Errors with same files over and over

[snowe2010]

Hi, I just started using restic/backrest on my server (have been using backrest and restic on my laptop for a while now). I created a new repo yesterday, started pushing to a remote s3 bucket. But 3 files are failing to backup, every time. I'm able to open the files from my server just fine, they are video files and work perfectly the entire way through. But the backup fails and I cannot figure out why. I've signed up for the restic forums, but they require an admin to approve you and I haven't been approved yet, so I thought I'd ask here first and if I need to go ask there when I get access.

[repo-manager] 11:08:34.931Z	debug	repo orchestrator starting backup	{"repo": "wasabi-s3-photography-backup", "repo": "wasabi-s3-photography-backup"}

[restic] 11:08:34.931Z	debug	command: "/bin/restic snapshots --json -o sftp.args=-oBatchMode=yes --tag plan:wasabi-s3-photography-backup,created-by:unraid"

[restic] 11:08:36.404Z	debug	[{"time":"2025-09-04T13:43:13.438210464-04:00","tree":"8cf5d5094392ac0f618530558bd9ab93e19eea09991621bd8d4d5fa7c2e0aec4","paths":["/backup"],"hostname":"fe72cf5e1199","username":"redact","tags":["plan:wasabi-s3-photography-backup","created-by:unraid"],"program_version":"restic 0.18.0","summary":{"backup_start":"2025-09-04T13:43:13.438210464-04:00","backup_end":"2025-09-04T21:52:27.721184903-04:00","files_new":61065,"files_changed":0,"files_unmodified":0,"dirs_new":6482,"dirs_changed":0,"dirs_unmodified":0,"data_blobs":1476058,"tree_blobs":6476,"data_added":1813540978736,"data_added_packed":1798992271304,"total_files_processed":61065,"total_bytes_processed":1893997253744},"id":"e049f4b8a1c9edef4746caade5cd0c2390398619c35a25734d3715083166cf1d","short_id":"e049f4b8"},{"time":"2025-09-05T00:34:07.924180592-04:00","parent":"9a801927f7c1b9f09e6c18fc28a47b082af02ca9eb12e89231ef40d532ebd08a","tree":"6bdd23b5c3b95bad488154c95362b3151b245ac66b9c053eeacce9c8ef24cf2f","paths":["/backup"],"hostname":"fe72cf5e1199","username":"redact","tags":["plan:wasabi-s3-photography-backup","created-by:unraid"],"program_version":"restic 0.18.0","summary":{"backup_start":"2025-09-05T00:34:07.924180592-04:00","backup_end":"2025-09-05T00:36:07.624793832-04:00","files_new":0,"files_changed":9,"files_unmodified":61056,"dirs_new":0,"dirs_changed":2,"dirs_unmodified":6480,"data_blobs":0,"tree_blobs":3,"data_added":6177096,"data_added_packed":3191593,"total_files_processed":61065,"total_bytes_processed":1893997253744},"id":"ff569b1ac8d6435a8860f63dfdee19e80ef960269807c185df994f691b9d57f9","short_id":"ff569b1a"}]

[repo-manager] 11:08:36.455Z	debug	got snapshots for plan	{"repo": "wasabi-s3-photography-backup", "repo": "wasabi-s3-photography-backup", "count": 2, "plan": "wasabi-s3-photography-backup", "tag": "plan:wasabi-s3-photography-backup"}

[repo-manager] 11:08:36.455Z	debug	starting backup	{"repo": "wasabi-s3-photography-backup", "plan": "wasabi-s3-photography-backup"}

[restic] 11:08:36.456Z	debug	command: "/bin/restic backup --json /backup -o sftp.args=-oBatchMode=yes --exclude-caches --tag plan:wasabi-s3-photography-backup --tag created-by:unraid --parent ff569b1ac8d6435a8860f63dfdee19e80ef960269807c185df994f691b9d57f9"

[tasklog] 11:10:04.526Z	warn	backup for plan "wasabi-s3-photography-backup"	error processing item	{"item": "/backup/DJI/DJI_20241013112319_0007_D.MP4", "error": {"message":"failed to save /backup/DJI/DJI_20241013112319_0007_D.MP4: read /backup/DJI/DJI_20241013112319_0007_D.MP4: input/output error"}}

[tasklog] 11:10:04.551Z	warn	backup for plan "wasabi-s3-photography-backup"	error processing item	{"item": "/backup/DJI/DJI_20241013132014_0015_D.MP4", "error": {"message":"failed to save /backup/DJI/DJI_20241013132014_0015_D.MP4: read /backup/DJI/DJI_20241013132014_0015_D.MP4: input/output error"}}

[tasklog] 11:10:32.692Z	warn	backup for plan "wasabi-s3-photography-backup"	error processing item	{"item": "/backup/Insta360/DCIM/damaged drive/DCIM/Camera01/VID_20230922_125044_10_012.insv", "error": {"message":"failed to save /backup/Insta360/DCIM/damaged drive/DCIM/Camera01/VID_20230922_125044_10_012.insv: read /backup/Insta360/DCIM/damaged drive/DCIM/Camera01/VID_20230922_125044_10_012.insv: input/output error"}}

[tasklog] 11:10:34.310Z	info	backup for plan "wasabi-s3-photography-backup"	backup complete	{"plan": "wasabi-s3-photography-backup", "duration": 119.37959667, "summary": "summary:{files_unmodified:61065 dirs_changed:7 dirs_unmodified:6475 tree_blobs:6 data_added:17243638 total_files_processed:61065 total_bytes_processed:1893997253744 total_duration:117.679365409 snapshot_id:\"ec3db17a41a59e46e6652a5cfa9cb5f6e8aae79a19583b316fdb77caf7996de4\"}"}

[tasklog] 11:10:34.317Z	info	backup for plan "wasabi-s3-photography-backup"	task finished	{"duration": 119.386874236}

[snowe2010]

the issue is either my cache drive or restic being unable to handle unraid cache drives. Moving the files off the cache to another disk allowed restic to complete its backup.