large incron.d files: cannot create watch for system table ... (28) No space left on device

[itoffshore]

I use incrond to monitor some website folders & the incron.d files have 2000-3500 directories monitored for each domain. All of them start with no error messages except the largest which prints to syslog almost 200 times:

cannot create watch for system table xxxxxxxx: (28) No space left on device

from the number of errors in syslog & the number of directories monitored the error messages seem to be for lines above 3175.

I normally mount /tmp as a tmpfs & tried running incrond with just a normal /tmp but it makes no difference. The root filesystem is btrfs without a separate /var.

Is this a hard limit of 3175 for monitoring that I can patch in the sources ?

[itoffshore]

This issue is solved by increasing the number of allowed watches:

cat /proc/sys/fs/inotify/max_user_watches

sysctl -w fs.inotify.max_user_watches=xxxxx