March 10, 20242 yr Hi, a while ago I converted one of my array disks (4TB) to zfs as a target for cache replication. I later converted another 8TB disk to zfs. All was running fine, but yesterday I noticed that my DVD collection (DVD backups as folders on the array) had some movies missing. I know the collection was fine after I converted the second disk to zfs, because I made mkvs from all DVD folders afterwards. Now the folders are still there, but they are empty. Not all folders on the 8TB disk are affected, but every empty folder has "root" as its owner, while the others are owned by "nobody". I have not checked every folder yet, but that is the general pattern. I have all the original discs and all DVDs as mkvs, so the data loss is not that important, but I would like to know what might have gone wrong, to prevent it in the future.
March 10, 20242 yr Community Expert 1 hour ago, CountZ said: Now the folders are still there, but they are empty. These folders are inside a share right? Also are they regular folders or datasets? Post the output of zfs list -t all
March 10, 20242 yr Author Thanks for your repply. Here is the output: root@Tower:~# zfs list -t all NAME USED AVAIL REFER MOUNTPOINT cache 1.27T 497G 249G /mnt/cache cache/MKV-MPEG2 748G 497G 748G /mnt/cache/MKV-MPEG2 cache/MKVTest 160K 497G 160K /mnt/cache/MKVTest cache/appdata 288G 497G 286G /mnt/cache/appdata cache/appdata@autosnap_2024-01-26_11:51:57_monthly 0B - 284G - cache/appdata@autosnap_2024-01-26_11:51:57_weekly 0B - 284G - cache/appdata@autosnap_2024-01-26_11:51:57_daily 0B - 284G - cache/appdata@syncoid_Tower_2024-01-26:11:51:57-GMT01:00 0B - 284G - cache/domains 8.58G 497G 8.58G /mnt/cache/domains cache/isos 128K 497G 128K /mnt/cache/isos cache/system 6.34G 497G 6.34G /mnt/cache/system disk2 2.50T 4.64T 356G /mnt/disk2 disk2/3d-Drucker 59.2M 4.64T 59.2M /mnt/disk2/3d-Drucker disk2/Backup 1.37T 4.64T 1.37T /mnt/disk2/Backup disk2/Bilder 120K 4.64T 120K /mnt/disk2/Bilder disk2/DVD 198G 4.64T 198G /mnt/disk2/DVD disk2/Downloads 659M 4.64T 659M /mnt/disk2/Downloads disk2/MKV-MPEG2 416G 4.64T 416G /mnt/disk2/MKV-MPEG2 disk2/MKV-Medien 328K 4.64T 328K /mnt/disk2/MKV-Medien disk2/steamcache 194G 4.64T 194G /mnt/disk2/steamcache disk4 1.03T 2.49T 96K /mnt/disk4 disk4/zfs_backups 1.03T 2.49T 112K /mnt/disk4/zfs_backups disk4/zfs_backups/cache_appdata 283G 2.49T 283G /mnt/disk4/zfs_backups/cache_appdata disk4/zfs_backups/cache_appdata@autosnap_2024-01-26_11:51:57_monthly 0B - 283G - disk4/zfs_backups/cache_appdata@autosnap_2024-01-26_11:51:57_weekly 0B - 283G - disk4/zfs_backups/cache_appdata@autosnap_2024-01-26_11:51:57_daily 0B - 283G - disk4/zfs_backups/cache_appdata@syncoid_Tower_2024-01-26:11:51:57-GMT01:00 0B - 283G - disk4/zfs_backups/cache_domains 38.1G 2.49T 38.1G /mnt/disk4/zfs_backups/cache_domains disk4/zfs_backups/cache_domains@autosnap_2023-11-10_12:24:03_monthly 0B - 38.1G - disk4/zfs_backups/cache_domains@autosnap_2023-11-10_12:24:03_weekly 0B - 38.1G - disk4/zfs_backups/cache_domains@autosnap_2023-11-10_12:24:03_daily 0B - 38.1G - disk4/zfs_backups/cache_domains@syncoid_Tower_2023-11-10:12:24:03-GMT01:00 0B - 38.1G - disk4/zfs_backups/fikwot_MKV-Medien 593G 2.49T 136K /mnt/disk4/zfs_backups/fikwot_MKV-Medien disk4/zfs_backups/fikwot_MKV-Medien@syncoid_Tower_2024-01-26:08:07:48-GMT01:00 0B - 136K - disk4/zfs_backups/fikwot_MKV-Medien/Aufnahmen 60.3G 2.49T 60.3G /mnt/disk4/zfs_backups/fikwot_MKV-Medien/Aufnahmen disk4/zfs_backups/fikwot_MKV-Medien/Aufnahmen@syncoid_Tower_2024-01-26:08:07:49-GMT01:00 0B - 60.3G - disk4/zfs_backups/fikwot_MKV-Medien/Dokus 96K 2.49T 96K /mnt/disk4/zfs_backups/fikwot_MKV-Medien/Dokus disk4/zfs_backups/fikwot_MKV-Medien/Dokus@syncoid_Tower_2024-01-26:08:07:51-GMT01:00 0B - 96K - disk4/zfs_backups/fikwot_MKV-Medien/Filme 533G 2.49T 533G /mnt/disk4/zfs_backups/fikwot_MKV-Medien/Filme disk4/zfs_backups/fikwot_MKV-Medien/Filme@syncoid_Tower_2024-01-26:08:07:52-GMT01:00 0B - 533G - disk4/zfs_backups/fikwot_MKV-Medien/Musikvideos 96K 2.49T 96K /mnt/disk4/zfs_backups/fikwot_MKV-Medien/Musikvideos disk4/zfs_backups/fikwot_MKV-Medien/Musikvideos@syncoid_Tower_2024-01-26:10:25:20-GMT01:00 0B - 96K - disk4/zfs_backups/fikwot_MKV-Medien/Serien 96K 2.49T 96K /mnt/disk4/zfs_backups/fikwot_MKV-Medien/Serien disk4/zfs_backups/fikwot_MKV-Medien/Serien@syncoid_Tower_2024-01-26:10:25:28-GMT01:00 0B - 96K - disk4/zfs_backups/fikwot_Musik 137G 2.49T 137G /mnt/disk4/zfs_backups/fikwot_Musik disk4/zfs_backups/fikwot_Musik@syncoid_Tower_2023-12-07:09:42:09-GMT01:00 0B - 137G -
March 10, 20242 yr Author Sorry I forgot to mention it. It is disk2/DVD/Filme/. In there are all the movie folders, some are owned by nobody and they are fine as far as I checked them and the others are owned by root and they are empty. There are other folders below DVD and they exibit the same problem. Owned by nobody and they are fine, owned by root and all contents are gone.
March 10, 20242 yr Community Expert So there are not datasets inside that folder, meaning very unlikely the issue has anything to do with zfs, all folders created on a share should be owned by nobody, never root, what did you use to copy the data?
March 10, 20242 yr Author Hm, I remember I followed spaceinvaders tutorial to convert an array disk to zfs, on all other disks everything is owned by nobody, only the last 60 folders on disk2 are owned by root.
March 10, 20242 yr Community Expert Difficult to say. Could be any copy method that was not done over the network.
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