SundayHK
系统盘：原34G 扩容至100G
数据盘：原70G 扩容至48T
文件系统：XFS
注意事项：数据重要，操作请做好备份，打快照...
原磁盘信息
root@store53:~# df -h
Filesystem Size Used Avail Use% Mounted on
udev 7.8G 0 7.8G 0% /dev
tmpfs 1.6G 1.2M 1.6G 1% /run
/dev/sda2 34G 9.2G 25G 28% /
tmpfs 7.9G 0 7.9G 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 7.9G 0 7.9G 0% /sys/fs/cgroup
/dev/sdb 70G 104M 70G 1% /data
/dev/sda1 464M 122M 315M 28% /boot
tmpfs 1.6G 0 1.6G 0% /run/user/0
tmpfs 1.6G 0 1.6G 0% /run/user/1000
tmpfs 1.6G 0 1.6G 0% /run/user/1001首先在esxi对磁盘进行扩容
root@store53:~# fdisk -l
Disk /dev/sda: 100 GiB, 107374182400 bytes, 209715200 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x06b5cd13
Device Boot Start End Sectors Size Id Type
/dev/sda1 * 2048 999423 997376 487M 83 Linux
/dev/sda2 999424 71301119 70301696 33.5G 83 Linux
Disk /dev/sdb: 48 TiB, 52776558133248 bytes, 103079215104 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
root@store53:~# xfs_growfs /dev/sda2
meta-data=/dev/sda2 isize=512 agcount=4, agsize=2196928 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=1 spinodes=0 rmapbt=0
= reflink=0
data = bsize=4096 blocks=8787712, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal bsize=4096 blocks=4290, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0数据盘扩容
数据盘由于当时没分区，独立整块磁盘为一个分区，所以扩容很简单
root@store53:~# xfs_growfs /dev/sdb
root@store53:~# df -h
Filesystem Size Used Avail Use% Mounted on
udev 7.8G 0 7.8G 0% /dev
tmpfs 1.6G 1.2M 1.6G 1% /run
/dev/sda2 34G 9.2G 25G 28% /
tmpfs 7.9G 0 7.9G 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 7.9G 0 7.9G 0% /sys/fs/cgroup
/dev/sdb 48T 50G 48T 1% /data
/dev/sda1 464M 122M 315M 28% /boot
tmpfs 1.6G 0 1.6G 0% /run/user/0
tmpfs 1.6G 0 1.6G 0% /run/user/1000
tmpfs 1.6G 0 1.6G 0% /run/user/1001系统盘扩容
由于系统盘划分了分区，所以直接xfs_growfs是不成功
root@store53:~# xfs_growfs /dev/sda
xfs_growfs: /dev/sda is not a mounted XFS filesystem
root@store53:~# xfs_growfs /dev/sda2
meta-data=/dev/sda2 isize=512 agcount=4, agsize=2196928 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=1 spinodes=0 rmapbt=0
= reflink=0
data = bsize=4096 blocks=8787712, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal bsize=4096 blocks=4290, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
# 执行成功 但容量没发生变化 还是34G系统盘无损扩容操作步骤
注意提交备份，防操作失误
1.使用fdisk /dev/sda 输入p 查看磁盘分区信息
root@store53:~# fdisk /dev/sda
Welcome to fdisk (util-linux 2.31.1).
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/sda: 100 GiB, 107374182400 bytes, 209715200 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x06b5cd13
Device Boot Start End Sectors Size Id Type
/dev/sda1 * 2048 999423 997376 487M 83 Linux
/dev/sda2 999424 71301119 70301696 33.5G 83 Linux2.删除分区同时创建分区
通过将/dev/sda2 删除，再创建新更大分区(也是/dev/sda2) 实现分区合并，d删除分区时，其实未真正删除，w保存才开始清空数据。
这里可以记录在 /dev/sda2 的开始扇区是999424, 所以使用d删除 /dev/sda2 分区后，n新建分区 默认也是从999424 开始的, 注意新建确认不要移除标记(signature) 要键入N
Command (m for help): d
Partition number (1,2, default 2): 2
Partition 2 has been deleted.
Command (m for help): n
Partition type
p primary (1 primary, 0 extended, 3 free)
e extended (container for logical partitions)
Select (default p): p
Partition number (2-4, default 2):
First sector (999424-209715199, default 999424):
Last sector, +sectors or +size{K,M,G,T,P} (999424-209715199, default 209715199):
Created a new partition 2 of type 'Linux' and of size 99.5 GiB.
Partition #2 contains a xfs signature.
Do you want to remove the signature? [Y]es/[N]o: N # 注意不要移除标记
Command (m for help): w
The partition table has been altered.
Syncing disks.3.使用partprobe命令在不重启的情况下对分区信息进行重新读取，否则可能会出现xfs_growfs无法进行分区更新调整
root@store53:~# partprobe
root@store53:~# df -h
Filesystem Size Used Avail Use% Mounted on
udev 7.8G 0 7.8G 0% /dev
tmpfs 1.6G 1.1M 1.6G 1% /run
/dev/sda2 34G 9.2G 25G 28% /
tmpfs 7.9G 0 7.9G 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 7.9G 0 7.9G 0% /sys/fs/cgroup
/dev/sdb 48T 50G 48T 1% /data
/dev/sda1 464M 122M 315M 28% /boot
tmpfs 1.6G 0 1.6G 0% /run/user/0
tmpfs 1.6G 0 1.6G 0% /run/user/10014.使用xfs_growfs /dev/sda3对需要扩容的分区进行更新扩容
root@store53:~# xfs_growfs /dev/sda2
meta-data=/dev/sda2 isize=512 agcount=4, agsize=2196928 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=1 spinodes=0 rmapbt=0
= reflink=0
data = bsize=4096 blocks=8787712, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal bsize=4096 blocks=4290, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 8787712 to 26089472
root@store53:~# df -h
Filesystem Size Used Avail Use% Mounted on
udev 7.8G 0 7.8G 0% /dev
tmpfs 1.6G 1.1M 1.6G 1% /run
/dev/sda2 100G 9.2G 91G 10% /
tmpfs 7.9G 0 7.9G 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 7.9G 0 7.9G 0% /sys/fs/cgroup
/dev/sdb 48T 50G 48T 1% /data
/dev/sda1 464M 122M 315M 28% /boot
tmpfs 1.6G 0 1.6G 0% /run/user/0
tmpfs 1.6G 0 1.6G 0% /run/user/1001操作成功
