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Disappearing Data

Question asked by harrihokkanen on Jun 8, 2013
Weare running

Alfresco Community 3.3 on Ubuntu 10.04.4 LTS  x86_64 on KVM host running on Scientific Linux 6.4 x86_64 and the alf_data resides on Scientific Linux 6.4 x86_64 NFS mount on bare metal.

We just experienced a heavy thunderstorm hitting city mains and cutting power for a long time.  The NFS and KVM servers UPS died immediately on shock.

The mystery lies that when systems got back online all data on disks on alf_data was two monts old but MySQL data (running on Scientific Linux 5.8 on KVM on  Scientific Linux 6.4 x86_64 host) was accurate. Backup is from two weeks old retention.

The question is how is it possible to loose two months of data on disk when system crashes. Some of the data was recovered from contentstore.deleted…

Any bright ideas???