[LU-13871] lower than and greater than compare operator support for PCC rule

Duplicate — Mon, 1 May 2023 16:43:16 +0000

There are increasing requirements to add lower than/greater than compare operator for the PCC rules:

File data that is larger than local disk capacity should not auto cache in PCC;
A range of UID/GID/ProjID could be auto cached on PCC;

The following rule expressions are supported:

lctl pcc add /mnt/lustre /mnt/pcc -p "projid={100}&size>{1M}&size<{500G}"
lctl pcc add /mnt/lustre /mnt/pcc -p "projid>{100}&projid<{110}"
lctl pcc add /mnt/lustre /mnt/pcc -p "uid<{1500}&uid>{1000}"

Whamcloud Community JIRA

[LU-13871] lower than and greater than compare operator support for PCC rule