Intent Bitmap : Internal
 +
 +       Update Time : Sun Jan 26 13:51:22 2025
 +             State : clean 
 +    Active Devices : 2
 +   Working Devices : 2
 +    Failed Devices : 0
 +     Spare Devices : 0
 +
 +Consistency Policy : bitmap
 +
 +              Name : OpenWrt:3  (local to host OpenWrt)
 +              UUID : bee41517:55b3802c:f9404605:bc06b2d9
 +            Events : 24640
 +
 +    Number   Major   Minor   RaidDevice State
 +       3       8        3        0      active sync   /dev/sda3
 +       2       8       19        1      active sync   /dev/sdb3
 +root@OpenWrt:~# 
 +root@OpenWrt:~# cat /etc/config/mdadm
 +config mdadm
 +        option email root
 +        # list devices /dev/hd*
 +        # list devices /dev/sd*
 +        # list devices partitions
 +
 +#config array
 +#       option device /dev/md2
 +#       option name OpenWrt:2
 +#       list devices /dev/sda2
 +#       list devices /dev/sdb2
 +
 +config array
 +        option device /dev/md3
 +        option name OpenWrt:3
 +        list devices /dev/sda3
 +        list devices /dev/sdb3
 +
 +config array
 +        option device /dev/md1
 +        option name OpenWrt:1
 +        list devices /dev/sda1
 +        list devices /dev/sdb1
 +root@OpenWrt:~#
 +root@OpenWrt:~# mdadm --examine --scan /dev/sd[ab][13]
 +ARRAY /dev/md/3  metadata=1.2 UUID=bee41517:55b3802c:f9404605:bc06b2d9 name=OpenWrt:3
 +ARRAY /dev/md/1  metadata=1.2 UUID=d1675450:f945d915:a2ae2789:536908f1 name=OpenWrt:1
 +root@OpenWrt:~# 
 +
 +* こっちでも同じこと
 +root@OpenWrt:~# mdadm --examine --brief --scan --config=partitions
 +ARRAY /dev/md/1  metadata=1.2 UUID=d1675450:f945d915:a2ae2789:536908f1 name=OpenWrt:1
 +ARRAY /dev/md/3  metadata=1.2 UUID=bee41517:55b3802c:f9404605:bc06b2d9 name=OpenWrt:3
 +root@OpenWrt:~#
 +
 +
 +
 +
 +
 +＊ラズパイ側に戻る
 +
 +こう出てくる
 +hiroshi@omvpi:~ $ sudo mdadm --examine --brief --scan --config=partitions
 +ARRAY /dev/md/1  metadata=1.2 UUID=d1675450:f945d915:a2ae2789:536908f1 name=OpenWrt:1
 +ARRAY /dev/md/2  metadata=1.2 UUID=133d7fd3:01209fbf:5004cb32:421736b5 name=OpenWrt:2
 +ARRAY /dev/md/3  metadata=1.2 UUID=bee41517:55b3802c:f9404605:bc06b2d9 name=OpenWrt:3
 +hiroshi@omvpi:~ $
 +
 +こうなってる
 +hiroshi@omvpi:~ $ cat /etc/mdadm/mdadm.conf 
 +# 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
 +
 +# This configuration was auto-generated on Sat, 18 Jan 2025 23:15:35 +0900 by mkconf
 +hiroshi@omvpi:~ $
 +hiroshi@omvpi:~ $ ls -alF /dev/md*
 +brw-rw---- 1 root disk 9, 125 Jan 25 23:31 /dev/md125
 +brw-rw---- 1 root disk 9, 126 Jan 25 23:31 /dev/md126
 +brw-rw---- 1 root disk 9, 127 Jan 25 23:31 /dev/md127
 +hiroshi@omvpi:~ $
 +
 +hiroshi@omvpi:~ $ sudo mv /etc/mdadm/mdadm.conf /etc/mdadm/mdadm.conf.ORIGINAL
 +hiroshi@omvpi:~ $ sudo vi /etc/mdadm/mdadm.conf
 +hiroshi@omvpi:~ $ cat /etc/mdadm/mdadm.conf
 +ARRAY /dev/md1  metadata=1.2 UUID=d1675450:f945d915:a2ae2789:536908f1 name=OpenWrt:1
