LinuxTab - A man page a day keeps the trouble away: RHEL

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Something to know ...

Rescan the SCSI bus
# echo "- - -" > /sys/class/scsi_host/host0/scan

To expand the same LUN, perform the following task
# echo 1 > /sys/class/scsi_device/device/rescan

Verify
# fdisk -l

$ ssh admin@192.168.0.10

$ sudo fdisk -l

WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.

Disk /dev/sda: 268.4 GB, 268435456000 bytes, 524288000 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: gpt

Disk identifier: EA4D9CB5-6A7C-417B-90B0-BF71AF7BB69F

# Start End Size Type Name

1 2048 4095 1M BIOS boot

2 4096 2101247 1G Microsoft basic

3 2101248 524285951 249G Linux LVM

Disk /dev/sdb: 10995.1 GB, 10995116277760 bytes, 21474836480 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 /dev/mapper/vg0-root: 37.6 GB, 37580963840 bytes, 73400320 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 /dev/mapper/vg0-swap: 4160 MB, 4160749568 bytes, 8126464 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 /dev/mapper/vg0-01: 5368 MB, 5368709120 bytes, 10485760 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 /dev/mapper/vg0-00: 220.2 GB, 220242903040 bytes, 430161920 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

$ sudo parted /dev/sdb

GNU Parted 3.1

Using /dev/sdb

Welcome to GNU Parted! Type 'help' to view a list of commands.

(parted) mklabel gpt

(parted) help

align-check TYPE N check partition N for TYPE(min|opt) alignment

help [COMMAND] print general help, or help on COMMAND

mklabel,mktable LABEL-TYPE create a new disklabel (partition table)

mkpart PART-TYPE [FS-TYPE] START END make a partition

name NUMBER NAME name partition NUMBER as NAME

print [devices|free|list,all|NUMBER] display the partition table, available devices, free space, all found partitions, or a

particular partition

quit exit program

rescue START END rescue a lost partition near START and END

resizepart NUMBER END resize partition NUMBER

rm NUMBER delete partition NUMBER

select DEVICE choose the device to edit

disk_set FLAG STATE change the FLAG on selected device

disk_toggle [FLAG] toggle the state of FLAG on selected device

set NUMBER FLAG STATE change the FLAG on partition NUMBER

toggle [NUMBER [FLAG]] toggle the state of FLAG on partition NUMBER

unit UNIT set the default unit to UNIT

version display the version number and copyright information of GNU Parted

(parted) unit TB

(parted) mkpart primary 0 0

(parted) print

Model: VMware Virtual disk (scsi)

Disk /dev/sdb: 11.0TB

Sector size (logical/physical): 512B/512B

Partition Table: gpt

Disk Flags:

Number Start End Size File system Name Flags

1 0.00TB 0.00TB 0.00TB primary

(parted) mkpart primary 0 11

Warning: You requested a partition from 0.00TB to 11.0TB (sectors 0..21474836479).

The closest location we can manage is 0.00TB to 0.00TB (sectors 34..2047).

Is this still acceptable to you?

Yes/No? n

(parted) p

Model: VMware Virtual disk (scsi)

Disk /dev/sdb: 11.0TB

Sector size (logical/physical): 512B/512B

Partition Table: gpt

Disk Flags:

Number Start End Size File system Name Flags

1 0.00TB 0.00TB 0.00TB primary

(parted) help

align-check TYPE N check partition N for TYPE(min|opt) alignment

help [COMMAND] print general help, or help on COMMAND

mklabel,mktable LABEL-TYPE create a new disklabel (partition table)

mkpart PART-TYPE [FS-TYPE] START END make a partition

name NUMBER NAME name partition NUMBER as NAME

print [devices|free|list,all|NUMBER] display the partition table, available devices, free space, all found partitions, or a

particular partition

quit exit program

rescue START END rescue a lost partition near START and END

resizepart NUMBER END resize partition NUMBER

rm NUMBER delete partition NUMBER

select DEVICE choose the device to edit

disk_set FLAG STATE change the FLAG on selected device

disk_toggle [FLAG] toggle the state of FLAG on selected device

set NUMBER FLAG STATE change the FLAG on partition NUMBER

toggle [NUMBER [FLAG]] toggle the state of FLAG on partition NUMBER

unit UNIT set the default unit to UNIT

version display the version number and copyright information of GNU Parted

(parted) rm 1

(parted) p

Model: VMware Virtual disk (scsi)

Disk /dev/sdb: 11.0TB

Sector size (logical/physical): 512B/512B

Partition Table: gpt

Disk Flags:

Number Start End Size File system Name Flags

(parted) mkpart primary 0 11

(parted) p

Model: VMware Virtual disk (scsi)

Disk /dev/sdb: 11.0TB

Sector size (logical/physical): 512B/512B

Partition Table: gpt

Disk Flags:

Number Start End Size File system Name Flags

1 0.00TB 11.0TB 11.0TB primary

(parted) q

Information: You may need to update /etc/fstab.

$ sudo parted /dev/sdb

GNU Parted 3.1

Using /dev/sdb

Welcome to GNU Parted! Type 'help' to view a list of commands.

(parted) p

Model: VMware Virtual disk (scsi)

Disk /dev/sdb: 11.0TB

Sector size (logical/physical): 512B/512B

Partition Table: gpt

Disk Flags:

Number Start End Size File system Name Flags

1 1049kB 11.0TB 11.0TB primary

(parted) q

$ sudo pvcreate /dev/sdb1

Physical volume "/dev/sdb1" successfully created.

