E-series arrays: udisks-daemon sometimes unmounts filesystem on multipath device during firmware upgrades.

Updated -

Issue:

During controller firmware upgrades on some E-Series storage arrays, filesystems may get unmounted, causing the OS to report multipath failures.

Environment:

RHEL6 - All versions
Some E-Series storage arrays

Diagnostics:

When this condition occurs, systemtap messages similar to the following may be observed:

sys_umount called...

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