 +ARRAY /dev/md2  metadata=1.2 UUID=133d7fd3:01209fbf:5004cb32:421736b5 name=OpenWrt:2
 +ARRAY /dev/md3  metadata=1.2 UUID=bee41517:55b3802c:f9404605:bc06b2d9 name=OpenWrt:3
 +hiroshi@omvpi:~ $ 
 +hiroshi@omvpi:~ $ sudo mdadm -A -s
 +hiroshi@omvpi:~ $ 
 +
 +sudo reboot
 +
 +hiroshi@omvpi:~ $ sudo rm /dev/md12
 +md125  md126  md127 
 +hiroshi@omvpi:~ $ sudo rm /dev/md12*
 +hiroshi@omvpi:~ $ 
 +hiroshi@omvpi:~ $ sudo mdadm -A -s
 +hiroshi@omvpi:~ $ ls /dev/m
 +mapper/    media0     media1     media2     media3     mem        mmcblk0    mmcblk0p1  mmcblk0p2  mqueue/    
 +hiroshi@omvpi:~ $ 
 +hiroshi@omvpi:~ $ 
 +
 +
 +
 +hiroshi@omvpi:~ $ sudo mdadm --create /dev/md3 --level=1 --raid-devices=1 /dev/sda3
 +mdadm: '1' is an unusual number of drives for an array, so it is probably
 +     a mistake.  If you really mean it you will need to specify --force before
 +     setting the number of drives.
 +hiroshi@omvpi:~ $ sudo mdadm --create /dev/md3 --level=1 --raid-devices=1 /dev/sda3 --force
 +mdadm: cannot open /dev/sda3: Device or resource busy
 +hiroshi@omvpi:~ $
 +
 +
 +
 +
 +
 +=====
 +Linux omvpi 6.6.62+rpt-rpi-v8 #1 SMP PREEMPT Debian 1:6.6.62-1+rpt1 (2024-11-25) aarch64
 +
 +The programs included with the Debian GNU/Linux system are free software;
 +the exact distribution terms for each program are described in the
 +individual files in /usr/share/doc/*/copyright.
 +
 +Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
 +permitted by applicable law.
 +Last login: Sun Jan 26 15:41:19 2025 from 2001:c90:8440:4e89:e5da:40d5:b3f2:8ab7
 +hiroshi@omvpi:~ $ ls /dev/md12
 +md125  md126  md127  
 +hiroshi@omvpi:~ $ sudo update-initramfs -u
 +update-initramfs: Generating /boot/initrd.img-6.6.62+rpt-rpi-v8
 +'/boot/initrd.img-6.6.62+rpt-rpi-v8' -> '/boot/firmware/initramfs8'
 +update-initramfs: Generating /boot/initrd.img-6.6.62+rpt-rpi-2712
 +'/boot/initrd.img-6.6.62+rpt-rpi-2712' -> '/boot/firmware/initramfs_2712'
 +hiroshi@omvpi:~ $
 +
 +
 +hiroshi@omvpi:~ $ ls -l /dev/md*
 +brw-rw---- 1 root disk 9, 1 Jan 26 16:37 /dev/md1
 +brw-rw---- 1 root disk 9, 2 Jan 26 16:37 /dev/md2
 +brw-rw---- 1 root disk 9, 3 Jan 26 16:37 /dev/md3
 +hiroshi@omvpi:~ $ 
 +
 +hiroshi@omvpi:~ $ ls -l /dev/md*
 +brw-rw---- 1 root disk 9, 1 Jan 26 16:37 /dev/md1
 +brw-rw---- 1 root disk 9, 2 Jan 26 16:37 /dev/md2
 +brw-rw---- 1 root disk 9, 3 Jan 26 16:37 /dev/md3
 +hiroshi@omvpi:~ $ cat /proc/mdstat 
 +Personalities : [linear] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] 
 +md3 : inactive sda3[0](S)
 +      2925413816 blocks super 1.2
 +       
 +md2 : inactive sda2[0](S)
 +      522240 blocks super 1.2
 +       
 +md1 : inactive sda1[0](S)
 +      4189184 blocks super 1.2
 +       
 +unused devices: <none>
 +hiroshi@omvpi:~ $
 +
 +hiroshi@omvpi:~ $ sudo mount /dev/md3 /mnt/raiddisk3
 +mount: /mnt/raiddisk3: can't read superblock on /dev/md3.
