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Exercise 23.1: Logical Volumes

the_bro
the_bro Posts: 19
in LFS201 Class Forum

Working through the above exercise, I encountered the response shown below; obviously this has worked so does it mean 8e is an OS implementation-dependent option (I'm using CentOS 8)?

Command (m for help): t
Partition number (1,2, default 2):
Partition type (type L to list all types): 8e

Type of partition 2 is unchanged: Linux filesystem.

Also, if you do a list, there's no 8e:
...
78 Ceph disk in creation 89C57F98-2FE5-4DC0-89C1-F3AD0CEFF2BE
79 Ceph crypt disk in creation 89C57F98-2FE5-4DC0-89C1-5EC00CEFF2BE
80 VMware VMFS AA31E02A-400F-11DB-9590-000C2911D1B8
81 VMware Diagnostic 9D275380-40AD-11DB-BF97-000C2911D1B8
82 VMware Virtual SAN 381CFCCC-7288-11E0-92EE-000C2911D0B2
83 VMware Virsto 77719A0C-A4A0-11E3-A47E-000C29745A24
84 VMware Reserved 9198EFFC-31C0-11DB-8F78-000C2911D1B8
85 OpenBSD data 824CC7A0-36A8-11E3-890A-952519AD3F61
86 QNX6 file system CEF5A9AD-73BC-4601-89F3-CDEEEEE321A1
87 Plan 9 partition C91818F9-8025-47AF-89D2-F030D7000C2C
(END)

Answers

  • lee42x
    lee42x Posts: 360

    Thank you for brining this up, can you please post "disk -l /dev/(disk). Mine shows:
    [[email protected] ~]# fdisk -l /dev/sdc
    Disk /dev/sdc: 931.5 GiB, 1000204886016 bytes, 1953525168 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
    Disklabel type: dos
    Disk identifier: 0x2376fd81

    Device Boot Start End Sectors Size Id Type
    /dev/sdc1 2048 1953523119 1953521072 931.5G 7 HPFS/NTFS/exFAT
    [[email protected] ~]#_

    I suspect your Disklabel type is GPT.

    Lee

  • lee42x
    lee42x Posts: 360

    On GPT partition tables LinuxLVM is type 31.
    Thank you for the input,

    The LinuxFoundation provided Virtual Machines do not currently use GPT for partitioning.

    Lee

  • the_bro
    the_bro Posts: 19

    Thank you Lee; you are correct -- here's my listing:

    Disk /dev/sda: 931.5 GiB, 1000204886016 bytes, 1953525168 sectors
    Units: sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 4096 bytes
    I/O size (minimum/optimal): 4096 bytes / 4096 bytes
    Disklabel type: gpt
    Disk identifier: 863796EB-8E28-4E72-8BA1-0390AB3CBAB3

    Device Start End Sectors Size Type
    /dev/sda1 2048 390627327 390625280 186.3G Linux filesystem

    Ernest

  • coop
    coop Posts: 866

    on my system the "L" type subcommand clearly shows 8e as Linux LVM. Please note that in my experience I have never seen any utiltity on the system care what type you put in with fdisk. I have often forgotten to change it from the default when doing something else and the mount command does not care as it examines the beginning of the partition before doing anything with it . As far as I can see, the "type" is a historic relic of not much importance except in printouts

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