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Fix bug where an empty snapshot prevented adding an iSCSI extent

Description

On a fresh install of FreeNAS 11.2-U4.1, it is not possible to add an iSCSI extent. The Angular UI does not show any ZVOL devices in the Device drop-down, and the legacy UI throws an exception.

The only recent bugs I could find relating to extents were due to spaces in snapshots or pool names (of which I have neither). This same configuration was used previously in 11.1 without issue.

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SmartDraw Connector

Katalon Manual Tests (BETA)

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Bonnie Follweiler August 19, 2019 at 2:08 PM

Test Passed in TrueNAS-11.2-INTERNAL-32

Bug Clerk July 10, 2019 at 3:17 PM

Bug Clerk July 4, 2019 at 1:03 PM

William Gryzbowski June 18, 2019 at 12:16 PM

Thanks, that was very helpful.

Stephen Cluff June 18, 2019 at 6:20 AM
Edited

I did some additional testing on this today. Installed 11.1-U7, and was able to configure extents. Upgraded to 11.2-U4.1, and was still able to configure extents. After upgrading:

root@inception:~ # midclt call zfs.snapshot.query '[]' '{"select": ["name"], "order_by": ["name"]}' [{"name": "freenas-boot/ROOT/11.2-U4.1@2019-06-17-03:38:32", "pool": "freenas-boot"}, {"name": "freenas-boot/ROOT/11.2-U4.1@2019-06-17-22:53:48", "pool": "freenas-boot"}]

If I remove these boot environments, leaving no snapshots in the system, I am no longer able to create extents:

root@inception:~ # midclt call zfs.snapshot.query '[]' '{"select": ["name"], "order_by": ["name"]}' [{"name": "", "pool": ""}]

If I subsequently clone the boot environment (which creates a snapshot), I am once again able to create extents:

root@inception:~ # midclt call zfs.snapshot.query '[]' '{"select": ["name"], "order_by": ["name"]}' [{"name": "freenas-boot/ROOT/11.2-U4.1@2019-06-17-23:18:04", "pool": "freenas-boot"}]

It seems like it is impossible to create extents if there is not at least one snapshot in the system.

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Katalon Platform

Created June 17, 2019 at 1:50 AM
Updated July 1, 2022 at 4:35 PM
Resolved August 19, 2019 at 2:14 PM
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