ZFS plugin returns SSD cache errors.
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Hello,
I use the zfs plugin to monitor the zfs pool.
I have added an SSD for cache.
I occasionally get the following error in librenms:
ZFS L2 cache has experienced errors
As far as I understand, the plugin outputs information from:
/proc/spl/kstat/zfs/arcstats
As far as I understand the script takes l2_writes_error, l2_cksum_bad, l2_io_error and outputs them.
I am trying to understand what the errors are and what they are due to.
I call the Dell R720 + HBA to the front backplane.
OS: CentOS 9 Streem
In zpool status I have no SSD errors.
I looked through the logs and I don't see any errors anywhere.
Can anyone direct me to what I should be looking for as a problem or is it just the script reporting wrong
# cat /proc/spl/kstat/zfs/arcstats | grep err
l2_writes_error 4 0
l2_io_error 4 0
l2_rebuild_io_errors 4 0
l2_rebuild_dh_errors 4 0
l2_rebuild_cksum_lb_errors 4 0
# ./scripts/zfs | jq | grep err
"errorString": "",
"error": 0,
"l2_rebuild_cksum_lb_errors": "0",
"l2_writes_error": 0,
"l2_errors": 182,
"l2_rebuild_io_errors": "0",
"l2_io_error": 0,
"l2_rebuild_dh_errors": "0",
# zpool status
pool: gluster
state: ONLINE
configuration:
NAME STATE READ WRITE CKSUM
gluster ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
wwn-0x50014ee2bf64a904 ONLINE 0 0 0
wwn-0x50014ee26a75fb01 ONLINE 0 0 0
mirror-1 ONLINE 0 0 0
scsi-350014ee214b999f7 ONLINE 0 0 0
wwn-0x50014ee2bf649b07 ONLINE 0 0 0
mirror-2 ONLINE 0 0 0
wwn-0x50014ee2bf64ae58 ONLINE 0 0 0
wwn-0x50014ee214b97135 ONLINE 0 0 0
mirror-3 ONLINE 0 0 0
wwn-0x50014ee214b98557 ONLINE 0 0 0
wwn-0x50014ee26a0eb0da ONLINE 0 0 0
cache
scsi-SPliant_LB806M_41061188 ONLINE 0 0 0
spares
scsi-SATA_WDC_WD20EFRX-68E_WD-WCC4M5PKF7P3 AVAIL
errors: No known data errors
Regards,