Change retention config to multi tiers

Hi !

Problem/Question

Having this config for retention

[global]
        dbengine multihost disk space = 1280

With that, I have about one week of metrics (seconds)

Would like to activate multi tier for longer retention

[db]
        mode = dbengine
        # Tier 0, per second data for a week
        dbengine multihost disk space = 1280
        storage tiers = 3
        # Tier 1, per minute data for a month
        dbengine tier 1 multihost disk space MB = 330
        # Tier 2, per hour data for a year
        dbengine tier 2 multihost disk space MB = 67

When I activate this config, I lose my history of one week.

Doc

Environment/Browser/Agent’s version etc

RHEL7 / netdata 1.36.1 from RPM package got form netdata - Repositories · packagecloud

What I expected to happen

Activate multi tiers but keep history.

Is there a way to do that ?

Hi @pdgaaa !

We’ve discussed this a bit, and we think that the data are not actually lost, rather they are not returned by the query properly when asked from by the dashboard for the 1 week duration.

Can I assume also by the way you state the problem, that when you revert the changes to netdata.conf (i.e. keep only one tier as before), you get your history back?

If so, most likely, by trying a nightly build or waiting for tomorrow’s stable release, you should be good to go with enabling the extra tiers and also seeing your history (latest nightlies have changes to the query engine to properly return older data such in your case when enabling extra tiers).

Hi @Manolis_Vasilakis, thanks for the reply :slight_smile:

I revert to the former config but the history is still lost.

I try on another server.

Config Before

[global]
        dbengine multihost disk space = 1280

Data directory

root@host (BAS)  /var/cache/netdata
$ ll -R
.:
total 23384
-rw-r-----. 1 netdata netdata 12468224 Nov 30 09:27 anomaly-detection.db
-rw-r-----. 1 netdata netdata    16384 Nov 28 10:08 context-meta.db
-rw-r-----. 1 netdata netdata    32768 Nov 28 10:08 context-meta.db-shm
-rw-r-----. 1 netdata netdata    24752 Nov 28 10:08 context-meta.db-wal
drwxrwx---. 2 netdata netdata     4096 Nov 30 03:40 dbengine
-rw-r-----. 1 netdata netdata  5914624 Nov 30 09:27 netdata-meta.db
-rw-r-----. 1 netdata netdata    32768 Nov 30 09:27 netdata-meta.db-shm
-rw-r-----. 1 netdata netdata  5438432 Nov 30 09:27 netdata-meta.db-wal

