Dataset has disappeared

[leonardorame]

Hi, in a new TrueNAS-12.0-U8.1 a Dataset has disappeared.

The main pool es called Datos and I had a dataset called Backups in there.

I have a couple of replication tasks configured to store data in the destination /Datos. I think the replication has cleared the Datos dataset deleting the Datos/Backup dataset, can this be what happened?

 

[Arwen]

Start with this output from the command line, in code tags;
zfs list -t all -r Datos zpool history Datos | tail -50

 

[leonardorame]

Code:

History for 'Datos':
2022-06-17.08:45:35  zpool create -o feature@lz4_compress=enabled -o altroot=/mnt -o cachefile=/data/zfs/zpool.cache -o failmode=continue -o autoexpand=on -o ashift12 -o feature@async_destroy=enabled -o feature@empty_bpobj=enabled -o feature@multi_vdev_crash_dump=enabled -o feature@spacemap_histogram=enabled -o feature@enabled_txg=enabled -o feature@hole_birth=enabled -o feature@extensible_dataset=enabled -o feature@embedded_data=enabled -o feature@bookmarks=enabled -o feature@filesystem_limits=enabled -o feature@large_blocks=enabled -o feature@large_dnode=enabled -o feature@sha512=enabled -o feature@skein=enabled -o feature@userobj_accounting=enabled -o feature@encryption=enabled -o feature@project_quota=enabled -o feature@device_removal=enabled -o feature@obsolete_counts=enabled -o feature@zpool_checkpoint=enabled -o feature@spacemap_v2=enabled -o feature@allocation_classes=enabled -o feature@resilver_defer=enabled -o feature@bookmark_v2=enabled -o feature@redaction_bookmarks=enabled -o feature@redacted_datasets=enabled -o feature@bookmark_written=enabled -o feature@log_spacemap=enabled -o feature@livelist=enabled -o feature@device_rebuild=enabled -o feature@zstd_compress=enabled -O compression=lz4 -O aclinherit=passthrough -O mountpoint=/Datos -O aclmode=passthrough Datos mirror /dev/gptid/86abd2a4-ee54-11ec-a05f-fc3497e6ffdc /dev/gptid/86b6cad1-ee54-11ec-a05f-fc3497e6ffdc
2022-06-17.08:45:35  zfs inherit  Datos
2022-06-17.08:45:36  zfs create -o mountpoint=legacy -o readonly=off Datos/.system
2022-06-17.08:45:36  zfs create -o mountpoint=legacy -o readonly=off -o quota=1G Datos/.system/cores
2022-06-17.08:45:36  zfs create -o mountpoint=legacy -o readonly=off Datos/.system/samba4
2022-06-17.08:45:36  zfs create -o mountpoint=legacy -o readonly=off Datos/.system/syslog-a617fea1951f4cf0a2768ef9d432a087
2022-06-17.08:45:37  zfs create -o mountpoint=legacy -o readonly=off Datos/.system/rrd-a617fea1951f4cf0a2768ef9d432a087
2022-06-17.08:45:37  zfs create -o mountpoint=legacy -o readonly=off Datos/.system/configs-a617fea1951f4cf0a2768ef9d432a087
2022-06-17.08:45:37  zfs create -o mountpoint=legacy -o readonly=off Datos/.system/webui
2022-06-17.08:45:39  zfs create -o mountpoint=legacy -o readonly=off Datos/.system/services
2022-06-18.04:34:17 zfs recv -s -F -x sharesmb -x mountpoint -x sharenfs Datos/Imagenes
2022-06-18.04:34:17 zfs set readonly=on Datos/Imagenes
2022-06-18.04:34:23 zfs set readonly=on Datos/Imagenes
2022-06-18.19:06:37 zfs set readonly=on Datos
2022-06-18.19:06:42 zfs set readonly=on Datos
2022-06-19.00:00:25 zfs set readonly=on Datos
2022-06-21.06:12:18  zfs set copies=1 Datos
2022-06-21.06:12:23  zfs set readonly=off Datos
2022-06-21.06:12:36  zfs create -o aclmode=passthrough -o casesensitivity=sensitive -o copies=1 -o org.truenas:managedby=192.168.0.14 -o quota=none -o refquota=none -o refreservation=none -o reservation=none -o xattr=sa Datos/Gasalud
2022-06-21.12:33:43  zpool import 11476215872531362359  Datos
2022-06-21.12:33:43  zpool set cachefile=/data/zfs/zpool.cache Datos
2022-06-21.12:33:44  zfs create -o mountpoint=legacy -o readonly=off -o quota=1G Datos/.system/cores
2022-06-21.12:33:44  zfs create -o mountpoint=legacy -o readonly=off Datos/.system/samba4
2022-06-21.12:33:44  zfs create -o mountpoint=legacy -o readonly=off Datos/.system/rrd-a617fea1951f4cf0a2768ef9d432a087
2022-06-21.12:33:44  zfs create -o mountpoint=legacy -o readonly=off Datos/.system/configs-a617fea1951f4cf0a2768ef9d432a087
2022-06-21.12:33:44  zfs create -o mountpoint=legacy -o readonly=off Datos/.system/webui
2022-06-21.12:33:45  zfs create -o mountpoint=legacy -o readonly=off Datos/.system/services
