lrwxrwxrwx 1 root root   9 Oct 11 06:58 pci-0000:00:10.0-scsi-0:0:2:0 -> ../../sdc
lrwxrwxrwx 1 root root  10 Oct 11 06:58 pci-0000:00:10.0-scsi-0:0:2:0-part1 -> ../../sdc1

Mit diesen DevicePath können wir die Platte neu einlessen

echo "1" > /sys/class/scsi_disk/0\:0\:2\:0/device/rescan

<H> <B> <T> <L>

• <H> : Host
• <B> : Bus (Channel)
• <T> : Target (Id)
• <L> : LUN numbers

Die Meldung mit "dmesg"

[478399.861148] sd 0:0:1:0: [sdc] 6291456 512-byte logical blocks: (3.22 GB/3.00 GiB)
[478399.861273] sd 0:0:1:0: [sdc] Cache data unavailable
[478399.861277] sd 0:0:1:0: [sdc] Assuming drive cache: write through
[478399.861390] sdb: detected capacity change from 1073741824 to 3221225472

Überblick gewinnen, wo was ist.

pvdisplay

   --- Physical volume ---
  PV Name               /dev/sdc1
  VG Name               var01
  PV Size               3.00 GiB / not usable 3.00 MiB
  Allocatable           yes
  PE Size               4.00 MiB
  Total PE              767
  Free PE               42
  Allocated PE          725
  PV UUID               HbT1Dm-lOee-9XPp-UB73-3tfy-iR4Q-4J2WhU

  --- Physical volume ---
  PV Name               /dev/sdb1
  VG Name               var02
  PV Size               1022.00 MiB / not usable 2.00 MiB
  Allocatable           yes
  PE Size               4.00 MiB
  Total PE              255
  Free PE               105
  Allocated PE          150
  PV UUID               uoVs3U-7qCy-1woY-CciW-u0YW-k8Ul-kTA83S
 

Alle Festplatte in Linux am SCSI-Bus neu einlesen

for i in `ls /sys/class/scsi_host/|sed -e s/"[A-Za-z]"//g`;do echo "- - -" > /sys/class/scsi_host/host${i}/scan;done

[339199.530888] scsi 0:0:3:0: Direct-Access     VMware   Virtual disk     1.0  PQ: 0 ANSI: 2
[339199.530904] scsi target0:0:3: Beginning Domain Validation
[339199.532261] scsi target0:0:3: Domain Validation skipping write tests
[339199.532264] scsi target0:0:3: Ending Domain Validation
[339199.532358] scsi target0:0:3: FAST-40 WIDE SCSI 80.0 MB/s ST (25 ns, offset 127)
[339199.534554] sd 0:0:3:0: [sde] 4194304 512-byte logical blocks: (2.14 GB/2.00 GiB)
[339199.534618] sd 0:0:3:0: [sde] Write Protect is off
[339199.534622] sd 0:0:3:0: [sde] Mode Sense: 61 00 00 00
[339199.534693] sd 0:0:3:0: [sde] Cache data unavailable
[339199.534696] sd 0:0:3:0: [sde] Assuming drive cache: write through
[339199.535977] sd 0:0:3:0: [sde] Cache data unavailable
[339199.535980] sd 0:0:3:0: [sde] Assuming drive cache: write through
[339199.536307] sd 0:0:3:0: Attached scsi generic sg6 type 0
[339199.560913]  sde: unknown partition table
[339199.561078] sd 0:0:3:0: [sde] Cache data unavailable
[339199.561080] sd 0:0:3:0: [sde] Assuming drive cache: write through
[339199.561125] sd 0:0:3:0: [sde] Attached SCSI disk

Vergrössern des LVM Devices

Mit pvresize wird das Physical Device vergrössert.

pvresize /dev/sdc1

   Physical volume "/dev/sdc1" changed
  1 physical volume(s) resized / 0 physical volume(s) not resized

