VMware中对系统盘的拓展

mac2024-03-31 29

背景

我开始创建虚拟机的时候就是按照系统默认的给了20g现在不够用了，所以要扩展Linux的系统盘

在VMware上增加磁盘这个步骤请参照我上一篇文章这里不多加说明

https://blog.csdn.net/qq_21451945/article/details/102785446 这里我贴下我实现的步骤，我会把注释的部分加上表情（不能添加颜色）

添加的磁盘的分区成系统盘

😂#这个是我原始系统盘的大小 [root@node01 mnt]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/centos-root 18G 17G 1.4G 93% / devtmpfs 2.9G 0 2.9G 0% /dev tmpfs 2.9G 0 2.9G 0% /dev/shm tmpfs 2.9G 8.8M 2.9G 1% /run tmpfs 2.9G 0 2.9G 0% /sys/fs/cgroup /dev/sda3 79G 11G 65G 14% /mnt /dev/sda1 497M 125M 372M 26% /boot tmpfs 580M 0 580M 0% /run/user/996 tmpfs 580M 0 580M 0% /run/user/0 😂#查看在VMware中添加的磁盘 [root@node01 mnt]# fdisk -l Disk /dev/sdb: 53.7 GB, 53687091200 bytes, 104857600 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 Disk /dev/sda: 107.4 GB, 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 Disk label type: dos Disk identifier: 0x00044228 Device Boot Start End Blocks Id System /dev/sda1 * 2048 1026047 512000 83 Linux /dev/sda2 1026048 41943039 20458496 8e Linux LVM /dev/sda3 41943040 209715199 83886080 83 Linux Disk /dev/mapper/centos-root: 18.8 GB, 18756927488 bytes, 36634624 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 Disk /dev/mapper/centos-swap: 2147 MB, 2147483648 bytes, 4194304 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 😂#通过上面查询我们知道添加的是sdb，接下我们对它进行分区 [root@node01 mnt]# fdisk /dev/sdb Welcome to fdisk (util-linux 2.23.2). Changes will remain in memory only, until you decide to write them. Be careful before using the write command. Device does not contain a recognized partition table Building a new DOS disklabel with disk identifier 0xd824defb. Command (m for help): m 😂#这个可以不用执行，这个是查看命令用的 Command action a toggle a bootable flag b edit bsd disklabel c toggle the dos compatibility flag d delete a partition g create a new empty GPT partition table G create an IRIX (SGI) partition table l list known partition types m print this menu n add a new partition o create a new empty DOS partition table p print the partition table q quit without saving changes s create a new empty Sun disklabel t change a partition's system id u change display/entry units v verify the partition table w write table to disk and exit x extra functionality (experts only) Command (m for help): n 😂#添加分区 Partition type: p primary (0 primary, 0 extended, 4 free) e extended Select (default p): p 😂#把它划分为主分区 Partition number (1-4, default 1): First sector (2048-104857599, default 2048): 😂#直接回车（默认起始扇区和最后扇区） Using default value 2048 Last sector, +sectors or +size{K,M,G} (2048-104857599, default 104857599): 😂#直接回车（默认起始扇区和最后扇区） Using default value 104857599 Partition 1 of type Linux and of size 50 GiB is set Command (m for help): t 😂#由于我们上面分区的默认是Linux格式的，系统盘是Linux LVM格式的，因此转换格式 Selected partition 1 Hex code (type L to list all codes): 8e 😂#我们就选用8e的格式 Changed type of partition 'Linux' to 'Linux LVM' Command (m for help): w 😂#保存我们的分区 The partition table has been altered! Calling ioctl() to re-read partition table. Syncing disks.

