Ramdisk: Difference between revisions
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On critical daq servers (clondaqx) directory ''/et'' have to reside in ramdisk. Create directory ''/et'' | On critical daq servers (clondaqx) directory ''/et'' have to reside in ramdisk. | ||
Create directory ''/et'': | |||
mkdir /et | |||
chmod 777 /et | |||
Add following line in ''/etc/fstab'': | |||
none /et tmpfs nodev,nosuid,noexec,nodiratime,size=4096M 0 0 | none /et tmpfs nodev,nosuid,noexec,nodiratime,size=4096M 0 0 | ||
To activate it without reboot, run following commands: | |||
systemctl daemon-reload | systemctl daemon-reload | ||
mount /et | mount /et | ||
'''General info''' | '''General info''' | ||
Latest revision as of 13:45, 15 January 2026
On critical daq servers (clondaqx) directory /et have to reside in ramdisk.
Create directory /et:
mkdir /et chmod 777 /et
Add following line in /etc/fstab:
none /et tmpfs nodev,nosuid,noexec,nodiratime,size=4096M 0 0
To activate it without reboot, run following commands:
systemctl daemon-reload mount /et
General info
Check available memory size:
free -g
Example of creating 4G ramdisk and mounting it as /mnt/ramdisk:
su mkdir /mnt/ramdisk mount -t tmpfs -o size=4g xfs /mnt/ramdisk