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[GH-ISSUE #78] Option visible but doesn't seem to work #115

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opened 2026-03-09 01:03:24 +03:00 by kerem · 4 comments
kerem commented 2026-03-09 01:03:24 +03:00
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Originally created by @rubenvarela on GitHub (Jul 20, 2024).
Original GitHub issue: https://github.com/007revad/Synology_enable_Deduplication/issues/78

Originally assigned to: @007revad on GitHub.

Trying to set this up, I see the option available when I go to,

Storage Manager > Storage > Volume > ... > Configure Data Deduplication

I see both options, 'Automatic Deduplication' and 'Manual Deduplication'.

Manual Deduplication reads,

  • Status: Ready
  • Last Run Time: -

Automatic Deduplication reads 'Disabled on xxxx'

Under Manual Deduplication, when I select 'Run Now', it shows a quick 'Loading', it then returns, and nothing seems to happen. It still says "Status: Ready".

Happy to dig into it, but I'm trying to find ways of debugging. So far,

  • I don't see anything on Log Center.
  • In /var/log/systemd.log when I click 'Run Now', it adds an entry, systemd[1]: Started Synology Btrfs Deduplication Service.
  • In /var/log/synobtrfsdedupe.log I see,
2024-07-20T11:05:44-04:00 **NASNAME** synobtrfsdedupe[14719]: Delete subvol 9d29145b-9079-1d4f-9675-558f91e7bbea from config and sample index
2024-07-20T11:05:44-04:00 **NASNAME** synobtrfsdedupe[14719]: dedupe/service/service_operation_worker.cpp:15 Exception (dedupe/index/sample_index.cpp:53): Sample index not found: /volume1/@dedupe

if I sudo ls /volume1/@dedupe/ I do see content,

$ sudo ls @dedupe/
dedupe.conf  reset_list

No idea where to go from here.

Originally created by @rubenvarela on GitHub (Jul 20, 2024). Original GitHub issue: https://github.com/007revad/Synology_enable_Deduplication/issues/78 Originally assigned to: @007revad on GitHub. Trying to set this up, I see the option available when I go to, Storage Manager > Storage > Volume > ... > Configure Data Deduplication I see both options, 'Automatic Deduplication' and 'Manual Deduplication'. --- Manual Deduplication reads, - Status: Ready - Last Run Time: - Automatic Deduplication reads 'Disabled on xxxx' --- Under Manual Deduplication, when I select 'Run Now', it shows a quick 'Loading', it then returns, and nothing seems to happen. It still says "Status: Ready". --- Happy to dig into it, but I'm trying to find ways of debugging. So far, - I don't see anything on Log Center. - In `/var/log/systemd.log` when I click 'Run Now', it adds an entry, `systemd[1]: Started Synology Btrfs Deduplication Service.` - In `/var/log/synobtrfsdedupe.log` I see, ``` 2024-07-20T11:05:44-04:00 **NASNAME** synobtrfsdedupe[14719]: Delete subvol 9d29145b-9079-1d4f-9675-558f91e7bbea from config and sample index 2024-07-20T11:05:44-04:00 **NASNAME** synobtrfsdedupe[14719]: dedupe/service/service_operation_worker.cpp:15 Exception (dedupe/index/sample_index.cpp:53): Sample index not found: /volume1/@dedupe ``` if I `sudo ls /volume1/@dedupe/` I do see content, ``` $ sudo ls @dedupe/ dedupe.conf reset_list ``` No idea where to go from here.
kerem closed this issue 2026-03-09 01:03:29 +03:00
kerem commented 2026-03-09 01:03:35 +03:00
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@007revad commented on GitHub (Jul 22, 2024):

Which model Synology do you have?

What does the following command return?

sudo ls -s -h -l /volume1/@dedupe
<!-- gh-comment-id:2241944815 --> @007revad commented on GitHub (Jul 22, 2024): Which model Synology do you have? What does the following command return? ``` sudo ls -s -h -l /volume1/@dedupe ```
kerem commented 2026-03-09 01:03:40 +03:00
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@rubenvarela commented on GitHub (Jul 22, 2024):

Hey @007revad thanks for taking a look!

  • Model: DS1621+
  • DSM: DSM 7.2.1-69057 Update 5
  • Memory: 36 GB

Output of the command,

sudo ls -s -h -l /volume1/@dedupe
Password:
total 4.0K
4.0K -rw------- 1 root root 1.2K Jul 15 19:31 dedupe.conf
   0 -rw------- 1 root root    0 Jun  8 05:26 reset_list
<!-- gh-comment-id:2243262669 --> @rubenvarela commented on GitHub (Jul 22, 2024): Hey @007revad thanks for taking a look! - Model: DS1621+ - DSM: DSM 7.2.1-69057 Update 5 - Memory: 36 GB Output of the command, ```shell sudo ls -s -h -l /volume1/@dedupe Password: total 4.0K 4.0K -rw------- 1 root root 1.2K Jul 15 19:31 dedupe.conf 0 -rw------- 1 root root 0 Jun 8 05:26 reset_list ```
kerem commented 2026-03-09 01:03:45 +03:00
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@rubenvarela commented on GitHub (Jul 27, 2024):

@007revad I tried more stuff but couldn't find a way to fix the state.

