mdadmでの準備作業は終わったので、fdiskでパーティションを変更する。
忘れやすいので、swapパーティションをオフラインにすることを忘れないように注意。
root@edo / # swapoff /dev/sdb6 root@edo / # swapon NAME TYPE SIZE USED PRIO /dev/sda6 partition 6G 0B 1
fdiskで/dev/sdbを操作。
sdb3（/パーティション用）も拡張したい。（どうやってオフラインにするかは今度考えるけど、今のタイミングでパーティション自体は拡張しておく。ファイルシステムとRAIDアレイは今のままにしておけばよい。）
赤字にしたところのPartition 6は、swapoffができていなかったので、使用中だったため。swapoffして、fdiskをやり直しておいた。
root@edo /
# fdisk /dev/sdb
Welcome to fdisk (util-linux 2.35.2).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
Command (m for help): p
Disk /dev/sdb: 465.78 GiB, 500107862016 bytes, 976773168 sectors
Disk model: Crucial_CT500MX2
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: 0D638A13-AA1D-4131-8BB7-6DE88A59EDBA
Device Start End Sectors Size Type
/dev/sdb1 2048 1050623 1048576 512M Linux RAID
/dev/sdb2 1050624 1116159 65536 32M BIOS boot
/dev/sdb3 13633536 80742399 67108864 32G Linux RAID
/dev/sdb4 80742400 923797503 843055104 402G Linux RAID
/dev/sdb5 923797504 976773134 52975631 25.3G Linux RAID
/dev/sdb6 1116160 13633535 12517376 6G Linux swap
Partition table entries are not in disk order.
Command (m for help): d
Partition number (1-6, default 6): 3
Partition 3 has been deleted.
Command (m for help): d
Partition number (1,2,4-6, default 6): 4
Partition 4 has been deleted.
Command (m for help): d
Partition number (1,2,5,6, default 6): 5
Partition 5 has been deleted.
Command (m for help): d
Partition number (1,2,6, default 6): 6
Partition 6 has been deleted.
Command (m for help): p
Disk /dev/sdb: 465.78 GiB, 500107862016 bytes, 976773168 sectors
Disk model: Crucial_CT500MX2
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: 0D638A13-AA1D-4131-8BB7-6DE88A59EDBA
Device Start End Sectors Size Type
/dev/sdb1 2048 1050623 1048576 512M Linux RAID
/dev/sdb2 1050624 1116159 65536 32M BIOS boot
Command (m for help): n
Partition number (3-128, default 3):
First sector (1116160-976773134, default 1116160):
Last sector, +/-sectors or +/-size{K,M,G,T,P} (1116160-976773134, default 976773134): +60G
Created a new partition 3 of type 'Linux filesystem' and of size 60 GiB.
Partition #3 contains a swap signature.
Do you want to remove the signature? [Y]es/[N]o: y
The signature will be removed by a write command.
Command (m for help): p
Disk /dev/sdb: 465.78 GiB, 500107862016 bytes, 976773168 sectors
Disk model: Crucial_CT500MX2
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: 0D638A13-AA1D-4131-8BB7-6DE88A59EDBA
Device Start End Sectors Size Type
/dev/sdb1 2048 1050623 1048576 512M Linux RAID
/dev/sdb2 1050624 1116159 65536 32M BIOS boot
/dev/sdb3 1116160 126945279 125829120 60G Linux filesystem
Filesystem/RAID signature on partition 3 will be wiped.
Command (m for help): n
Partition number (4-128, default 4):
First sector (126945280-976773134, default 126945280):
Last sector, +/-sectors or +/-size{K,M,G,T,P} (126945280-976773134, default 976773134): +200G
Created a new partition 4 of type 'Linux filesystem' and of size 200 GiB.
Command (m for help): n
Partition number (5-128, default 5):
First sector (546375680-976773134, default 546375680):
Last sector, +/-sectors or +/-size{K,M,G,T,P} (546375680-976773134, default 976773134): +199G
Created a new partition 5 of type 'Linux filesystem' and of size 199 GiB.
Command (m for help): n
Partition number (6-128, default 6):
First sector (963708928-976773134, default 963708928):
Last sector, +/-sectors or +/-size{K,M,G,T,P} (963708928-976773134, default 976773134):
Created a new partition 6 of type 'Linux filesystem' and of size 6.2 GiB.