 +       dmesg(1) may have more information after failed mount system call.
 +mount: (hint) your fstab has been modified, but systemd still uses
 +       the old version; use 'systemctl daemon-reload' to reload.
 +hiroshi@omvpi:~ $ 
 +
 +[ 3015.764373] mount: attempt to access beyond end of device
 +               md3: rw=4096, sector=2, nr_sectors = 2 limit=0
 +[ 3015.764395] EXT4-fs (md3): unable to read superblock
 +
 +
 +
 +hiroshi@omvpi:~ $ sudo mkfs.ext4 -n /dev/md3
 +mke2fs 1.47.0 (5-Feb-2023)
 +mkfs.ext4: Device size reported to be zero.  Invalid partition specified, or
 +        partition table wasn't reread after running fdisk, due to
 +        a modified partition being busy and in use.  You may need to reboot
 +        to re-read your partition table.
 +
 +hiroshi@omvpi:~ $ sudo fsck /dev/md3 -p
 +fsck from util-linux 2.38.1
 +fsck.ext2: Invalid argument while trying to open /dev/md3
 +/dev/md3: 
 +The superblock could not be read or does not describe a valid ext2/ext3/ext4
 +filesystem.  If the device is valid and it really contains an ext2/ext3/ext4
 +filesystem (and not swap or ufs or something else), then the superblock
 +is corrupt, and you might try running e2fsck with an alternate superblock:
 +    e2fsck -b 8193 <device>
 + or
 +    e2fsck -b 32768 <device>
 +
 +hiroshi@omvpi:~ $
 +```
 +
 +```
 +hiroshi@omvpi:~ $ cat /proc/mdstat 
 +Personalities : [linear] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] 
 +md3 : inactive sda3[0](S)
 +      2925413816 blocks super 1.2
 +       
 +md2 : inactive sda2[0](S)
 +      522240 blocks super 1.2
 +       
 +md1 : inactive sda1[0](S)
 +      4189184 blocks super 1.2
 +       
 +unused devices: <none>
 +hiroshi@omvpi:~ $ sudo mdadm --run /dev/md3
 +mdadm: started array /dev/md3
 +hiroshi@omvpi:~ $ sudo mount /dev/md3 /mnt/raiddisk3
 +mount: (hint) your fstab has been modified, but systemd still uses
 +       the old version; use 'systemctl daemon-reload' to reload.
 +hiroshi@omvpi:~ $ ls /mnt/raiddisk3
 +TESTFILE  homes  lost+found  share  users
 +hiroshi@omvpi:~ $ ls -l /mnt/raiddisk3
 +total 32
 +-rw-r--r-- 1 root   root    29 May 28  2022 TESTFILE
 +drwxr-xr-x 3 root   root  4096 May 28  2022 homes
 +drwx------ 2 root   root 16384 May 28  2022 lost+found
 +drwxrwxrwx 8 nobody root  4096 Oct 15  2022 share
 +drwxr-xr-x 6 nobody root  4096 Nov 23  2022 users
 +hiroshi@omvpi:~ $ 
 +
 +hiroshi@omvpi:~ $ cat /proc/mdstat 
 +Personalities : [raid1] [linear] [raid0] [raid6] [raid5] [raid4] [raid10] 
 +md3 : active (auto-read-only) raid1 sda3[0]
 +      2925413760 blocks super 1.2 [2/1] [U_]
 +      bitmap: 3/22 pages [12KB], 65536KB chunk
 +
 +md2 : inactive sda2[0](S)
 +      522240 blocks super 1.2
 +       
 +md1 : inactive sda1[0](S)
 +      4189184 blocks super 1.2
 +       
 +unused devices: <none>
 +hiroshi@omvpi:~ $ 
 +
 +
 +```
  
  
nas/mount_raiddisk_another.txt · 最終更新: by nipa28