$ sudo vgcreate datavg /dev/sdb1

sudo vgs Volume group "datavg" successfully created

$ sudo vgs

VG #PV #LV #SN Attr VSize VFree

datavg 1 0 0 wz--n- <10.00t <10.00t

vg0 1 4 0 wz--n- <249.00g 4.00m

$ sudo lvcreate -n nesslv -L +99G datavg

Logical volume "nesslv" created.

$ sudo mkfs.xfs /dev/datavg/nesslv

$ sudo lvremove /dev/datavg/nesslvsudo lvremove /dev/datavg/nesslv

$ sudo lvremove /dev/datavg/nesslv

Do you really want to remove active logical volume datavg/nesslv? [y/n]: y

Logical volume "nesslv" successfully removed

$ sudo lvcreate -n nesslv -L +10T datavg

Volume group "datavg" has insufficient free space (2621439 extents): 2621440 required.

$ sudo lvcreate -n nesslv -L +9.9T datavg

Rounding up size to full physical extent 9.90 TiB

Logical volume "nesslv" created.

$ sudo mkfs.xfs /dev/datavg/nesslv

meta-data=/dev/datavg/nesslv isize=512 agcount=10, agsize=268435455 blks

= sectsz=512 attr=2, projid32bit=1

= crc=1 finobt=0, sparse=0

data = bsize=4096 blocks=2657511424, imaxpct=5

= sunit=0 swidth=0 blks

naming =version 2 bsize=4096 ascii-ci=0 ftype=1

log =internal log bsize=4096 blocks=521728, version=2

= sectsz=512 sunit=0 blks, lazy-count=1

realtime =none extsz=4096 blocks=0, rtextents=0

$ sudo vi /etc/fstab

$ sudo mkdir /1opt1

$ df -h

Filesystem Size Used Avail Use% Mounted on

devtmpfs 32G 0 32G 0% /dev

tmpfs 32G 0 32G 0% /dev/shm

tmpfs 32G 20M 32G 1% /run

tmpfs 32G 0 32G 0% /sys/fs/cgroup

/dev/mapper/vg0-root 35G 1.5G 34G 5% /

/dev/mapper/vg0-01 5.0G 100M 4.9G 2% /var/log

/dev/mapper/vg0-00 206G 3.1G 202G 2% /opt

/dev/sda2 1014M 154M 861M 16% /boot

tmpfs 6.3G 0 6.3G 0% /run/user/1001

$ sudo vgs

VG #PV #LV #SN Attr VSize VFree

datavg 1 1 0 wz--n- <10.00t 102.39g

vg0 1 4 0 wz--n- <249.00g 4.00m

$ sudo vi /etc/fstab

$ ls /opt

$ cd /opt

$ sudo du -sh *

3.1G sc

$ more /etc/fstab

# /etc/fstab

# Created by anaconda on Tue Feb 11 05:56:09 2020

# Accessible filesystems, by reference, are maintained under '/dev/disk'

# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info

/dev/mapper/vg0-root / xfs defaults 0 0

UUID=31657a30-d845-4032-8f9b-b48fc75f23ed /boot xfs defaults 0 0

##/dev/mapper/vg0-00 /1opt1 xfs defaults 0 0

/dev/mapper/vg0-01 /var/log xfs nosuid,noexec,nodev 0 0

/dev/mapper/vg0-swap swap swap defaults 0 0

####

/dev/mapper/vg0-00 /1opt1 xfs defaults 0 0

/dev/datavg/nesslv /opt xfs defaults 0 0

$ sudo reboot

Connection to 10.85.98.40 closed by remote host.

Connection to 10.85.98.40 closed.

---------------------------------------------------------------------------------------------------------------------------------

$ ssh admin@192.168..10

$ df -h

Filesystem Size Used Avail Use% Mounted on

devtmpfs 32G 0 32G 0% /dev

tmpfs 32G 0 32G 0% /dev/shm

tmpfs 32G 20M 32G 1% /run

tmpfs 32G 0 32G 0% /sys/fs/cgroup

/dev/mapper/vg0-root 35G 1.6G 34G 5% /

/dev/mapper/vg0-01 5.0G 92M 5.0G 2% /var/log

/dev/sda2 1014M 141M 874M 14% /boot

/dev/mapper/datavg-nesslv 9.9T 33M 9.9T 1% /opt

/dev/mapper/vg0-00 206G 3.1G 202G 2% /1opt1

tmpfs 6.3G 0 6.3G 0% /run/user/1001

$ cd /opt

$ ls

$ cd ..

$ cd /1opt1

$ ls

$ tar -cf /opt/sc.tar sc

tar: /opt/sc.tar: Cannot open: Permission denied

tar: Error is not recoverable: exiting now

$ sudo tar -cf /opt/sc.tar sc

$ du -sh /opt/sc.tar

2.9G /opt/sc.tar

$ cd /opt

$ ls

sc.tar

$ tar -xvf

#!/bin/bash

if [ ! "$(whoami)" == "chante" ]; then

echo "Error: script must be run as the chante user"

exit 1

LinuxTab - A man page a day keeps the trouble away

Monday, March 2, 2020

RHEL - Creating 10TB filesystem on rhel7

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