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--- informatica:linux:discos:lvm [2023/10/04 23:50] – jose
+++ informatica:linux:discos:lvm [2023/10/05 00:27] (current) – jose
@@ Line 652: / Line 652: @@
 ====== Debian 12 ======
-Con debian 12 y supongo que otros sistemas mas modernos. Queremos pasar 40Gb de /home a /var
+Tenemos que desmontar /home
 Miramos las particiones:
@@ Line 760: / Line 760: @@
 </code>
 Quitamos 40Gbs a /home:
-  lvextend -L -40G /dev/debian-vg/home
+  lvreduce -L -40G /dev/debian-vg/home
+<code>
+  WARNING: Reducing active and open logical volume to <46.43 GiB.
+  THIS MAY DESTROY YOUR DATA (filesystem etc.)
+Do you really want to reduce debian-vg/home? [y/n]: y
+  Size of logical volume debian-vg/home changed from <86.43 GiB (22126 extents) to <46.43 GiB (11886 extents).
+  Logical volume debian-vg/home successfully resized.
+</code>
+Vemos que hay 40Gb libres:
+<code>
+root@debian:~# vgdisplay
+  --- Volume group ---
+  VG Name               debian-vg
+  System ID
+  Format                lvm2
+  Metadata Areas        1
+  Metadata Sequence No  7
+  VG Access             read/write
+  VG Status             resizable
+  MAX LV                0
+  Cur LV                5
+  Open LV               5
+  Max PV                0
+  Cur PV                1
+  Act PV                1
+  VG Size               118.76 GiB
+  PE Size               4.00 MiB
+  Total PE              30403
+  Alloc PE / Size       20156 / 78.73 GiB
+  Free  PE / Size       10247 / <40.03 GiB
+  VG UUID               RjQDgJ-Nz9a-WDQG-4JoJ-KPHc-CUG4-zed2BI
+</code>
 Se las añadimos a /var
   lvextend -L +40G /dev/debian-vg/var
+<code>
+  Size of logical volume debian-vg/var changed from <7.73 GiB (1978 extents) to <47.73 GiB (12218 extents).
+  Logical volume debian-vg/var successfully resized.
+</code>
+Vemos que todavía no lo ha añadido:
+<code>
+df -h
+Filesystem                   Size  Used Avail Use% Mounted on
+/dev/mapper/debian--vg-root   22G  1.5G   20G   7% /
+/dev/mapper/debian--vg-home   85G   40K   81G   1% /home
+/dev/mapper/debian--vg-tmp   1.4G   40K  1.3G   1% /tmp
+/dev/mapper/debian--vg-var   7.6G  262M  6.9G   4% /var
+</code>
+Pero con lvdisplay si aparece:
+<code>
+  --- Logical volume ---
+  LV Path                /dev/debian-vg/var
+  LV Name                var
+  VG Name                debian-vg
+  LV UUID                jud91P-5LXr-t0KI-5KSM-nim3-Xhvk-oSwkw5
+  LV Write Access        read/write
+  LV Creation host, time debian, 2023-10-04 19:47:42 -0400
+  LV Status              available
+  # open                 1
+  LV Size                <47.73 GiB
+  Current LE             12218
+  Segments               2
+  Allocation             inherit
+  Read ahead sectors     auto
+  - currently set to     256
+  Block device           254:1
+</code>
+Hay que extender el FS:
+  resize2fs /dev/debian-vg/var
+  resize2fs 1.47.0 (5-Feb-2023)
+  Filesystem at /dev/debian-vg/var is mounted on /var; on-line resizing required
+  old_desc_blocks = 1, new_desc_blocks = 6
+  The filesystem on /dev/debian-vg/var is now 12511232 (4k) blocks long.
+Ahora si que aparece:
+<code>
+root@debian:~# df -h
+Filesystem                   Size  Used Avail Use% Mounted on
+/dev/mapper/debian--vg-root   22G  1.5G   20G   7% /
+/dev/mapper/debian--vg-home   85G   40K   81G   1% /home
+/dev/mapper/debian--vg-tmp   1.4G   40K  1.3G   1% /tmp
+/dev/mapper/debian--vg-var    47G  262M   45G   1% /var
+</code>