Command (m for help): p
Disk /dev/sdb: 465.78 GiB, 500107862016 bytes, 976773168 sectors
Disk model: Crucial_CT500MX2
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: 0D638A13-AA1D-4131-8BB7-6DE88A59EDBA
Device Start End Sectors Size Type
/dev/sdb1 2048 1050623 1048576 512M Linux RAID
/dev/sdb2 1050624 1116159 65536 32M BIOS boot
/dev/sdb3 1116160 126945279 125829120 60G Linux filesystem
/dev/sdb4 126945280 546375679 419430400 200G Linux filesystem
/dev/sdb5 546375680 963708927 417333248 199G Linux filesystem
/dev/sdb6 963708928 976773134 13064207 6.2G Linux filesystem
Filesystem/RAID signature on partition 3 will be wiped.
Command (m for help): t
Partition number (1-6, default 6): 3
Partition type (type L to list all types): 29
Changed type of partition 'Linux filesystem' to 'Linux RAID'.
Command (m for help): t
Partition number (1-6, default 6): 4
Partition type (type L to list all types): 29
Changed type of partition 'Linux filesystem' to 'Linux RAID'.
Command (m for help): t
Partition number (1-6, default 6): 5
Partition type (type L to list all types): 29
Changed type of partition 'Linux filesystem' to 'Linux RAID'.
Command (m for help): t
Partition number (1-6, default 6):
Partition type (type L to list all types): 19
Changed type of partition 'Linux filesystem' to 'Linux swap'.
Command (m for help): p
Disk /dev/sdb: 465.78 GiB, 500107862016 bytes, 976773168 sectors
Disk model: Crucial_CT500MX2
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: 0D638A13-AA1D-4131-8BB7-6DE88A59EDBA
Device Start End Sectors Size Type
/dev/sdb1 2048 1050623 1048576 512M Linux RAID
/dev/sdb2 1050624 1116159 65536 32M BIOS boot
/dev/sdb3 1116160 126945279 125829120 60G Linux RAID
/dev/sdb4 126945280 546375679 419430400 200G Linux RAID
/dev/sdb5 546375680 963708927 417333248 199G Linux RAID
/dev/sdb6 963708928 976773134 13064207 6.2G Linux swap
Filesystem/RAID signature on partition 3 will be wiped.
Command (m for help): w
The partition table has been altered.
Failed to remove partition 6 from system: Device or resource busy
Failed to add partition 3 to system: Device or resource busy
Failed to add partition 6 to system: Device or resource busy
The kernel still uses the old partitions. The new table will be used at the next reboot.
Syncing disks.
赤字にしたところのPartition 6は、swapoffができていなかったので、使用中だったため。swapoffして、fdiskをやり直しておいた。
Partition 3は不明。
でも、やり直したら何もエラーが出なかったので問題ないだろう。（本当であれば、ここで再起動すべき）
root@edo / # fdisk /dev/sdb Welcome to fdisk (util-linux 2.35.2). Changes will remain in memory only, until you decide to write them. Be careful before using the write command. Command (m for help): p Disk /dev/sdb: 465.78 GiB, 500107862016 bytes, 976773168 sectors Disk model: Crucial_CT500MX2 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: 0D638A13-AA1D-4131-8BB7-6DE88A59EDBA Device Start End Sectors Size Type /dev/sdb1 2048 1050623 1048576 512M Linux RAID /dev/sdb2 1050624 1116159 65536 32M BIOS boot /dev/sdb3 1116160 126945279 125829120 60G Linux RAID /dev/sdb4 126945280 546375679 419430400 200G Linux RAID /dev/sdb5 546375680 963708927 417333248 199G Linux RAID /dev/sdb6 963708928 976773134 13064207 6.2G Linux swap Command (m for help): w The partition table has been altered. Calling ioctl() to re-read partition table. Syncing disks. root@edo ~ Sun 02 Aug 2020 01:01:32 PM JST JST(+0900) # e2fsck /dev/sdb1 e2fsck 1.45.5 (07-Jan-2020) /dev/sdb1: clean, 419/131072 files, 163642/524224 blocks
sdb6にはswap領域を作成しておく。
swaponは今はしないでおき、同期が終わったらswaponする。
root@edo ~ Sun 02 Aug 2020 01:05:30 PM JST JST(+0900) # mkswap /dev/sdb6 Setting up swapspace version 1, size = 6.2 GiB (6688866304 bytes) no label, UUID=54a4d9c8-ecaf-4abc-bb43-25e363ce9517
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