./dbengine:
total 1281700
-rw-------. 1 netdata netdata 67129344 Nov 23 07:42 datafile-1-0000000596.ndf
-rw-------. 1 netdata netdata 67112960 Nov 23 17:39 datafile-1-0000000597.ndf
-rw-------. 1 netdata netdata 67149824 Nov 24 03:36 datafile-1-0000000598.ndf
-rw-------. 1 netdata netdata 67112960 Nov 24 13:34 datafile-1-0000000599.ndf
-rw-------. 1 netdata netdata 67133440 Nov 24 23:48 datafile-1-0000000600.ndf
-rw-------. 1 netdata netdata 67186688 Nov 25 09:45 datafile-1-0000000601.ndf
-rw-------. 1 netdata netdata 67121152 Nov 25 19:43 datafile-1-0000000602.ndf
-rw-------. 1 netdata netdata 67125248 Nov 26 05:57 datafile-1-0000000603.ndf
-rw-------. 1 netdata netdata 67117056 Nov 26 15:54 datafile-1-0000000604.ndf
-rw-------. 1 netdata netdata 67108864 Nov 27 01:56 datafile-1-0000000605.ndf
-rw-------. 1 netdata netdata 67117056 Nov 27 11:49 datafile-1-0000000606.ndf
-rw-------. 1 netdata netdata 67137536 Nov 27 22:03 datafile-1-0000000607.ndf
-rw-------. 1 netdata netdata 67153920 Nov 28 08:01 datafile-1-0000000608.ndf
-rw-------. 1 netdata netdata 67112960 Nov 28 18:23 datafile-1-0000000609.ndf
-rw-------. 1 netdata netdata 67112960 Nov 29 04:20 datafile-1-0000000610.ndf
-rw-------. 1 netdata netdata 67108864 Nov 29 14:35 datafile-1-0000000611.ndf
-rw-------. 1 netdata netdata 67121152 Nov 30 00:32 datafile-1-0000000612.ndf
-rw-------. 1 netdata netdata 59129856 Nov 30 09:27 datafile-1-0000000613.ndf
-rw-------. 1 netdata netdata  6127616 Nov 23 07:42 journalfile-1-0000000596.njf
-rw-------. 1 netdata netdata  6168576 Nov 23 17:39 journalfile-1-0000000597.njf
-rw-------. 1 netdata netdata  6168576 Nov 24 03:36 journalfile-1-0000000598.njf
-rw-------. 1 netdata netdata  6144000 Nov 24 13:34 journalfile-1-0000000599.njf
-rw-------. 1 netdata netdata  6201344 Nov 24 23:48 journalfile-1-0000000600.njf
-rw-------. 1 netdata netdata  6283264 Nov 25 09:45 journalfile-1-0000000601.njf
-rw-------. 1 netdata netdata  6230016 Nov 25 19:43 journalfile-1-0000000602.njf
-rw-------. 1 netdata netdata  6213632 Nov 26 05:57 journalfile-1-0000000603.njf
-rw-------. 1 netdata netdata  6205440 Nov 26 15:54 journalfile-1-0000000604.njf
-rw-------. 1 netdata netdata  6238208 Nov 27 01:56 journalfile-1-0000000605.njf
-rw-------. 1 netdata netdata  6299648 Nov 27 11:49 journalfile-1-0000000606.njf
-rw-------. 1 netdata netdata  6217728 Nov 27 22:03 journalfile-1-0000000607.njf
-rw-------. 1 netdata netdata  6221824 Nov 28 08:01 journalfile-1-0000000608.njf
-rw-------. 1 netdata netdata  6496256 Nov 28 18:23 journalfile-1-0000000609.njf
-rw-------. 1 netdata netdata  6516736 Nov 29 04:20 journalfile-1-0000000610.njf
-rw-------. 1 netdata netdata  6328320 Nov 29 14:35 journalfile-1-0000000611.njf
-rw-------. 1 netdata netdata  6377472 Nov 30 00:32 journalfile-1-0000000612.njf
-rw-------. 1 netdata netdata  5582848 Nov 30 09:24 journalfile-1-0000000613.njf

After config, with just changing the following and restarting netdata

[db]
        dbengine multihost disk space = 1280

Data dir after

root@lashsm5a (BAS)  /var/cache/netdata
$ ll -R
.:
total 23460
-rw-r-----. 1 netdata netdata 12480512 Nov 30 09:35 anomaly-detection.db
-rw-r-----. 1 netdata netdata    16384 Nov 30 09:44 context-meta.db
-rw-r-----. 1 netdata netdata    32768 Nov 30 09:44 context-meta.db-shm
-rw-r-----. 1 netdata netdata    24752 Nov 30 09:44 context-meta.db-wal
drwxrwx---. 2 netdata netdata     4096 Nov 30 09:45 dbengine
-rw-r-----. 1 netdata netdata  5980160 Nov 30 09:45 netdata-meta.db
-rw-r-----. 1 netdata netdata    32768 Nov 30 09:46 netdata-meta.db-shm
-rw-r-----. 1 netdata netdata  5438432 Nov 30 09:46 netdata-meta.db-wal

