how can i extend a partition knowing that All primary partitions are in use

katsumoto87 · 10-05-2018, 11:30 AM

hi,
i'm newbie
i have a vm with 100G i added ~50Gi
now i need to apply it
the problem is i dont have available partitions

fdisk /dev/sda

Command (m for help): p

Disk /dev/sda: 161.1 GB, 161061273600 bytes
255 heads, 63 sectors/track, 19581 cylinders, total 314572800 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 identifier: 0x0006f595

Device Boot Start End Blocks Id System
/dev/sda1 * 2048 499711 248832 83 Linux
/dev/sda2 501758 41940991 20719617 5 Extended
/dev/sda3 41940992 104857599 31458304 8e Linux LVM
/dev/sda4 104857600 209715199 52428800 8e Linux LVM
/dev/sda5 501760 41940991 20719616 8e Linux LVM

Command (m for help): n
All primary partitions are in use
Adding logical partition 6
No free sectors available

any suggestions?

BW-userx · 10-05-2018, 11:37 AM

I do not know LVM, but my partitions are as such using both primary and extended dos partitioning.

Code:

Device     Boot     Start       End   Sectors   Size Id Type
/dev/sda1  *         2048   1126399   1124352   549M  7 HPFS/NTFS/exFAT
/dev/sda2         1126400 204802047 203675648  97.1G  7 HPFS/NTFS/exFAT
/dev/sda3       204802048 256002047  51200000  24.4G 83 Linux
/dev/sda4       256004094 488396799 232392706 110.8G  5 Extended
/dev/sda5       256004096 311300095  55296000  26.4G 83 Linux
/dev/sda6       311302144 366598143  55296000  26.4G 83 Linux
/dev/sda7       366600192 421897066  55296875  26.4G 83 Linux
/dev/sda8       421898240 488396799  66498560  31.7G 83 Linux

first 3 are primary, 4th is primary,extended place holder (for a lack of not knowing how it is put) the remaining 4 are extended partitions.

it looks like you used only one primary then went to extended removing 3 more primary you could have used. you are only allowed 4 each.

ondoho · 10-05-2018, 11:45 AM

https://www.startpage.com/do/dsearch...+lvm+partition

rknichols · 10-05-2018, 01:07 PM

Quote:

Originally Posted by katsumoto87

Code:

Disk /dev/sda: 161.1 GB, 161061273600 bytes
255 heads, 63 sectors/track, 19581 cylinders, total 314572800 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 identifier: 0x0006f595

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048      499711      248832   83  Linux
/dev/sda2          501758    41940991    20719617    5  Extended
/dev/sda3        41940992   104857599    31458304   8e  Linux LVM
/dev/sda4       104857600   209715199    52428800   8e  Linux LVM
/dev/sda5          501760    41940991    20719616   8e  Linux LVM

You have boxed yourseof in quite effectively. Since your extended partition is sandwiched in between other primary partitions and thus cannot be expanded, the only thing you can do without completely reorganizing the disk is to expand sda4. You can then use pvresize and vgextend to make that space available to the existing volume group, and then either create new LVs there or extend the existing LVs into that space.