debian 10 扩展分区容量
1、扩展分区原因
安装软件时，有些安装程序会把软件包解压到/tmp分区，导致/tmp分区占满，软件安装失败，因此需要扩展/tmp分区
2、添加一块磁盘
3、命令记录
root@debian:~# fdisk -l
Disk /dev/sda: 100 GiB, 107374182400 bytes, 209715200 sectors
Disk model: VMware Virtual S
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: 0x62c59554
Device Boot Start End Sectors Size Id Type
/dev/sda1 * 2048 999423 997376 487M 83 Linux
/dev/sda2 1001470 209713151 208711682 99.5G 5 Extended
/dev/sda5 1001472 209713151 208711680 99.5G 8e Linux LVM
Disk /dev/sdb: 100 GiB, 107374182400 bytes, 209715200 sectors
Disk model: VMware Virtual S
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/debian--vg-root: 18.7 GiB, 20103299072 bytes, 39264256 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/debian--vg-swap_1: 976 MiB, 1023410176 bytes, 1998848 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/debian--vg-var: 6.6 GiB, 7033847808 bytes, 13737984 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/debian--vg-tmp: 1.2 GiB, 1258291200 bytes, 2457600 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/debian--vg-home: 72.1 GiB, 77439434752 bytes, 151248896 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
3.1、新增加的磁盘是/dev/sdb
增加磁盘前
root@debian:~/Koal/package/dm8# ls /dev/sd*
/dev/sda /dev/sda1 /dev/sda2 /dev/sda5
增加磁盘后重启系统 查看增加的是/dev/sdb
root@debian:/sys/class/scsi_host# ls /dev/sd*
/dev/sda /dev/sda1 /dev/sda2 /dev/sda5 /dev/sdb
3.2、使用磁盘/dev/sdb 创建物理卷
root@debian:~# pvcreate /dev/sd
sda sda1 sda2 sda5 sdb
root@debian:~# pvs
PV VG Fmt Attr PSize PFree
/dev/sda5 debian-vg lvm2 a-- <99.52g 0
root@debian:~# pvcreate /dev/sdb
Physical volume "/dev/sdb" successfully created.
root@debian:~# pvs
PV VG Fmt Attr PSize PFree
/dev/sda5 debian-vg lvm2 a-- <99.52g 0
/dev/sdb lvm2 --- 100.00g 100.00g
3.3、 把物理卷/dev/sdb加入到卷组debian-vg中
root@debian:~# vgs
VG #PV #LV #SN Attr VSize VFree
debian-vg 1 5 0 wz--n- <99.52g 0
root@debian:~# vgextend debian-vg /dev/sd
/dev/sda5 /dev/sdb
root@debian:~# vgextend debian-vg /dev/sdb
Volume group "debian-vg" successfully extended
root@debian:~# vgs
VG #PV #LV #SN Attr VSize VFree
debian-vg 2 5 0 wz--n- <199.52g <100.00g
3.4、查看物理卷、逻辑卷
root@debian:~# pvs
PV VG Fmt Attr PSize PFree
/dev/sda5 debian-vg lvm2 a-- <99.52g 0
/dev/sdb debian-vg lvm2 a-- <100.00g <100.00g
root@debian:~# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
home debian-vg -wi-ao---- 72.12g
root debian-vg -wi-ao---- 18.72g
swap_1 debian-vg -wi-ao---- 976.00m
tmp debian-vg -wi-ao---- 1.17g
var debian-vg -wi-ao---- 6.55g
root@debian:~# df -lh
Filesystem Size Used Avail Use% Mounted on
udev 3.9G 0 3.9G 0% /dev
tmpfs 796M 18M 779M 3% /run
/dev/mapper/debian--vg-root 19G 9.6G 7.9G 55% /
tmpfs 3.9G 0 3.9G 0% /dev/shm
tmpfs 5.0M 4.0K 5.0M 1% /run/lock
tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup
/dev/sda1 470M 57M 389M 13% /boot
/dev/mapper/debian--vg-home 71G 12M 67G 1% /home
/dev/mapper/debian--vg-var 6.4G 493M 5.6G 8% /var
/dev/mapper/debian--vg-tmp 1.2G 408K 1.1G 1% /tmp
tmpfs 796M 28K 796M 1% /run/user/116
tmpfs 796M 0 796M 0% /run/user/0
3.5、扩展逻辑卷/tmp
root@debian:~# lvextend -L +10G /dev/debian-vg/
/dev/debian-vg/home /dev/debian-vg/root /dev/debian-vg/swap_1 /dev/debian-vg/tmp /dev/debian-vg/var
root@debian:~# lvextend -L +10G /dev/debian-vg/tmp
Size of logical volume debian-vg/tmp changed from 1.17 GiB (300 extents) to 11.17 GiB (2860 extents).
