matticustard
Cadet
- Joined
- Nov 2, 2023
- Messages
- 4
Thank you for looking.
Software: TrueNAS-SCALE-22.12.4.2
Motherboard make and model: Supermicro X9DR3-F
CPU make and model: 2x Intel Xeon E5-2697V2
RAM quantity: 128GB ECC
Network cards: 10Gtek with Intel 82599EN (Compare to Intel X520-DA2)
Hard disk controllers: 1x LSI 9207-8i, 2x LSI 9207-8e (all IT mode)
While this does not account for every disk in the system (47 total), the following list should be sufficient for the purpose of this post.
Pool: Archive
-- Hard drives: 6x HGST Ultrastar HUH728080ALE601 8TB 7200RPM SATA 6Gb/s 3.5" Hard Drive
---- Configuration: Striped mirror (3 zvol, 2 disks/zvol)
-- Hard drives: 3x Samsung MZILS1T9HCHP-000C3 1.92tb Solid State Drive (DEDUPLICATION VOLUME)
---- Configuration: Mirror (1 zvol)
Usable capacity: 50.47TiB
Used: 32.99 TiB
Available: 17.48 TiB
Percent: 65.4%
Usable capacity: 22TiB
Used: 4 TiB
Available: 17.48 TiB
Percent: 23%
1. Is this the intended behavior?
2. If yes, why is this the intended behavior?
3. Is my volume going to begin showing over-usage errors when the Storage Dashboard exceeds 80% usage, despite being nowhere near that actual usage?
System
Software: TrueNAS-SCALE-22.12.4.2
Motherboard make and model: Supermicro X9DR3-F
CPU make and model: 2x Intel Xeon E5-2697V2
RAM quantity: 128GB ECC
Network cards: 10Gtek with Intel 82599EN (Compare to Intel X520-DA2)
Hard disk controllers: 1x LSI 9207-8i, 2x LSI 9207-8e (all IT mode)
While this does not account for every disk in the system (47 total), the following list should be sufficient for the purpose of this post.
Pool: Archive
-- Hard drives: 6x HGST Ultrastar HUH728080ALE601 8TB 7200RPM SATA 6Gb/s 3.5" Hard Drive
---- Configuration: Striped mirror (3 zvol, 2 disks/zvol)
-- Hard drives: 3x Samsung MZILS1T9HCHP-000C3 1.92tb Solid State Drive (DEDUPLICATION VOLUME)
---- Configuration: Mirror (1 zvol)
Problem
I have a pool that relies heavily on deduplication with a current ratio of ~1/10. Instead of displaying actual disk usage, the Storage Dashboard displays the total amount of referenced data (i.e. it adds up all deduplicated data) to determine the amount of used data and then adds this amount to the remaining space when calculating total usable capacity. This leads to a very inaccurate overview of disk usage.What I see in the Storage Dashboard:
--Values from image above--Usable capacity: 50.47TiB
Used: 32.99 TiB
Available: 17.48 TiB
Percent: 65.4%
What I expect to see in the Storage Dashboard:
--Approximate values given--Usable capacity: 22TiB
Used: 4 TiB
Available: 17.48 TiB
Percent: 23%
Questions
1. Is this the intended behavior?
2. If yes, why is this the intended behavior?
3. Is my volume going to begin showing over-usage errors when the Storage Dashboard exceeds 80% usage, despite being nowhere near that actual usage?
Deduplication stats
Code:
bucket allocated referenced
______ ______________________________ ______________________________
refcnt blocks LSIZE PSIZE DSIZE blocks LSIZE PSIZE DSIZE
------ ------ ----- ----- ----- ------ ----- ----- -----
1 23.2M 2.88T 2.69T 2.69T 23.2M 2.88T 2.69T 2.69T
2 7.13M 888G 872G 873G 16.5M 2.00T 1.97T 1.97T
4 1.05M 119G 108G 108G 5.94M 658G 590G 591G
8 603K 63.5G 54.8G 54.9G 6.75M 724G 627G 628G
16 948K 115G 97.4G 97.5G 21.9M 2.65T 2.25T 2.25T
32 1.44M 174G 149G 149G 58.0M 6.82T 5.83T 5.83T
64 120K 14.2G 10.8G 10.8G 10.0M 1.18T 934G 934G
128 18.4K 1.46G 1.11G 1.12G 2.93M 230G 177G 179G
256 526K 63.4G 48.5G 48.5G 162M 19.6T 15.0T 15.0T
512 25.6K 3.02G 2.68G 2.68G 17.0M 2.00T 1.78T 1.78T
1K 2.19K 254M 223M 224M 3.22M 375G 330G 330G
2K 579 63.8M 51.4M 51.5M 1.51M 170G 132G 132G
4K 1.11K 139M 134M 135M 4.93M 615G 588G 588G
8K 29 2.31M 542K 548K 317K 24.9G 5.81G 5.86G
16K 6 286K 40K 40K 123K 5.96G 811M 811M
32K 3 164K 12.5K 16K 136K 8.78G 561M 697M
64K 2 85.5K 16K 16K 139K 5.79G 1.08G 1.08G
128K 1 41.5K 8K 8K 129K 5.25G 1.01G 1.01G
Total 35.1M 4.29T 4.00T 4.01T 335M 39.9T 32.8T 32.8T
