I have a question regarding size of mirrors in my pool,
i have a pool consisting of 12x3tb SAS drives configured as 6 mirrors, I am starting to investigate improvement
of read speed but i saw something strange when looking at the pool, 5 of the mirrors are very similar but one is larger
and more full. this is one volume for VM data stores being accessed using ISCSI.
It is just my assumption but i thought they should all be similar, they were all added at pool creation,
here is a zpool list -v output, the mirror i am talking about is BOLD, if this is no big deal or common i am fine
with that, i just wanted to know if it could be a problem
Hardware details
Dell R510
128 G Ram
Intel 10G Nic's
12x 3TB Seagate SAS 6G 7200
Dell H200 (IT flash)
120 gig SSD SLOG
480 G SSD L2arc
i have a pool consisting of 12x3tb SAS drives configured as 6 mirrors, I am starting to investigate improvement
of read speed but i saw something strange when looking at the pool, 5 of the mirrors are very similar but one is larger
and more full. this is one volume for VM data stores being accessed using ISCSI.
It is just my assumption but i thought they should all be similar, they were all added at pool creation,
here is a zpool list -v output, the mirror i am talking about is BOLD, if this is no big deal or common i am fine
with that, i just wanted to know if it could be a problem
Code:
root@freenas130[~]# zpool list -v
NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT
VOL1 10.9T 3.60T 7.28T - - 34% 33% 1.00x ONLINE /mnt
mirror 1.81T 517G 1.31T - - 30% 27%
gptid/b4f6fdc0-e489-11e9-9e06-782bcb157326 - - - - - - -
gptid/be887255-e489-11e9-9e06-782bcb157326 - - - - - - -
mirror 1.81T 525G 1.30T - - 30% 28%
gptid/e674b30f-e489-11e9-9e06-782bcb157326 - - - - - - -
gptid/f00a2a2a-e489-11e9-9e06-782bcb157326 - - - - - - -
mirror 1.81T 538G 1.29T - - 30% 28%
gptid/074335af-e48a-11e9-9e06-782bcb157326 - - - - - - -
gptid/10e122b6-e48a-11e9-9e06-782bcb157326 - - - - - - -
mirror 1.81T 534G 1.29T - - 29% 28%
gptid/210dd1f3-e48a-11e9-9e06-782bcb157326 - - - - - - -
gptid/24bf9065-e48a-11e9-9e06-782bcb157326 - - - - - - -
mirror 1.81T 556G 1.27T - - 31% 29%
gptid/2f6bbb6e-e48a-11e9-9e06-782bcb157326 - - - - - - -
gptid/332e89c4-e48a-11e9-9e06-782bcb157326 - - - - - - -
mirror 1.81T 1016G 840G - - 54% 54%
gptid/3cddf60c-e48a-11e9-9e06-782bcb157326 - - - - - - -
gptid/3dd48a9a-e48a-11e9-9e06-782bcb157326 - - - - - - -
log - - - - - -
gptid/d2b9cff8-e489-11e9-9e06-782bcb157326 119G 20K 119G - - 0% 0%
cache - - - - - -
gptid/d09cff85-e489-11e9-9e06-782bcb157326 477G 377G 100G - - 0% 79%
freenas-boot 119G 764M 118G - - - 0% 1.00x ONLINE -
ada0p2 119G 764M 118G - - - 0%Hardware details
Dell R510
128 G Ram
Intel 10G Nic's
12x 3TB Seagate SAS 6G 7200
Dell H200 (IT flash)
120 gig SSD SLOG
480 G SSD L2arc
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