Skip to content
View in the app

A better way to browse. Learn more.

Unraid

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

[Update] Cache Pool - Unmountable: Unsupported or No File System

Featured Replies

I woke up this morning to all of my docker containers being gone.  I dug in a bit more and found the following message for my Cache Pool where the appdata folder resides:

 

Unmountable: Unsupported or No File System

 

Not sure how this happened, and I'm not great at troubleshooting it.  I'm not sure if something got corrupted?

 

I run the backup utility, and it ran last night, so I have all my appdata.  Just wondering if there is a quick way to restore this?

 

I've attached my diagnostics

dmitri-diagnostics-20231030-0654.zip

 

Edit: Changed from solved to add details below.

Edited by BAlGaInTl

Solved by JorgeB

  • Community Expert
  • Solution

If the log tree is the only problem this may help:

 

btrfs rescue zero-log /dev/nvme0n1p1

 

Then restart the array.

  • Author

Thanks.  That worked.

 

Any insight as to 'why' this could happen?  I don't see any issues with the drives themselves.

  • BAlGaInTl changed the title to [Solved] Cache Pool - Unmountable: Unsupported or No File System
  • Community Expert
18 minutes ago, BAlGaInTl said:

Any insight as to 'why' this could happen?

Difficult to say, if there weren't any unclean shutdowns could be just a btrfs issue.

  • Author
1 hour ago, JorgeB said:

Difficult to say, if there weren't any unclean shutdowns could be just a btrfs issue.

 

Thanks.

 

I'll keep an eye on it. 

  • BAlGaInTl changed the title to [Update] Cache Pool - Unmountable: Unsupported or No File System
  • Author

So I've been keeping an eye on it.  It's happened two more times now over the last week.

 

I'm not sure how to track down why this is happening.  The btrfs rescue command and restarting the array fixes it, but I don't want to keep having this issue.  I'm at a loss on how to fix it permanently.

 

Any help is appreciated.

  • Community Expert

If the problem is recurring suggest backing up and reformatting the pool.

  • Author

Are there easy instructions for this, or would it be as simple as:

 

1 - move all my appdata and other cache shares to the array

2 - Kill the cache pool

3 - recreate the cache pool from scratch

4 - move everything back to the pool

 

?

 

I'm sure I can do some searches on how to accomplish this exactly, but any help is appreciated.

 

  • Community Expert

Basically that's it, you can use the mover to move the data if you want, to re-format you can click on the pool, then "erase", then start array and re-format.

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.