./dbengine:
total 210484
-rw-------. 1 netdata netdata 67108864 Nov 29 14:35 datafile-1-0000000611.ndf
-rw-------. 1 netdata netdata 67121152 Nov 30 00:32 datafile-1-0000000612.ndf
-rw-------. 1 netdata netdata 62275584 Nov 30 09:44 datafile-1-0000000613.ndf
-rw-------. 1 netdata netdata     4096 Nov 30 09:44 datafile-1-0000000614.ndf
-rw-------. 1 netdata netdata  6328320 Nov 29 14:35 journalfile-1-0000000611.njf
-rw-------. 1 netdata netdata  6377472 Nov 30 00:32 journalfile-1-0000000612.njf
-rw-------. 1 netdata netdata  6291456 Nov 30 09:44 journalfile-1-0000000613.njf
-rw-------. 1 netdata netdata     4096 Nov 30 09:44 journalfile-1-0000000614.njf
Logs
$ grep datafile /var/log/netdata/error.log
2022-11-30 09:44:53: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000596.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Matched file "/var/cache/netdata/dbengine/datafile-1-0000000596.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000597.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Matched file "/var/cache/netdata/dbengine/datafile-1-0000000597.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000598.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Matched file "/var/cache/netdata/dbengine/datafile-1-0000000598.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000599.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Matched file "/var/cache/netdata/dbengine/datafile-1-0000000599.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000600.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Matched file "/var/cache/netdata/dbengine/datafile-1-0000000600.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000601.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Matched file "/var/cache/netdata/dbengine/datafile-1-0000000601.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000602.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Matched file "/var/cache/netdata/dbengine/datafile-1-0000000602.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000603.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Matched file "/var/cache/netdata/dbengine/datafile-1-0000000603.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000604.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Matched file "/var/cache/netdata/dbengine/datafile-1-0000000604.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000605.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Matched file "/var/cache/netdata/dbengine/datafile-1-0000000605.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000606.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Matched file "/var/cache/netdata/dbengine/datafile-1-0000000606.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000607.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Matched file "/var/cache/netdata/dbengine/datafile-1-0000000607.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000608.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Matched file "/var/cache/netdata/dbengine/datafile-1-0000000608.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000609.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Matched file "/var/cache/netdata/dbengine/datafile-1-0000000609.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000610.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Matched file "/var/cache/netdata/dbengine/datafile-1-0000000610.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000611.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Matched file "/var/cache/netdata/dbengine/datafile-1-0000000611.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000612.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Matched file "/var/cache/netdata/dbengine/datafile-1-0000000612.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000613.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Matched file "/var/cache/netdata/dbengine/datafile-1-0000000613.ndf"
2022-11-30 09:44:53: netdata INFO  : MAIN : Initializing data file "/var/cache/netdata/dbengine/datafile-1-0000000596.ndf".
2022-11-30 09:44:53: netdata INFO  : MAIN : Data file "/var/cache/netdata/dbengine/datafile-1-0000000596.ndf" initialized (size:67129344).
2022-11-30 09:44:53: netdata INFO  : MAIN : Initializing data file "/var/cache/netdata/dbengine/datafile-1-0000000597.ndf".
2022-11-30 09:44:53: netdata INFO  : MAIN : Data file "/var/cache/netdata/dbengine/datafile-1-0000000597.ndf" initialized (size:67112960).
2022-11-30 09:44:53: netdata INFO  : MAIN : Initializing data file "/var/cache/netdata/dbengine/datafile-1-0000000598.ndf".
2022-11-30 09:44:53: netdata INFO  : MAIN : Data file "/var/cache/netdata/dbengine/datafile-1-0000000598.ndf" initialized (size:67149824).
