Recover data from a volume - File-based ISCSI Target

[Elias Pereira]

Hello,
We have a FreeNAS-9.10.2-U5 and one ISCSI mount on a debian via file target. A power outage has occurred and after this, the mount on debian shows no data, but when I check the file via ssh on freenas server, it shows the file size, like shown below image.

and via freenas webgui it also shows that there is data on the volume, I believe.

Would there be a way to verify that the file is not corrupted and has some real data in it?

 

[HoneyBadger]

From the ZFS perspective, the iSCSI export is just a single large file. Once it's mounted in your guest OS (Debian) check the dmesg/logs there to see if the filesystem is tagged dirty or otherwise needs an fsck