Logical volume debian-vg/tmp successfully resized.
3.6、逻辑卷组debian-vg 空余空间被用掉10g 还剩90g可供分配
root@debian:~# vgs
VG #PV #LV #SN Attr VSize VFree
debian-vg 2 5 0 wz--n- <199.52g <90.00g
root@debian:~# df -lh
Filesystem Size Used Avail Use% Mounted on
udev 3.9G 0 3.9G 0% /dev
tmpfs 796M 18M 779M 3% /run
/dev/mapper/debian--vg-root 19G 9.6G 7.9G 55% /
tmpfs 3.9G 0 3.9G 0% /dev/shm
tmpfs 5.0M 4.0K 5.0M 1% /run/lock
tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup
/dev/sda1 470M 57M 389M 13% /boot
/dev/mapper/debian--vg-home 71G 12M 67G 1% /home
/dev/mapper/debian--vg-var 6.4G 493M 5.6G 8% /var
/dev/mapper/debian--vg-tmp 1.2G 408K 1.1G 1% /tmp
tmpfs 796M 28K 796M 1% /run/user/116
tmpfs 796M 0 796M 0% /run/user/0
3.7、查看逻辑卷/tmp的文件系统类型 为ext4
root@debian:~# df -lTh
Filesystem Type Size Used Avail Use% Mounted on
udev devtmpfs 3.9G 0 3.9G 0% /dev
tmpfs tmpfs 796M 18M 779M 3% /run
/dev/mapper/debian--vg-root ext4 19G 9.6G 7.9G 55% /
tmpfs tmpfs 3.9G 0 3.9G 0% /dev/shm
tmpfs tmpfs 5.0M 4.0K 5.0M 1% /run/lock
tmpfs tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup
/dev/sda1 ext2 470M 57M 389M 13% /boot
/dev/mapper/debian--vg-home ext4 71G 12M 67G 1% /home
/dev/mapper/debian--vg-var ext4 6.4G 493M 5.6G 8% /var
/dev/mapper/debian--vg-tmp ext4 1.2G 408K 1.1G 1% /tmp
tmpfs tmpfs 796M 28K 796M 1% /run/user/116
tmpfs tmpfs 796M 0 796M 0% /run/user/0
3.8、更新文件系统，把增加的10G 更新到文件系统中
root@debian:~# resize2fs /dev/
Display all 169 possibilities? (y or n)
root@debian:~# resize2fs /dev/mapper/
control debian--vg-home debian--vg-root debian--vg-swap_1 debian--vg-tmp debian--vg-var
root@debian:~# resize2fs /dev/debian-vg/
home root swap_1 tmp var
root@debian:~# resize2fs /dev/debian-vg/tmp
resize2fs 1.44.5 (15-Dec-2018)
Filesystem at /dev/debian-vg/tmp is mounted on /tmp; on-line resizing required
old_desc_blocks = 1, new_desc_blocks = 2
The filesystem on /dev/debian-vg/tmp is now 2928640 (4k) blocks long.
root@debian:~# df -lTh
Filesystem Type Size Used Avail Use% Mounted on
udev devtmpfs 3.9G 0 3.9G 0% /dev
tmpfs tmpfs 796M 18M 779M 3% /run
/dev/mapper/debian--vg-root ext4 19G 9.6G 7.9G 55% /
tmpfs tmpfs 3.9G 0 3.9G 0% /dev/shm
tmpfs tmpfs 5.0M 4.0K 5.0M 1% /run/lock
tmpfs tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup
/dev/sda1 ext2 470M 57M 389M 13% /boot
/dev/mapper/debian--vg-home ext4 71G 12M 67G 1% /home
/dev/mapper/debian--vg-var ext4 6.4G 493M 5.6G 8% /var
/dev/mapper/debian--vg-tmp ext4 11G 408K 11G 1% /tmp
tmpfs tmpfs 796M 28K 796M 1% /run/user/116
tmpfs tmpfs 796M 0 796M 0% /run/user/0
root@debian:~#