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Bug #833
open
ZPOOL cache device is emptied after rebooot
Status:
New
Priority:
Normal
Assignee:
-
Category:
zfs - Zettabyte File System
Start date:
2011-03-18
Due date:
% Done:
0%
Estimated time:
Difficulty:
Tags:
Gerrit CR:
External Bug:
Description
I have configured a spare partition from the oi_148a boot drive to be the L2ARC cache device for the data pool residing on dedicated disks of my home NAS.
I was under the impression that L2ARC data should survive reboots and speed up the system with actual cached data as soon as the pool is mounted (imported).
While this cache is automatically re-attached after reboot, it is empty and has to be repopulated from scratch during the system's each uptime. This seems wrong...
//Jim Klimov
Related issues
Updated by Garrett D'Amore over 12 years ago
- Project changed from OpenIndiana Distribution to illumos gate
Updated by Garrett D'Amore over 12 years ago
- Category set to zfs - Zettabyte File System
This is a known "feature". We'd like to add persistence to the L2ARC at some day, but for now it starts over... the entire cache can be rebuilt over time anyway. (With performance degradation right after a reboot.)
Updated by Gergő Mihály Doma about 6 years ago
- Related to Feature #3525: Persistent L2ARC added
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