[OmniOS-discuss] l2arc cache size 16.0E

Artyom Zhandarovsky bardishe at gmail.com
Sat Nov 26 18:46:43 UTC 2016


Hi everyone.

I have a situation with incorrect size of l2arc cache ssd`s, as for me this
is because of compression
current compressratio is

DR_data/volume_0                       compressratio  1.69x  -

Is there some fix to solve, cause i think it is not good. But if it wont
affect system stability well i think i can live with this sometime...
size of SSD`s is 200Gb


                capacity     operations    bandwidth
pool         alloc   free   read  write   read  write
-----------  -----  -----  -----  -----  -----  -----
DR_data      2.85T  40.6T      0     80  19.1K   831K
  raidz1      981G  13.5T      0     21  11.4K   196K
    c4t1d0       -      -      0      6  1.65K  29.8K
    c4t2d0       -      -      0      4  1.56K  28.7K
    c4t3d0       -      -      0      6  1.10K  29.6K
    c4t4d0       -      -      0      5  1.65K  29.0K
    c4t5d0       -      -      0      6  1.56K  30.2K
    c4t6d0       -      -      0      6  1.56K  29.5K
    c4t7d0       -      -      0      6  1.74K  29.9K
    c4t8d0       -      -      0      6    563  29.8K
  raidz1      949G  13.6T      0     21      0   201K
    c4t10d0      -      -      0      6      0  30.4K
    c4t11d0      -      -      0      5      0  29.5K
    c4t12d0      -      -      0      6      0  30.2K
    c4t13d0      -      -      0      5      0  29.7K
    c4t14d0      -      -      0      6      0  30.7K
    c4t15d0      -      -      0      6      0  30.5K
    c4t16d0      -      -      0      6      0  30.5K
    c4t9d0       -      -      0      6      0  30.5K
  raidz1      991G  13.5T      0     20  7.71K   159K
    c4t17d0      -      -      0      6  1.10K  24.8K
    c4t18d0      -      -      0      5    563  24.4K
    c4t19d0      -      -      0      5  1.19K  24.5K
    c4t20d0      -      -      0      6    563  24.5K
    c4t21d0      -      -      0      5  1.10K  24.4K
    c4t22d0      -      -      0      4  1.10K  23.1K
    c4t23d0      -      -      0      5  1.10K  24.3K
    c4t24d0      -      -      0      5  1.01K  23.8K
logs             -      -      -      -      -      -
  c1t1d0     4.82M   186G      0      8      0   144K
  c1t2d0     4.73M   186G      0      8      0   131K
cache            -      -      -      -      -      -
*  c1t3d0      291G  16.0E      0      0  3.30K      0*
*  c1t4d0      291G  16.0E      0      0  15.8K      0*
-----------  -----  -----  -----  -----  -----  -----

oot at kup-san-02:/root# zpool status -v DR_data
  pool: DR_data
 state: ONLINE
  scan: none requested
config:

        NAME         STATE     READ WRITE CKSUM
        DR_data      ONLINE       0     0     0
          raidz1-0   ONLINE       0     0     0
            c4t1d0   ONLINE       0     0     0
            c4t2d0   ONLINE       0     0     0
            c4t3d0   ONLINE       0     0     0
            c4t4d0   ONLINE       0     0     0
            c4t5d0   ONLINE       0     0     0
            c4t6d0   ONLINE       0     0     0
            c4t7d0   ONLINE       0     0     0
            c4t8d0   ONLINE       0     0     0
          raidz1-1   ONLINE       0     0     0
            c4t10d0  ONLINE       0     0     0
            c4t11d0  ONLINE       0     0     0
            c4t12d0  ONLINE       0     0     0
            c4t13d0  ONLINE       0     0     0
            c4t14d0  ONLINE       0     0     0
            c4t15d0  ONLINE       0     0     0
            c4t16d0  ONLINE       0     0     0
            c4t9d0   ONLINE       0     0     0
          raidz1-2   ONLINE       0     0     0
            c4t17d0  ONLINE       0     0     0
            c4t18d0  ONLINE       0     0     0
            c4t19d0  ONLINE       0     0     0
            c4t20d0  ONLINE       0     0     0
            c4t21d0  ONLINE       0     0     0
            c4t22d0  ONLINE       0     0     0
            c4t23d0  ONLINE       0     0     0
            c4t24d0  ONLINE       0     0     0
        logs
          c1t1d0     ONLINE       0     0     0
          c1t2d0     ONLINE       0     0     0
        cache
          c1t3d0     ONLINE       0     0     0
          c1t4d0     ONLINE       0     0     0
        spares
          c4t0d0     AVAIL

errors: No known data errors
root at kup-san-02:/root#

root at kup-san-02:/root# zpool list -v DR_data
NAME          SIZE  ALLOC   FREE  EXPANDSZ   FRAG    CAP  DEDUP  HEALTH
 ALTROOT
DR_data      43.5T  2.85T  40.6T         -     4%     6%  1.00x  ONLINE  -
  raidz1     14.5T   981G  13.5T         -     4%     6%
    c4t1d0       -      -      -         -      -      -
    c4t2d0       -      -      -         -      -      -
    c4t3d0       -      -      -         -      -      -
    c4t4d0       -      -      -         -      -      -
    c4t5d0       -      -      -         -      -      -
    c4t6d0       -      -      -         -      -      -
    c4t7d0       -      -      -         -      -      -
    c4t8d0       -      -      -         -      -      -
  raidz1     14.5T   949G  13.6T         -     4%     6%
    c4t10d0      -      -      -         -      -      -
    c4t11d0      -      -      -         -      -      -
    c4t12d0      -      -      -         -      -      -
    c4t13d0      -      -      -         -      -      -
    c4t14d0      -      -      -         -      -      -
    c4t15d0      -      -      -         -      -      -
    c4t16d0      -      -      -         -      -      -
    c4t9d0       -      -      -         -      -      -
  raidz1     14.5T   991G  13.5T         -     4%     6%
    c4t17d0      -      -      -         -      -      -
    c4t18d0      -      -      -         -      -      -
    c4t19d0      -      -      -         -      -      -
    c4t20d0      -      -      -         -      -      -
    c4t21d0      -      -      -         -      -      -
    c4t22d0      -      -      -         -      -      -
    c4t23d0      -      -      -         -      -      -
    c4t24d0      -      -      -         -      -      -
log              -      -      -         -      -      -
  c1t1d0      186G  5.13M   186G         -     8%     0%
  c1t2d0      186G  5.13M   186G         -     7%     0%
cache            -      -      -         -      -      -
  c1t3d0      186G   291G  16.0E         -     0%   156%
  c1t4d0      186G   291G  16.0E         -     0%   156%
spare            -      -      -         -      -      -
  c4t0d0         -      -      -         -      -      -
root at kup-san-02:/root#
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