挂载系统盘

😂#如下我们能看到我们添加的50G的磁盘已经成为Linux LVM的系统盘格式了 [root@node01 mnt]# fdisk -l Disk /dev/sdb: 53.7 GB, 53687091200 bytes, 104857600 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 Disk label type: dos Disk identifier: 0xd824defb Device Boot Start End Blocks Id System /dev/sdb1 2048 104857599 52427776 8e Linux LVM Disk /dev/sda: 107.4 GB, 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 Disk label type: dos Disk identifier: 0x00044228 Device Boot Start End Blocks Id System /dev/sda1 * 2048 1026047 512000 83 Linux /dev/sda2 1026048 41943039 20458496 8e Linux LVM /dev/sda3 41943040 209715199 83886080 83 Linux Disk /dev/mapper/centos-root: 18.8 GB, 18756927488 bytes, 36634624 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 Disk /dev/mapper/centos-swap: 2147 MB, 2147483648 bytes, 4194304 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 😂#用我们刚才的磁盘创建物理卷 [root@node01 mnt]# pvcreate /dev/sdb1 Physical volume "/dev/sdb1" successfully created 😂#查看物理卷组 [root@node01 mnt]# vgdisplay --- Volume group --- VG Name centos System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 3 VG Access read/write VG Status resizable MAX LV 0 Cur LV 2 Open LV 2 Max PV 0 Cur PV 1 Act PV 1 VG Size 19.51 GiB PE Size 4.00 MiB Total PE 4994 Alloc PE / Size 4984 / 19.47 GiB Free PE / Size 10 / 40.00 MiB VG UUID pHOcHG-qLyN-lTXE-bWLY-uc1X-og0y-cciCzv 😂#把我们创建的物理卷加入到物理卷组中 [root@node01 mnt]# vgextend /dev/centos /dev/sdb1 Volume group "centos" successfully extended 😂#再次查看，可以发现VG Size已经变成了69.5GiB了，说明成功了 [root@node01 mnt]# vgdisplay --- Volume group --- VG Name centos System ID Format lvm2 Metadata Areas 2 Metadata Sequence No 4 VG Access read/write VG Status resizable MAX LV 0 Cur LV 2 Open LV 2 Max PV 0 Cur PV 2 Act PV 2 VG Size 69.50 GiB PE Size 4.00 MiB Total PE 17793 Alloc PE / Size 4984 / 19.47 GiB Free PE / Size 12809 / 50.04 GiB VG UUID pHOcHG-qLyN-lTXE-bWLY-uc1X-og0y-cciCzv 😂#查看我们的根目录“/”对应的系统目录映射为/dev/mapper/centos-root [root@node01 mnt]# df -lh Filesystem Size Used Avail Use% Mounted on /dev/mapper/centos-root 18G 17G 1.4G 93% / devtmpfs 2.9G 0 2.9G 0% /dev tmpfs 2.9G 0 2.9G 0% /dev/shm tmpfs 2.9G 8.8M 2.9G 1% /run tmpfs 2.9G 0 2.9G 0% /sys/fs/cgroup /dev/sda3 79G 11G 65G 14% /mnt /dev/sda1 497M 125M 372M 26% /boot tmpfs 580M 0 580M 0% /run/user/996 tmpfs 580M 0 580M 0% /run/user/0 😂#把物理卷组挂载到系统盘的/目录下 [root@node01 mnt]# lvextend -L +51200M /dev/centos/root Size of logical volume centos/root changed from 17.47 GiB (4472 extents) to 67.47 GiB (17272 extents). Logical volume root successfully resized. 😂#重置根分区的容量，发现如下的错误，请用下面的解决方案 [root@node01 mnt]# resize2fs /dev/centos/root resize2fs 1.42.9 (28-Dec-2013) resize2fs: Bad magic number in super-block while trying to open /dev/centos/root Couldn't find valid filesystem superblock. 😂#上面错误的解决方案 [root@node01 mnt]# mount |grep root /dev/mapper/centos-root on / type xfs (rw,relatime,attr2,inode64,noquota) [root@node01 mnt]# xfs_growfs /dev/mapper/centos-root meta-data=/dev/mapper/centos-root isize=256 agcount=4, agsize=1144832 blks = sectsz=512 attr=2, projid32bit=1 = crc=0 finobt=0 data = bsize=4096 blocks=4579328, imaxpct=25 = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0 ftype=0 log =internal bsize=4096 blocks=2560, version=2 = sectsz=512 sunit=0 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 data blocks changed from 4579328 to 17686528 😂#到此为止，系统盘已经从18G扩充到68G了 [root@node01 mnt]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/centos-root 68G 17G 52G 24% / devtmpfs 2.9G 0 2.9G 0% /dev tmpfs 2.9G 0 2.9G 0% /dev/shm tmpfs 2.9G 8.8M 2.9G 1% /run tmpfs 2.9G 0 2.9G 0% /sys/fs/cgroup /dev/sda3 79G 11G 65G 14% /mnt /dev/sda1 497M 125M 372M 26% /boot tmpfs 580M 0 580M 0% /run/user/996 tmpfs 580M 0 580M 0% /run/user/0

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