Software RAID: QoS behavior
Response to double-fault scenario
- a double fault results in unrecoverable loss of data on the RAID volume
-
- Linux: blocked access to volume
- Windows: blocked access to volume
- Solaris: silently continued using volume, delivering fabricated data to application!
- clear violation of RAID availability semantics
- resulted in corrupted file system and garbage data at the application level
- this undocumented policy has serious availability implications for applications