RHEL6: Applications or Tools Hang on ext4 Filesystem - Red Hat Customer Portal

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Issue

Filesystem deadlock due to delayed allocation unable to allocate disk space
- sysreq c must be used (or the system rebooted) to recover control
File system commands hang or fail to complete
- Hung commands appear as blocked in ps or top
Application hangs and can not be killed (even with kill -9 <pid>)
service <application> start|stop|restart commands fail to complete

Environment

Red Hat Enterprise Linux 6.5
Red Hat Enterprise Linux 6.4
Red Hat Enterprise Linux 6.3
Red Hat Enterprise Linux 6.2
ext4 filesystem

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