[LU-14717] osd-ldiskfs: set od_readcache_max_filesize with maximal value when setting with negative value via lproc

Sat, 29 May 2021 14:44:57 +0000

# echo -n -1 > /proc/fs/lustre/osd-ldiskfs/lustre0-MDT0000/readcache_max_filesize
-bash: echo: write error: Numerical result out of range

To disable the maximum cached file size on an OST, run:
 root@oss1# lctl set_param obdfilter.{OST_name}.readcache_max_filesize=-1
To check the current maximum cached file size on all OSTs of an OSS, run:
 root@oss1# lctl get_param obdfilter.*.readcache_max_filesize

It would better to set readcache_max_filesize with maximal value when setting with negative value via lproc.

Whamcloud Community JIRA

[LU-14717] osd-ldiskfs: set od_readcache_max_filesize with maximal value when setting with negative value via lproc