Überprüfung mit pvdisplay

pvdisplay /dev/sdc1

  --- Physical volume ---
  PV Name               /dev/sdc1
  VG Name               var01
  PV Size               1022.00 MiB / not usable 2.00 MiB
  Allocatable           yes
  PE Size               4.00 MiB
  Total PE              255
  Free PE               105
  Allocated PE          150
  PV UUID               uoVs3U-7qCy-1woY-CciW-u0YW-k8Ul-kTA83S

Vergrösserung von Logical Volume (LV)

lvextend -l+100%FREE /dev/var01/postgresql
lvextend -L +1000M /dev/var01/postgresql

 Extending logical volume postgresql to 1.14 GiB
 Logical volume postgresql successfully resized

Online Vergrösserung von dem  Dateisystem

resize2fs /dev/var01/postgresql
xfs_growfs /var/archive

Filesystem at /dev/var01/postgresql is mounted on /var/lib/postgresql; on-line resizing required
old_desc_blocks = 1, new_desc_blocks = 1
Performing an on-line resize of /dev/var01/postgresql to 299008 (4k) blocks.
The filesystem on /dev/var01/postgresql is now 299008 blocks long.

 Anhang

Neue Platte in der VG hinzufügen

pvcreate /dev/hdb7 
vgextend volg1 /dev/hdb7

GPT partition

parted

(parted) unit UNIT
(parted) print
(parted) mkpart

Model: Dell Virtual Disk (scsi)
Disk /dev/sda: 976224256kiB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number  Start      End          Size         File system  Name  Flags
 1      1024kiB    976896kiB    975872kiB    ext4
 2      976896kiB  15625216kiB  14648320kiB                     lvm

(parted) mkpart                                                           
Partition name?  []? lvm                                                  
File system type?  [ext2]? ext4                                           
Start? 15625216                                                           
End? 976224256                                                            
Warning: You requested a partition from 15625216kiB to 976224256kiB.      
The closest location we can manage is 15625216kiB to 976224239kiB.
Is this still acceptable to you?
Yes/No? Yes                      

Partion vergrößern

parted 

[Thu Sep 15 10:51:46 2022] sd 0:0:0:0: Capacity data has changed

echo "1" > /sys/class/scsi_disk/0\:0\:0\:0/device/rescan

[Thu Sep 15 11:01:27 2022] sd 0:0:0:0: [sda] 211812352 512-byte logical blocks: (108 GB/101 GiB)
[Thu Sep 15 11:01:27 2022] sd 0:0:0:0: [sda] 4096-byte physical blocks
[Thu Sep 15 11:01:27 2022] sda: detected capacity change from 107374182400 to 108447924224

yum -y install parted

# parted /dev/sda

GNU Parted 3.2
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) select /dev/sda
Using /dev/sda
(parted) unit s
(parted) print free
Warning: Not all of the space available to /dev/sda appears to be used, you can fix the GPT to use all of the space (an extra 2097152 blocks) or continue with the current setting?
Fix/Ignore? Fix
Model: Msft Virtual Disk (scsi)
Disk /dev/sda: 211812352s
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Disk Flags:

Number  Start       End         Size        File system  Name                  Flags
        34s         2047s       2014s       Free Space
 1      2048s       1845247s    1843200s    fat32        EFI System Partition  boot, esp
 2      1845248s    3418111s    1572864s    xfs
 3      3418112s    171190271s  167772160s                                     lvm
        171190272s  211812318s  40622047s   Free Space

(parted) resizepart
Partition number? 3
End?  [171190271s]? 211812318s
(parted) unit MiB
(parted) print free
Model: Msft Virtual Disk (scsi)
Disk /dev/sda: 103424MiB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Disk Flags:

Number  Start    End        Size       File system  Name                  Flags
        0.02MiB  1.00MiB    0.98MiB    Free Space
 1      1.00MiB  901MiB     900MiB     fat32        EFI System Partition  boot, esp
 2      901MiB   1669MiB    768MiB     xfs
 3      1669MiB  103424MiB  101755MiB                                     lvm

(parted) quit
Information: You may need to update /etc/fstab.

cfdisk

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