Root partition full on RUTX11

My monitoring alerts my that the RUTX11 root partition was full.
Can someone assist how I can find what can be removed to clear space?

Filesystem           Type            Size      Used Available Use% Mounted on
/dev/root            squashfs       19.2M     19.2M         0 100% /
tmpfs                tmpfs         120.5M    356.0K    120.2M   0% /tmp
/dev/ubi0_2          ubifs          85.8M      1.1M     80.3M   1% /overlay
/dev/root            squashfs       19.2M     19.2M         0 100% /rom/etc
overlay              overlay        85.8M      1.1M     80.3M   1% /etc
overlay              overlay        85.8M      1.1M     80.3M   1% /usr/local
/dev/mtdblock15      jffs2         576.0K    344.0K    232.0K  60% /log
tmpfs                tmpfs         512.0K         0    512.0K   0% /dev

Hello,
This is normal /dev/root is a squashfs filesystem on flash it is read-only you can do nothing about it except adding an exception in your monitoring software.
Regards,

That is comforting, thank you. I"ll supress those alerts then.

Hello @DanJ,

Could you please confirm whether your issue has been resolved?

Best regards,

It has thanks.

Hello,

Thank you for confirming.

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Best regards,