Hi,
I added a cache drive to my pool which has secondarycache=none attribute.
But as you see, "secondarycache=none" is beeing ignored and L2ARC is beeing written/filled.
And no there does not exist any other pool with an l2arc.
I added a cache drive to my pool which has secondarycache=none attribute.
Code:
pool: spinning
state: ONLINE
scan: scrub repaired 0B in 04:40:29 with 0 errors on Sun Oct 9 05:04:31 2022
config:
NAME STATE READ WRITE CKSUM
spinning ONLINE 0 0 0
raidz1-0 ONLINE 0 0 0
scsi-35000c5008407606f ONLINE 0 0 0
scsi-35000c50083ef05f7 ONLINE 0 0 0
scsi-35000c5008407449f ONLINE 0 0 0
scsi-35000cca05821a80c ONLINE 0 0 0
cache
ata-Samsung_SSD_850_PRO_512GB_S250NXAG930772J ONLINE 0 0 0
spares
sdd AVAIL
errors: No known data errors
Code:
zfs get -r secondarycache spinning
NAME PROPERTY VALUE SOURCE
spinning secondarycache none local
spinning/backup secondarycache none inherited from spinning
spinning/backup/vm-100-disk-0 secondarycache none inherited from spinning
spinning/backup/vm-100-disk-0@rep_kvm-win_2021-07-15_13:19:14 secondarycache none inherited from spinning
spinning/backup/vm-100-disk-1 secondarycache none inherited from spinning
spinning/backup/vm-100-disk-1@rep_kvm-win_2021-07-15_13:19:14 secondarycache none inherited from spinning
spinning/opnsense secondarycache none inherited from spinning
spinning/subvol-117-disk-0 secondarycache none inherited from spinning
spinning/vm-100-disk-0 secondarycache none inherited from spinning
spinning/vm-100-disk-0@bfnvme secondarycache none inherited from spinning
spinning/vm-100-disk-0@next_try secondarycache none inherited from spinning
spinning/vm-1000-disk-0 secondarycache none inherited from spinning
spinning/vm-104-disk-0-old secondarycache none inherited from spinning
spinning/vm-104-disk-1 secondarycache none inherited from spinning
spinning/vm-206-disk-0 secondarycache none inherited from spinning
spinning/vm-207-disk-0 secondarycache none inherited from spinning
Code:
ZFS Subsystem Report Tue Oct 18 10:58:14 2022
Linux 5.15.39-4-pve 2.1.5-pve1
Machine: proxmox (x86_64) 2.1.5-pve1
L2ARC status: HEALTHY
Low memory aborts: 0
Free on write: 0
R/W clashes: 0
Bad checksums: 0
I/O errors: 0
L2ARC size (adaptive): 8.6 GiB
Compressed: 87.6 % 7.6 GiB
Header size: 0.0 % 0 Bytes
MFU allocated size: 47.6 % 3.6 GiB
MRU allocated size: 53.0 % 4.0 GiB
Prefetch allocated size: < 0.1 % 1.2 MiB
Data (buffer content) allocated size: 97.8 % 7.4 GiB
Metadata (buffer content) allocated size: 2.8 % 215.4 MiB
L2ARC breakdown: 14
Hit ratio: 0.0 % 0
Miss ratio: 100.0 % 14
Feeds: 1.2k
L2ARC writes:
Writes sent: 100 % 534
L2ARC evicts:
Lock retries: 0
Upon reading: 0But as you see, "secondarycache=none" is beeing ignored and L2ARC is beeing written/filled.
And no there does not exist any other pool with an l2arc.