2022-11-30 09:44:53: netdata INFO  : MAIN : Initializing data file "/var/cache/netdata/dbengine/datafile-1-0000000599.ndf".
2022-11-30 09:44:53: netdata INFO  : MAIN : Data file "/var/cache/netdata/dbengine/datafile-1-0000000599.ndf" initialized (size:67112960).
2022-11-30 09:44:53: netdata INFO  : MAIN : Initializing data file "/var/cache/netdata/dbengine/datafile-1-0000000600.ndf".
2022-11-30 09:44:53: netdata INFO  : MAIN : Data file "/var/cache/netdata/dbengine/datafile-1-0000000600.ndf" initialized (size:67133440).
2022-11-30 09:44:53: netdata INFO  : MAIN : Initializing data file "/var/cache/netdata/dbengine/datafile-1-0000000601.ndf".
2022-11-30 09:44:53: netdata INFO  : MAIN : Data file "/var/cache/netdata/dbengine/datafile-1-0000000601.ndf" initialized (size:67186688).
2022-11-30 09:44:53: netdata INFO  : MAIN : Initializing data file "/var/cache/netdata/dbengine/datafile-1-0000000602.ndf".
2022-11-30 09:44:53: netdata INFO  : MAIN : Data file "/var/cache/netdata/dbengine/datafile-1-0000000602.ndf" initialized (size:67121152).
2022-11-30 09:44:53: netdata INFO  : MAIN : Initializing data file "/var/cache/netdata/dbengine/datafile-1-0000000603.ndf".
2022-11-30 09:44:53: netdata INFO  : MAIN : Data file "/var/cache/netdata/dbengine/datafile-1-0000000603.ndf" initialized (size:67125248).
2022-11-30 09:44:54: netdata INFO  : MAIN : Initializing data file "/var/cache/netdata/dbengine/datafile-1-0000000604.ndf".
2022-11-30 09:44:54: netdata INFO  : MAIN : Data file "/var/cache/netdata/dbengine/datafile-1-0000000604.ndf" initialized (size:67117056).
2022-11-30 09:44:54: netdata INFO  : MAIN : Initializing data file "/var/cache/netdata/dbengine/datafile-1-0000000605.ndf".
2022-11-30 09:44:54: netdata INFO  : MAIN : Data file "/var/cache/netdata/dbengine/datafile-1-0000000605.ndf" initialized (size:67108864).
2022-11-30 09:44:54: netdata INFO  : MAIN : Initializing data file "/var/cache/netdata/dbengine/datafile-1-0000000606.ndf".
2022-11-30 09:44:54: netdata INFO  : MAIN : Data file "/var/cache/netdata/dbengine/datafile-1-0000000606.ndf" initialized (size:67117056).
2022-11-30 09:44:54: netdata INFO  : MAIN : Initializing data file "/var/cache/netdata/dbengine/datafile-1-0000000607.ndf".
2022-11-30 09:44:54: netdata INFO  : MAIN : Data file "/var/cache/netdata/dbengine/datafile-1-0000000607.ndf" initialized (size:67137536).
2022-11-30 09:44:54: netdata INFO  : MAIN : Initializing data file "/var/cache/netdata/dbengine/datafile-1-0000000608.ndf".
2022-11-30 09:44:54: netdata INFO  : MAIN : Data file "/var/cache/netdata/dbengine/datafile-1-0000000608.ndf" initialized (size:67153920).
2022-11-30 09:44:54: netdata INFO  : MAIN : Initializing data file "/var/cache/netdata/dbengine/datafile-1-0000000609.ndf".
2022-11-30 09:44:54: netdata INFO  : MAIN : Data file "/var/cache/netdata/dbengine/datafile-1-0000000609.ndf" initialized (size:67112960).
2022-11-30 09:44:54: netdata INFO  : MAIN : Initializing data file "/var/cache/netdata/dbengine/datafile-1-0000000610.ndf".
2022-11-30 09:44:54: netdata INFO  : MAIN : Data file "/var/cache/netdata/dbengine/datafile-1-0000000610.ndf" initialized (size:67112960).
2022-11-30 09:44:54: netdata INFO  : MAIN : Initializing data file "/var/cache/netdata/dbengine/datafile-1-0000000611.ndf".
2022-11-30 09:44:54: netdata INFO  : MAIN : Data file "/var/cache/netdata/dbengine/datafile-1-0000000611.ndf" initialized (size:67108864).
2022-11-30 09:44:54: netdata INFO  : MAIN : Initializing data file "/var/cache/netdata/dbengine/datafile-1-0000000612.ndf".
2022-11-30 09:44:54: netdata INFO  : MAIN : Data file "/var/cache/netdata/dbengine/datafile-1-0000000612.ndf" initialized (size:67121152).
2022-11-30 09:44:54: netdata INFO  : MAIN : Initializing data file "/var/cache/netdata/dbengine/datafile-1-0000000613.ndf".
2022-11-30 09:44:54: netdata INFO  : MAIN : Data file "/var/cache/netdata/dbengine/datafile-1-0000000613.ndf" initialized (size:62275584).
2022-11-30 09:44:54: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000596.ndf"
2022-11-30 09:44:54: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000597.ndf"
2022-11-30 09:44:54: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000598.ndf"
2022-11-30 09:44:54: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000599.ndf"
2022-11-30 09:44:54: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000600.ndf"
2022-11-30 09:44:54: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000601.ndf"
2022-11-30 09:44:54: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000602.ndf"
2022-11-30 09:44:54: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000603.ndf"
