LUN reached a thin provisioning soft threshold

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Hi guys,

I need a help to solve a problem, so I have a Ubuntu Server 16.04 attached to FreeNAS-11.0-U2 and frequently my ISCSI share down. The server log file in kern.log show this message:

Nov 1 03:27:55 bacula-server kernel: [34484.288887] sd 3:0:0:0: Warning! Received an indication that the LUN reached a thin provisioning soft threshold.
Nov 1 03:27:55 bacula-server kernel: [34484.288969] end_request: I/O error, dev sdb, sector 1833222784
Nov 1 03:27:55 bacula-server kernel: [34484.289103] Aborting journal on device sdb1-8.
Nov 1 03:27:55 bacula-server kernel: [34484.291454] EXT4-fs error (device sdb1): ext4_journal_check_start:56: Detected aborted journal
Nov 1 03:27:55 bacula-server kernel: [34484.291492] EXT4-fs (sdb1): Remounting filesystem read-only
Nov 1 06:25:28 bacula-server kernel: [45143.422517] sd 3:0:0:0: Warning! Received an indication that the LUN reached a thin provisioning soft threshold.
Nov 2 03:28:16 bacula-server kernel: [120954.232961] EXT4-fs (sdb1): error count since last fsck: 2
Nov 2 03:28:16 bacula-server kernel: [120954.232989] EXT4-fs (sdb1): initial error at time 1509517675: ext4_journal_check_start:56
Nov 2 03:28:16 bacula-server kernel: [120954.232995] EXT4-fs (sdb1): last error at time 1509517675: ext4_journal_check_start:56
Nov 3 03:30:04 bacula-server kernel: [207510.380916] EXT4-fs (sdb1): error count since last fsck: 2
Nov 3 03:30:04 bacula-server kernel: [207510.380945] EXT4-fs (sdb1): initial error at time 1509517675: ext4_journal_check_start:56
Nov 3 03:30:04 bacula-server kernel: [207510.380950] EXT4-fs (sdb1): last error at time 1509517675: ext4_journal_check_start:56

I run fsck.ext4 and format the partition many times, I delete and create the ZVOL two times and the error persist! It`s a bug on this FreeNAS version? Misconfiguration on my ZVOL settings?

Thanks in advanced!
 
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