I need to extend / dev / sda6 on other occasions and used the following guide (https://www.miarec.com/doc/administration-guide/doc1012), adding a new disk to the vm, but apparently it is not compatible with this case. since the fs I am trying to extend does not correspond to an LVM. Also these do not have a vg name since when executing vgdisplay I do not get results. I have the possibility to take a snapshot to the machine so I have tried several ways but without success. Sorry if I did not pose the question in the correct way.
[root@runner003 ~]# fdisk -l
Disk /dev/sda: 150.3 GB, 150323855360 bytes, 293601280 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: 0x000cf166
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 211814399 104857600 83 Linux
/dev/sda3 211814400 253757439 20971520 83 Linux
/dev/sda4 253757440 293601279 19921920 5 Extended
/dev/sda5 253759488 270276607 8258560 82 Linux swap / Solaris
/dev/sda6 270278656 280764415 5242880 83 Linux
/dev/sda7 280766464 293601279 6417408 83 Linux
Disk /dev/sdb: 15.7 GB, 15728640000 bytes, 30720000 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: 0x22061e6d
Device Boot Start End Blocks Id System
/dev/sdb1 2048 30719999 15358976 8e Linux LVM
[root@runner003 ~]# lvmdiskscan
/dev/sda1 [ 1.00 GiB]
/dev/sda2 [ 100.00 GiB]
/dev/sda3 [ 20.00 GiB]
/dev/sda5 [ <7.88 GiB]
/dev/sda6 [ 5.00 GiB]
/dev/sda7 [ 6.12 GiB]
/dev/sdb1 [ <14.65 GiB] LVM physical volume
0 disks
6 partitions
0 LVM physical volume whole disks
1 LVM physical volume