RedHat 6.7: Extending file system online

#lvextend -L +20G /dev/mapper/hostname_vg-lv_home

#resize2fs /dev/mapper/hostname_vg-lv_home

RedHat 6.7: To install time sync tool in case ntp server is not in network

#cd /root/finish-scripts/

#dmidecode | grep -i vmware

#yum -y --nogpgcheck install vmware-tools-nox

#service vmware-tools restart

#service vmware-tools stop

#service vmware-tools start

#vmware-toolbox-cmd timesync enable

RedHat 6.7: To shrink the file system

1> Unmount the file system

#umount /app/connect

2> perform below steps to shrink the FS

# e2fsck -fy /dev/mapper/hostname_app_vg-aconnect

# df -h

# resize2fs /dev/mapper/hostname_app_vg-aconnect 2G

# vgdisplay

# lvreduce -L 2G /dev/mapper/hostname_app_vg-aconnect

# vgdisplay

#resize2fs /dev/mapper/hostname_app_vg-aconnect

#mount /app/connect

RedHat 6.7: To create VG from a new disk

11>  Check the path of disk

#fdisk –l | grep Disk

22>  Follow below steps to create file system /app/data

#ser=hostname

#vgcreate ${ser}_app_vg /dev/sdb

#lvcreate -L 75G -n alrecordk  ${ser}_app_vg

#mkfs -t ext4 /dev/${ser}_app_vg/alrecordk

#tune2fs -c 0 -i 0 /dev/${ser}_app_vg/alrecordk

#vi /etc/fstab

/dev/temta01l_app_vg/adata   /app/data     ext4    nosuid,nodev,rw 1 2

#mkdir -pm 755 /app/data

#mount /app/data

Solaris 10/11: zfs dataset not mounting

Error: zfs dataset not mounting or mountpoint or dataset is busy
# zfs mount -a
cannot mount 'zpauqXXXXs_T2CL_zones_AS/qXXX057z/pXXX01': mountpoint or dataset is busy

Solution:
1>Check is the mount point is busy.
#fuser /mountpoint
/mountpoint:    24253c   16665c

2> Kill the process using the mountpoint

#kill -9 24253 16665

3>Mount all the zfs file systems

#zfs mount -a