2022-06-22.04:35:01 zfs set readonly=on Datos
2022-06-22.04:36:48 zfs set readonly=on Datos
2022-06-23.05:43:23  zpool import 11476215872531362359  Datos
2022-06-23.05:43:23  zpool set cachefile=/data/zfs/zpool.cache Datos
2022-06-23.05:43:23  zfs create -o mountpoint=legacy -o readonly=off -o quota=1G Datos/.system/cores
2022-06-23.05:43:24  zfs create -o mountpoint=legacy -o readonly=off Datos/.system/rrd-a617fea1951f4cf0a2768ef9d432a087
2022-06-23.05:43:24  zfs create -o mountpoint=legacy -o readonly=off Datos/.system/configs-a617fea1951f4cf0a2768ef9d432a087
2022-06-23.05:43:24  zfs create -o mountpoint=legacy -o readonly=off Datos/.system/webui
2022-06-23.05:43:29  zfs create -o mountpoint=legacy -o readonly=off Datos/.system/services
2022-06-24.04:35:21 zfs set readonly=on Datos
2022-06-24.04:38:35 zfs set readonly=on Datos
2022-06-24.09:34:00  zfs set copies=1 Datos
2022-06-24.09:34:05  zfs set readonly=off Datos
2022-06-24.09:35:44  zfs create -o aclmode=passthrough -o casesensitivity=sensitive -o org.freenas:description=Directorio de Backup de archivos Windows -o copies=1 -o org.truenas:managedby=192.168.0.14 -o quota=none -o refquota=none -o refreservation=none -o reservation=none -o xattr=sa Datos/Backup
2022-07-06.09:55:03  zpool import 11476215872531362359  Datos
2022-07-06.09:55:03  zpool set cachefile=/data/zfs/zpool.cache Datos
2022-07-06.09:55:03  zfs create -o mountpoint=legacy -o readonly=off -o quota=1G Datos/.system/cores
2022-07-06.09:55:03  zfs create -o mountpoint=legacy -o readonly=off Datos/.system/rrd-a617fea1951f4cf0a2768ef9d432a087
2022-07-06.09:55:04  zfs create -o mountpoint=legacy -o readonly=off Datos/.system/configs-a617fea1951f4cf0a2768ef9d432a087
2022-07-06.09:55:04  zfs create -o mountpoint=legacy -o readonly=off Datos/.system/webui
2022-07-06.09:55:06  zfs create -o mountpoint=legacy -o readonly=off Datos/.system/services
2022-07-06.09:55:12  zfs snapshot  Datos/.system/samba4@wbc-1657126507
2022-07-07.04:42:44 zfs set readonly=on Datos
2022-07-07.04:47:03 zfs set readonly=on Datos
2022-07-11.07:11:10  zpool import 11476215872531362359  Datos
2022-07-11.07:11:10  zpool set cachefile=/data/zfs/zpool.cache Datos
2022-07-11.07:11:11  zfs create -o mountpoint=legacy -o readonly=off -o quota=1G Datos/.system/cores
2022-07-11.07:11:11  zfs create -o mountpoint=legacy -o readonly=off Datos/.system/rrd-a617fea1951f4cf0a2768ef9d432a087
2022-07-11.07:11:11  zfs create -o mountpoint=legacy -o readonly=off Datos/.system/configs-a617fea1951f4cf0a2768ef9d432a087
2022-07-11.07:11:11  zfs create -o mountpoint=legacy -o readonly=off Datos/.system/webui
2022-07-11.07:11:14  zfs create -o mountpoint=legacy -o readonly=off Datos/.system/services
2022-07-11.07:11:19  zfs snapshot  Datos/.system/samba4@wbc-1657548674
2022-07-12.04:43:08 zfs set readonly=on Datos
2022-07-12.04:47:25 zfs set readonly=on Datos
2022-07-12.10:29:20  zfs set copies=1 Datos
2022-07-12.10:29:25  zfs set readonly=off Datos
2022-07-12.10:29:34  zfs create -o aclmode=passthrough -o casesensitivity=sensitive -o copies=1 -o org.truenas:managedby=192.168.0.14 -o quota=none -o refquota=none -o refreservation=none -o reservation=none -o xattr=sa Datos/Postgresql
2022-07-12.10:30:20  zfs create -o aclmode=passthrough -o casesensitivity=sensitive -o copies=1 -o org.truenas:managedby=192.168.0.14 -o quota=none -o refquota=none -o refreservation=none -o reservation=none -o xattr=sa Datos/Backup
2022-07-12.10:31:19  zfs create -o aclmode=passthrough -o casesensitivity=sensitive -o copies=1 -o org.truenas:managedby=192.168.0.14 -o quota=none -o refquota=none -o refreservation=none -o reservation=none -o xattr=sa Datos/Imagenes

On 2022-06-24.09:35:44 I created /Datos/Backup. Then on 2022-07-06.09:55:03 I made a zpool import, I think that overwrote my /Datos dataset.

 

[Arwen]

A ZFS pool import won't over-write a pool. However, if you had 2 pools of disks, you could have possibly imported a second one that does not have the Backup data. Or if your Datos pool was modified outside of TrueNAS, that could be a problem.

I don't know what is happening. Perhaps someone else can help further.

Please supply the zfs list -t all -r Datos output