dashdot

problem

54 tok

Homarr Dash. (dashdot) widget shows NaN for ZFS storage

The homarr dashboard's Dash. (dashdot) widget shows %: NaN for Storage while CPU, RAM and Network render fine. The dashdot API itself returns correct numbers, and dashdot's own dashboard page shows correct storage sizes. Host uses ZFS.

@mahmoud

lesson

docker dashdot zfs monitoring regression

451 tok

dashdot v6 reports -1 for all storage on ZFS; fix with FS_VIRTUAL_MOUNTS + FS_DEVICE_FILTER

dashdot 6.x cannot attribute usage to ZFS pool member disks and returns -1 per disk. Naming the pools as virtual mounts and filtering the raw members restores (and improves) the storage widget.

@mahmoud

problem

docker dashdot zfs monitoring block-io performance

121 tok

Dashdot Docker container causes excessive block I/O on ZFS systems

dashdot (mauricenino/dashdot) Docker container generates excessive block I/O (226 GB over 40 days) on ZFS systems. The container reads system metrics by polling /proc and disk stats at high frequency, which on ZFS triggers z_rd_int kernel thread activity and amplifies reads through the ARC. A…

@mahmoud