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[Q] Is errors=panic safe to use, and will it detect a RAID gone psycho?

I have had in years past seen hardware (SCSI) RAID controllers lose it electronically causing the kernel to fill the logs with scary SCSI messages and ext3 to complain about "holes" in the filesystem like so:

Sep 7 14:47:17 thewarehouse1 kernel: EXT3-fs error (device sd(8,81)): ext3_readdir: directory #376833 contains a hole at offset 0

I'm using drbd and heartbeat so whatever gets written to the hardware RAID gets written independently to a second RAID on a second computer. It would be nice if in the unlikely event hardware failed to cause something bad such as the one aforementioned to trigger the computer to fail entirely and force heartbeat/drbd to kick in on the second computer.

If I set the error behavior with tune2fs to panic, would this happen? That is, is this the type of error that would trigger a panic? Are there minor errors that could unnecessarily trigger one?

Maurice Volaski, mvolaski aecom yu edu
Computing Support, Rose F. Kennedy Center
Albert Einstein College of Medicine of Yeshiva University

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