Ubuntu扩展 /dev/mapper/ubuntu--vg-ubuntu--lv空间
<p>1查看磁盘空间</p><div class="cnblogs_code">
<pre>root@root:~# <span style="color: rgba(0, 0, 255, 1)">df</span> -<span style="color: rgba(0, 0, 0, 1)">h
Filesystem SizeUsed Avail Use</span>%<span style="color: rgba(0, 0, 0, 1)"> Mounted on
udev </span><span style="color: rgba(128, 0, 128, 1)">1</span>.9G <span style="color: rgba(128, 0, 128, 1)">0</span><span style="color: rgba(128, 0, 128, 1)">1</span>.9G <span style="color: rgba(128, 0, 128, 1)">0</span>% /<span style="color: rgba(0, 0, 0, 1)">dev
tmpfs 393M</span><span style="color: rgba(128, 0, 128, 1)">2.1M</span>391M <span style="color: rgba(128, 0, 128, 1)">1</span>% /<span style="color: rgba(0, 0, 0, 1)">run
</span>/dev/mapper/ubuntu--vg-ubuntu--lv 14G<span style="color: rgba(128, 0, 128, 1)">4</span>.4G<span style="color: rgba(128, 0, 128, 1)">8</span>.8G<span style="color: rgba(128, 0, 128, 1)">34</span>% /<span style="color: rgba(0, 0, 0, 1)">
tmpfs </span><span style="color: rgba(128, 0, 128, 1)">2</span>.0G <span style="color: rgba(128, 0, 128, 1)">0</span><span style="color: rgba(128, 0, 128, 1)">2</span>.0G <span style="color: rgba(128, 0, 128, 1)">0</span>% /dev/<span style="color: rgba(0, 0, 0, 1)">shm
tmpfs </span><span style="color: rgba(128, 0, 128, 1)">5.0M</span><span style="color: rgba(128, 0, 128, 1)">4</span>.0K<span style="color: rgba(128, 0, 128, 1)">5.0M</span> <span style="color: rgba(128, 0, 128, 1)">1</span>% /run/<span style="color: rgba(0, 0, 0, 1)">lock
tmpfs </span><span style="color: rgba(128, 0, 128, 1)">2</span>.0G <span style="color: rgba(128, 0, 128, 1)">0</span><span style="color: rgba(128, 0, 128, 1)">2</span>.0G <span style="color: rgba(128, 0, 128, 1)">0</span>% /sys/fs/<span style="color: rgba(0, 0, 0, 1)">cgroup
</span>/dev/loop0 90M 90M <span style="color: rgba(128, 0, 128, 1)">0</span> <span style="color: rgba(128, 0, 128, 1)">100</span>% /snap/core/<span style="color: rgba(128, 0, 128, 1)">8268</span>
/dev/sda2 976M 82M828M <span style="color: rgba(128, 0, 128, 1)">9</span>% /<span style="color: rgba(0, 0, 0, 1)">boot
tmpfs 393M 20K393M </span><span style="color: rgba(128, 0, 128, 1)">1</span>% /run/user/<span style="color: rgba(128, 0, 128, 1)">125</span><span style="color: rgba(0, 0, 0, 1)">
tmpfs 393M 56K393M </span><span style="color: rgba(128, 0, 128, 1)">1</span>% /run/user/<span style="color: rgba(128, 0, 128, 1)">1000</span></pre>
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<p>查看vg</p>
<div class="cnblogs_code">
<pre>root@root:~<span style="color: rgba(0, 0, 0, 1)"># vgdisplay
</span>--- Volume group ---<span style="color: rgba(0, 0, 0, 1)">
VG Name ubuntu</span>-<span style="color: rgba(0, 0, 0, 1)">vg
System ID
Format lvm2
Metadata Areas </span><span style="color: rgba(128, 0, 128, 1)">1</span><span style="color: rgba(0, 0, 0, 1)">
Metadata Sequence No</span><span style="color: rgba(128, 0, 128, 1)">3</span><span style="color: rgba(0, 0, 0, 1)">
VG Access read</span>/<span style="color: rgba(0, 0, 255, 1)">write</span><span style="color: rgba(0, 0, 0, 1)">
VG Status resizable
MAX LV </span><span style="color: rgba(128, 0, 128, 1)">0</span><span style="color: rgba(0, 0, 0, 1)">
Cur LV </span><span style="color: rgba(128, 0, 128, 1)">1</span><span style="color: rgba(0, 0, 0, 1)">
Open LV </span><span style="color: rgba(128, 0, 128, 1)">1</span><span style="color: rgba(0, 0, 0, 1)">
Max PV </span><span style="color: rgba(128, 0, 128, 1)">0</span><span style="color: rgba(0, 0, 0, 1)">
Cur PV </span><span style="color: rgba(128, 0, 128, 1)">1</span><span style="color: rgba(0, 0, 0, 1)">
Act PV </span><span style="color: rgba(128, 0, 128, 1)">1</span><span style="color: rgba(0, 0, 0, 1)">
VG Size </span><<span style="color: rgba(128, 0, 128, 1)">79.00</span><span style="color: rgba(0, 0, 0, 1)"> GiB
PE Size </span><span style="color: rgba(128, 0, 128, 1)">4.00</span><span style="color: rgba(0, 0, 0, 1)"> MiB
Total PE </span><span style="color: rgba(128, 0, 128, 1)">20223</span><span style="color: rgba(0, 0, 0, 1)">
Alloc PE </span>/ Size <span style="color: rgba(128, 0, 128, 1)">3584</span> / <span style="color: rgba(128, 0, 128, 1)">14.00</span><span style="color: rgba(0, 0, 0, 1)"> GiB
FreePE </span>/ Size <span style="color: rgba(128, 0, 128, 1)">16639</span> / <<span style="color: rgba(128, 0, 128, 1)">65.00</span><span style="color: rgba(0, 0, 0, 1)"> GiB
VG UUID mg1Zau</span>-atla-jy56-ycyN-e6dS-UJC9-1ErQU7</pre>
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<p>扩展</p>
<div class="cnblogs_code">
<pre>lvextend -L 120G /dev/mapper/ubuntu--vg-ubuntu--lv <span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">增大至120G</span>
lvextend -L +20G /dev/mapper/ubuntu--vg-ubuntu--lv <span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">增加20G</span>
lvreduce -L 50G /dev/mapper/ubuntu--vg-ubuntu--lv <span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">减小至50G</span>
lvreduce -L -8G /dev/mapper/ubuntu--vg-ubuntu--lv <span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">减小8G</span>
lvresize -L30G /dev/mapper/ubuntu--vg-ubuntu--lv <span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">调整为30G</span></pre>
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<p>调整</p>
<div class="cnblogs_code">
<pre>resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv <span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">执行调整</span></pre>
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<p> </p><br><br>
来源：https://www.cnblogs.com/aldshengdeng/p/12956550.html
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