129 lines
4.3 KiB
HTML
129 lines
4.3 KiB
HTML
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<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
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<head>
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<!-- 2023-06-02 Fri 23:16 -->
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<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1" />
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<title>Lezzo secret wiki</title>
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<meta name="author" content="bparodi" />
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<meta name="generator" content="Org Mode" />
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<link rel="stylesheet" type="text/css" href="./stylesheet.css"/>
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</head>
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<body>
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<div id="content" class="content">
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<h2>[ Lezzo secret wiki ]</a></h2>
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<div id="outline-container-org0e43b68" class="outline-2">
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<h2 id="org0e43b68"><b>~</b> QEMU e libvirt - comandi utili</h2>
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<div class="outline-text-2" id="text-org0e43b68">
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</div>
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<div id="outline-container-org7608206" class="outline-3">
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<h3 id="org7608206">Incrementa il disco virtuale della VM</h3>
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<div class="outline-text-3" id="text-org7608206">
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<p>
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A macchina spenta, supponendo che l'immagine si chiami "macchina.qcow2":
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</p>
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<pre class="example">
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root@hypervisor # qemu-img resize /var/lib/libvirt/images/macchina.qcow2 +10G
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</pre>
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<p>
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Poi bisogna usare <code>resize2fs /dev/vda1</code>, probabilmente rifacendo anche la
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partizione tramite fdisk. Un esempio:
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</p>
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<pre class="example">
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root@orazio ~# fdisk /dev/vda -l
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Disk /dev/vda: 60 GiB, 64424509440 bytes, 125829120 sectors
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Units: sectors of 1 * 512 = 512 bytes
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Sector size (logical/physical): 512 bytes / 512 bytes
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I/O size (minimum/optimal): 512 bytes / 512 bytes
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Disklabel type: gpt
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Disk identifier: 8E12E056-0076-4C2C-AC88-51E48D3D105E
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Device Start End Sectors Size Type
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/dev/vda1 2048 1050623 1048576 512M BIOS boot
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/dev/vda2 1050624 50331614 49280991 23.5G Linux filesystem
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</pre>
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<p>
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Nota come <code>Disk /dev/vda: 60 GiB</code> ma <code>/dev/vda2 ... 23.5G</code>.
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</p>
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<pre class="example">
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root@orazio ~# fdisk /dev/vda
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Welcome to fdisk (util-linux 2.38.1).
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Changes will remain in memory only, until you decide to write them.
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Be careful before using the write command.
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This disk is currently in use - repartitioning is probably a bad idea.
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It's recommended to umount all file systems, and swapoff all swap
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partitions on this disk.
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Command (m for help): d
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Partition number (1,2, default 2): 2
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Partition 2 has been deleted.
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Command (m for help): p
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Disk /dev/vda: 60 GiB, 64424509440 bytes, 125829120 sectors
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Units: sectors of 1 * 512 = 512 bytes
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Sector size (logical/physical): 512 bytes / 512 bytes
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I/O size (minimum/optimal): 512 bytes / 512 bytes
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Disklabel type: gpt
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Disk identifier: 8E12E056-0076-4C2C-AC88-51E48D3D105E
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Device Start End Sectors Size Type
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/dev/vda1 2048 1050623 1048576 512M BIOS boot
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Command (m for help): n
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Partition number (2-128, default 2):
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First sector (1050624-125829086, default 1050624):
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Last sector, +/-sectors or +/-size{K,M,G,T,P} (1050624-125829086, default 125827071):
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Created a new partition 2 of type 'Linux filesystem' and of size 59.5 GiB.
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Partition #2 contains a ext4 signature.
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Do you want to remove the signature? [Y]es/[N]o: n
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Command (m for help): w
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The partition table has been altered.
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Syncing disks.
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root@orazio ~# resize2fs /dev/vda2
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resize2fs 1.47.0 (5-Feb-2023)
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Filesystem at /dev/vda2 is mounted on /; on-line resizing required
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old_desc_blocks = 3, new_desc_blocks = 8
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The filesystem on /dev/vda2 is now 15597056 (4k) blocks long.
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</pre>
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<p>
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Potrebbe anche presentarsi questo errore:
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</p>
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<pre class="example">
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root@orazio ~ # fdisk /dev/vda
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Welcome to fdisk (util-linux 2.38.1).
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Changes will remain in memory only, until you decide to write them.
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Be careful before using the write command.
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GPT PMBR size mismatch (50331647 != 125829119) will be corrected by write.
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The backup GPT table is not on the end of the device. This problem will be corrected by write.
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This disk is currently in use - repartitioning is probably a bad idea.
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It's recommended to umount all file systems, and swapoff all swap
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partitions on this disk.
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</pre>
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<p>
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In tal caso semplicemente riscrivi la tavola premendo <code>w</code> e ricomincia la procedura.
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</p>
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</div>
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</div>
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</div>
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</div>
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<div id="postamble" class="status">
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<p class="author">Author: bparodi</p>
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<p class="date">Created: 2023-06-02 Fri 23:16</p>
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<p class="validation"><a href="https://validator.w3.org/check?uri=referer">Validate</a></p>
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</div>
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</body>
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</html>
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