2022-11-30 09:44:54: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000604.ndf"
2022-11-30 09:44:54: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000605.ndf"
2022-11-30 09:44:54: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000606.ndf"
2022-11-30 09:44:54: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000607.ndf"
2022-11-30 09:44:54: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000608.ndf"
2022-11-30 09:44:54: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000609.ndf"
2022-11-30 09:44:54: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000610.ndf"
2022-11-30 09:44:54: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000611.ndf"
2022-11-30 09:44:54: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000612.ndf"
2022-11-30 09:44:54: netdata INFO  : MAIN : Scanning file "/var/cache/netdata/dbengine/datafile-1-0000000613.ndf"
2022-11-30 09:44:55: netdata INFO  : MAIN : Created data file "/var/cache/netdata/dbengine/datafile-1-0000000614.ndf".
2022-11-30 09:44:55: netdata INFO  : MAIN : Deleting data file "/var/cache/netdata/dbengine/datafile-1-0000000596.ndf".
2022-11-30 09:44:56: netdata INFO  : MAIN : Deleted data file "/var/cache/netdata/dbengine/datafile-1-0000000596.ndf".
2022-11-30 09:44:56: netdata INFO  : MAIN : Deleting data file "/var/cache/netdata/dbengine/datafile-1-0000000597.ndf".
2022-11-30 09:44:57: netdata INFO  : MAIN : Deleted data file "/var/cache/netdata/dbengine/datafile-1-0000000597.ndf".
2022-11-30 09:44:57: netdata INFO  : MAIN : Deleting data file "/var/cache/netdata/dbengine/datafile-1-0000000598.ndf".
2022-11-30 09:44:58: netdata INFO  : MAIN : Deleted data file "/var/cache/netdata/dbengine/datafile-1-0000000598.ndf".
2022-11-30 09:44:58: netdata INFO  : MAIN : Deleting data file "/var/cache/netdata/dbengine/datafile-1-0000000599.ndf".
2022-11-30 09:44:59: netdata INFO  : MAIN : Deleted data file "/var/cache/netdata/dbengine/datafile-1-0000000599.ndf".
2022-11-30 09:44:59: netdata INFO  : MAIN : Deleting data file "/var/cache/netdata/dbengine/datafile-1-0000000600.ndf".
2022-11-30 09:45:00: netdata INFO  : MAIN : Deleted data file "/var/cache/netdata/dbengine/datafile-1-0000000600.ndf".
2022-11-30 09:45:00: netdata INFO  : MAIN : Deleting data file "/var/cache/netdata/dbengine/datafile-1-0000000601.ndf".
2022-11-30 09:45:01: netdata INFO  : MAIN : Deleted data file "/var/cache/netdata/dbengine/datafile-1-0000000601.ndf".
2022-11-30 09:45:01: netdata INFO  : MAIN : Deleting data file "/var/cache/netdata/dbengine/datafile-1-0000000602.ndf".
2022-11-30 09:45:02: netdata INFO  : MAIN : Deleted data file "/var/cache/netdata/dbengine/datafile-1-0000000602.ndf".
2022-11-30 09:45:02: netdata INFO  : MAIN : Deleting data file "/var/cache/netdata/dbengine/datafile-1-0000000603.ndf".
2022-11-30 09:45:03: netdata INFO  : MAIN : Deleted data file "/var/cache/netdata/dbengine/datafile-1-0000000603.ndf".
2022-11-30 09:45:03: netdata INFO  : MAIN : Deleting data file "/var/cache/netdata/dbengine/datafile-1-0000000604.ndf".
2022-11-30 09:45:04: netdata INFO  : MAIN : Deleted data file "/var/cache/netdata/dbengine/datafile-1-0000000604.ndf".
2022-11-30 09:45:04: netdata INFO  : MAIN : Deleting data file "/var/cache/netdata/dbengine/datafile-1-0000000605.ndf".
2022-11-30 09:45:05: netdata INFO  : MAIN : Deleted data file "/var/cache/netdata/dbengine/datafile-1-0000000605.ndf".
2022-11-30 09:45:05: netdata INFO  : MAIN : Deleting data file "/var/cache/netdata/dbengine/datafile-1-0000000606.ndf".
2022-11-30 09:45:06: netdata INFO  : MAIN : Deleted data file "/var/cache/netdata/dbengine/datafile-1-0000000606.ndf".

So, changing dbengine multihost disk space from [global] section to [db] section seems to be the problem.

Hi @pdgaaa really sorry this happened.

However, when the change from taking this option from [global] to [db], the option name slightly changed as well. It is now: dbengine multihost disk space MB instead of dbengine multihost disk space.

So most likely that is the cause. And since when taking it in [db] section, Netdata could not read this option and defaulted to another value. Can you try with MB ?

That’s it ! the MB

I’m experiencing some strange display issue when I select more than last 8 hours, but not when I’m scrolling to the left or selecting an absolute start/end date. I will test the nightly rpm if I have some time otherwise I will wait the next stable.

Okay, sorry I missed it on my previous reply…

The other issue sounds like a query engine issue. There have been lots of fixes since 1.36.1 there, we would be very interested to hear your thoughts after testing next stable!

Everything is ok with 1.37.1. No more issue with query engine.

Thanks for the follow up!