Versions Compared

Old Version 7

changes.mady.by.user jtel Support

Saved on

compared with

New Version 8

changes.mady.by.user jtel Support

Saved on

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.
Comment: Content imported from a Scroll Translations translation file.

...

Sv translation
languagede


Warning
titleAdvanced Topic

Warning - this is an advanced topic. Always backup your data first.

Preparation

Increase the size of the existing disk on both machines by EXACTLY the same size in the virtual environment.

The commands below assume that DRBD is running on /dev/sdb.

Make sure parted is current

Translations Ignore


Code Block
# Update parted
yum update parted



Rescan the SCSI Bus to display the drive

Sometimes the system will not see the new disk immediately. To achieve this without a reboot, run the following command to rescan the SCSI bus.

Translations Ignore


Code Block
titleRescan SCSI Bus
# Check the size of the partition
fdisk -l /dev/sdb

# Expected output - should show the increased size of the disk in the first line
Disk /dev/sdb: 536.9 GB, 536870912000 bytes, 1048576000 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: 0x00000000
 
# If not, rescan SCSI and repeat above
echo 1 > /sys/block/sdb/device/rescan

# If the above command does not work, rescan SCSI busses individually
echo "- - -" > /sys/class/scsi_host/host0/scan
echo "- - -" > /sys/class/scsi_host/host1/scan
echo "- - -" > /sys/class/scsi_host/host2/scan



Make one node Secondary

Determine which node is servicing the SMB share with pcs status, and then on the non sevicing node:

Translations Ignore


Code Block
# Determine which node is servicing the share
pcs status
 
# Standby the server on which the resources are NOT running
pcs cluster standby acd-store2
 
# Run this command on the STANDBY machine
drbdadm secondary jtelshared



Increase Partition Size and verify - on the secondary node

Translations Ignore


Code Block
# Increase partition size
# Enter "Fix" then "Fix" after entering the command below
parted /dev/sdb print 

# Make sure this has worked
parted /dev/sdb print free

################################################
# DO NOT CONTINUE UNLESS THE FREE SPACE IS SHOWN
################################################

# Increase the partition size
parted /dev/sdb resizepart 1 100%

# Check
parted /dev/sdb print free



Increase Partition Size and verify - on the primary node

Repeat all steps above on the primary node, to increase the partition on the primary node.

Resize DRBD

On the PRIMARY node:

Translations Ignore


Code Block
# Resize DRBD
drbdadm resize jtelshared



Check, and speed up sync

Translations Ignore


Code Block
# Make sure sync is happening
cat /proc/drbd
 
# Speed up sync
drbdadm disk-options --c-plan-ahead=0 --resync-rate=110M jtelshared



When sync finished, resize the file system

This assumes, the DRBD was created with XFS, and is mounted at /dev/drbd1

Translations Ignore


Code Block
# Grow file system
xfs_growfs /dev/drbd1



Check the Results

Translations Ignore


Code Block
df -h



Untune sync and make secondary primary again

Translations Ignore


Code Block
# Untune sync
drbdadm adjust jtelshared

# Make secondary primary again
drbdadm primary jtelshared

# Unstandby the server on which the resources are NOT running in the PCS cluster
pcs cluster unstandby acd-store2




Sv translation
languagefr

Warning
title

Translations Ignore


Code Block
# Update parted yum update parted


Translations Ignore


Code Block
title
# Check the size of the partition fdisk -l /dev/sdb # Expected output - should show the increased size of the disk in the first line Disk /dev/sdb: 536.9 GB, 536870912000 bytes, 1048576000 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: 0x00000000   # If not, rescan SCSI and repeat above echo 1 > /sys/block/sdb/device/rescan # If the above command does not work, rescan SCSI busses individually echo "- - -" > /sys/class/scsi_host/host0/scan echo "- - -" > /sys/class/scsi_host/host1/scan echo "- - -" > /sys/class/scsi_host/host2/scan


Translations Ignore


Code Block
# Determine which node is servicing the share pcs status   # Standby the server on which the resources are NOT running pcs cluster standby acd-store2   # Run this command on the STANDBY machine drbdadm secondary jtelshared


Translations Ignore


Code Block
# Increase partition size # Enter "Fix" then "Fix" after entering the command below parted /dev/sdb print # Make sure this has worked parted /dev/sdb print free ################################################ # DO NOT CONTINUE UNLESS THE FREE SPACE IS SHOWN ################################################ # Increase the partition size parted /dev/sdb resizepart 1 100% # Check parted /dev/sdb print free


Translations Ignore


Code Block
# Resize DRBD drbdadm resize jtelshared


Translations Ignore


Code Block
# Make sure sync is happening cat /proc/drbd   # Speed up sync drbdadm disk-options --c-plan-ahead=0 --resync-rate=110M jtelshared


Translations Ignore


Code Block
# Grow file system xfs_growfs /dev/drbd1


Translations Ignore


Code Block
df -h


Translations Ignore


Code Block
# Untune sync drbdadm adjust jtelshared # Make secondary primary again drbdadm primary jtelshared # Unstandby the server on which the resources are NOT running in the PCS cluster pcs cluster unstandby acd-store2