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diff --git a/2 Areas/Werk/VPS platform/FS aio.md b/2 Areas/Werk/VPS platform/FS aio.md
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+---
+tags:
+  - sysctl
+  - aio
+  - linux
+  - filesystem
+references:
+  - https://docs.kernel.org/admin-guide/sysctl/fs.html
+  - https://man7.org/linux/man-pages/man2/io_setup.2.html
+  - https://sort.veritas.com/public/documents/HSO/2.0/linux/productguides/html/hfo_admin_ubuntu/ch04s03.htm
+---
+aio-nr & aio-max-nr:
+
+```
+aio-nr is the running total of the number of events specified on the
+io_setup system call for all currently active aio contexts.  If aio-nr
+reaches aio-max-nr then io_setup will fail with EAGAIN.  Note that
+raising aio-max-nr does not result in the pre-allocation or re-sizing
+of any kernel data structures.
+```
+
+Openstack compute fs.aio-max-nr naar `1048576` gezet zoals beschreven op het web.
+\ No newline at end of file