XEN virtual system hang due to hypervisor stall

Solution Unverified - Updated -

Issue

  • XEN virtual system hang due to hypervisor stall:
INFO: task mdsd:2236 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
mdsd            D ffffa0ef8985f6c0     0  2236      1 0x00000080
Call Trace:
 [<ffffffffb35b7ca9>] schedule+0x29/0x70
 [<ffffffffc0397b73>] xfs_log_force_lsn+0x1a3/0x370 [xfs]
 [<ffffffffb2ee1170>] ? wake_up_state+0x20/0x20
 [<ffffffffc037751d>] xfs_file_fsync+0xfd/0x1c0 [xfs]
 [<ffffffffb30930d5>] do_fsync+0x55/0x80
 [<ffffffffb30933c3>] SyS_fdatasync+0x13/0x20
 [<ffffffffb35c539a>] system_call_fastpath+0x25/0x2a

Environment

  • Red Hat Enterprise Linux 7
  • Virtual system backed by XEN hypervisor

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