What I ended up doing,

  • renamed /volume1/@dedupe to @dedupe.backup
  • restarted the NAS
  • upon booting, @dedupe at this point wasn't created
  • going to storage manager > volume > configure deduplication, was showing under automatic deduplication the previous disabled time.
  • Under manual, I was seeing the option for "Run Now"
  • I selected the "Run Now" option at this point and it's finally showing "Running (0.0%)" and the option for Stop.

If I run the previous ls command, I now see more files under the folder,

$ sudo ls -s -h -l /volume1/@dedupe
total 8.0K
4.0K -rw------- 1 root root 470 Jul 27 12:55 dedupe.conf
   0 -rw------- 1 root root   0 Jul 27 12:55 dup
   0 -rw------- 1 root root   0 Jul 27 12:55 reset_list
4.0K -rw------- 1 root root  32 Jul 27 12:55 sample

Not sure if you'd like more info on setup or the actual backed up files. If not, I'm happy to close this at this point.

<!-- gh-comment-id:2254201031 --> @rubenvarela commented on GitHub (Jul 27, 2024): @007revad I tried more stuff but couldn't find a way to fix the state. What I ended up doing, - renamed `/volume1/@dedupe` to `@dedupe.backup` - restarted the NAS - upon booting, `@dedupe` at this point wasn't created - going to storage manager > volume > configure deduplication, was showing under automatic deduplication the previous disabled time. - Under manual, I was seeing the option for "Run Now" - I selected the "Run Now" option at this point and it's finally showing "Running (0.0%)" and the option for Stop. If I run the previous ls command, I now see more files under the folder, ```bash $ sudo ls -s -h -l /volume1/@dedupe total 8.0K 4.0K -rw------- 1 root root 470 Jul 27 12:55 dedupe.conf 0 -rw------- 1 root root 0 Jul 27 12:55 dup 0 -rw------- 1 root root 0 Jul 27 12:55 reset_list 4.0K -rw------- 1 root root 32 Jul 27 12:55 sample ``` Not sure if you'd like more info on setup or the actual backed up files. If not, I'm happy to close this at this point.
kerem commented 2026-03-09 01:03:50 +03:00
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@007revad commented on GitHub (Jul 27, 2024):

Thanks for the feedback.

So the solution would be:

  1. Rename or delete the volume's @dedupe
  2. Reboot the NAS.

I had assumed I'd be able to provide you the missing file(s) to put in /volume1/@dedupe but after your previous reply I noticed I have a 1/volumeX@dedupe` folder for each volume that I've had dedupe enabled on. And the files in them are different sizes. Then I forgot to reply. Sorry.

# ls -s -h -l /volume1/@dedupe
total 65M
4.0K -rw------- 1 root root  676 Jul 23 18:29 dedupe.conf
 64M -rw------- 1 root root  64M Jul 23 18:29 dup
   0 -rw------- 1 root root 256M Jan 10  2024 hole.cow
   0 -rw------- 1 root root 256M Jan 10  2024 hole.nocow
   0 -rw------- 1 root root    0 Jul 23 18:30 reset_list
960K -rw------- 1 root root 957K Jul 23 18:29 sample

# ls -s -h -l /volume2/@dedupe
total 8.0K
4.0K -rw------- 1 root root  354 Jul 19 20:00 dedupe.conf
   0 -rw------- 1 root root    0 Jul 19 19:49 dup
   0 -rw------- 1 root root 256M Jul 19 20:00 hole.cow
   0 -rw------- 1 root root 256M Jul 19 20:00 hole.nocow
   0 -rw------- 1 root root    0 Jul 19 20:00 reset_list
4.0K -rw------- 1 root root   32 Jul 19 19:49 sample
<!-- gh-comment-id:2254260483 --> @007revad commented on GitHub (Jul 27, 2024): Thanks for the feedback. So the solution would be: 1. Rename or delete the volume's `@dedupe` 2. Reboot the NAS. I had assumed I'd be able to provide you the missing file(s) to put in `/volume1/@dedupe` but after your previous reply I noticed I have a 1/volumeX@dedupe` folder for each volume that I've had dedupe enabled on. And the files in them are different sizes. Then I forgot to reply. Sorry. ``` # ls -s -h -l /volume1/@dedupe total 65M 4.0K -rw------- 1 root root 676 Jul 23 18:29 dedupe.conf 64M -rw------- 1 root root 64M Jul 23 18:29 dup 0 -rw------- 1 root root 256M Jan 10 2024 hole.cow 0 -rw------- 1 root root 256M Jan 10 2024 hole.nocow 0 -rw------- 1 root root 0 Jul 23 18:30 reset_list 960K -rw------- 1 root root 957K Jul 23 18:29 sample # ls -s -h -l /volume2/@dedupe total 8.0K 4.0K -rw------- 1 root root 354 Jul 19 20:00 dedupe.conf 0 -rw------- 1 root root 0 Jul 19 19:49 dup 0 -rw------- 1 root root 256M Jul 19 20:00 hole.cow 0 -rw------- 1 root root 256M Jul 19 20:00 hole.nocow 0 -rw------- 1 root root 0 Jul 19 20:00 reset_list 4.0K -rw------- 1 root root 32 Jul 19 19:49 sample ```
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