How to get information about the I/O operations happening on an OSD?

Solution Verified - Updated -

Issue

  • How to get more information about the I/O operations happening on an OSD?

  • Is it possible to get details on the I/O operations which are shown as "blocked", in a Ceph cluster?

  • Is it possible to get information on the blocks I/O ops on each OSD, shown in the output of 'ceph health detail' or 'ceph -s'?

# ceph health detail
HEALTH_WARN 30 requests are blocked > 32 sec; 3 osds have slow requests
30 ops are blocked > 268435 sec
1 ops are blocked > 268435 sec on osd.11
1 ops are blocked > 268435 sec on osd.18
28 ops are blocked > 268435 sec on osd.39
3 osds have slow requests

Environment

  • Red Hat Ceph Storage 1.2.3

  • Red Hat Ceph Storage 1.3

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Using a Red Hat product through a public cloud?

How to access this content