Portion of disk being randomly overwritten
Issue
- Portions of beginning of an LVM physical volume are being over-written at random intervals
- This results in "unknown device" errors in lvm output and the need to recover from lvm metadata backup
- Need to determine what process is accessing the disk at these intervals
- Unable to access data
- File system data corruption
- Missing volume group
Environment
- Red Hat Enterprise Linux
- Storage being randomly over-written for reasons unknown
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