[Official] Solving storage discrepancies

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amungar
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Re: Problems with the available capacity of a disk

Unread post by amungar » Mon May 07, 2018 7:09 pm

Thank you

The trash is empty. The storage management utility shows that ALL is normal. There is no warning.


I'm afraid I'll have to ask for technical assistance from Synology. That implies that they must enter my NAS with authorization. What should I do to authorize them? Thank you

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Twisted World
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Re: Problems with the available capacity of a disk

Unread post by Twisted World » Mon May 07, 2018 7:41 pm

I'd say; Install Storage Analyzer and have it generate a report. I always resort to this app whenever I am wondering where the heck all my storage space has gone. :roll:

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EpicLPer
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Re: [Official] Solving storage discrepancies

Unread post by EpicLPer » Mon May 07, 2018 8:10 pm

Okay, I'm completely confused now... There's almost NOTHING anymore on my NAS, the volume1 reports 3TB being used via SSH but DSM still says almost 14TB...
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I am using the latest Beta for my DS916+ but that shouldn't bring such a weird problem up. At least I don't think so...

amungar
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Re: Problems with the available capacity of a disk

Unread post by amungar » Mon May 07, 2018 8:49 pm

thank you

i'll try your advice

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Re: Problems with the available capacity of a disk

Unread post by amungar » Mon May 07, 2018 9:10 pm

The result is normal. I see the list of folders and their contents. But the total occupied capacity is 100%. How can I attach the screenshot here so you can see it?

[img]Copy%20the%20screen%20but%20I%20can%20not%20insert%20the%20contents%20of%20the%20clipboard%20here[/img]

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Re: Problems with the available capacity of a disk

Unread post by Twisted World » Mon May 07, 2018 9:21 pm

amungar wrote:How can I attach the screenshot here so you can see it?
Unfortunately there is no upload functionality on this forum. I always just put the image on my personal website and then embed the file location inside the [ img ] tags. So if you want to share the image in here, you'll need to upload it somewhere else and then put the link in here inside the img tags. Sorry. :?
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amungar
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Re: Problems with the available capacity of a disk

Unread post by amungar » Tue May 08, 2018 1:30 pm

I have verified that the widget on the right side of the screen shows that the content of the disk is 7.21 TB (and 3.3 GB free). However, the page that shows the contents of all the discs says that the content of this disc is 5.3 TB. There is a clear discrepancy of the O.S. of Synology, because both data do not match. And they must coincide. What comes to your mind? Thank you very much for trying to help me. I appreciate it a lot.

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Re: Problems with the available capacity of a disk

Unread post by Twisted World » Tue May 08, 2018 3:17 pm

With the current info I don't really have an idea. :(

You only told us that you have a 8 TB drive dedicated to movies and a DS415play unit. The 415 can hold 4 drives. Do you have any other installed? Is the 8 TB in a volume all by itself, no redundancy? What is the complete setup of your disks exactly?
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Re: [Official] Solving storage discrepancies

Unread post by Balthazar2k4 » Thu May 17, 2018 8:03 pm

I am running a DS2415+ with the BTRFS file system. I recently discovered that my NAS has used 8TB of space for something unknown. Storage analyzer is reporting that I have used 58.5TB, but my shared folder is using 50TB. Where did the 8TB of space go? I know BTRFS itself will use around 3TB (4%) for overhead on a 73TB volume, but that still doesn't account for the other 5TB used. I have emptied all recycle bins and I am not using CloudStation. Any ideas on how I can discover where my space went and how I might be able to reclaim it?

Edit: So I ran "btrfs fi df" from the root through SSH and it returned this:

Label: '2017.04.29-14:52:16 v15047' uuid: 88a3e4ba-fb4f-428c-a1f3-cf675609172b
Total devices 1 FS bytes used 55.40TiB
devid 1 size 76.36TiB used 60.63TiB path /dev/mapper/vg1001-lv

I see that the usage is mismatched. So I ran 'btrfs balance start -dusage=72 /volume2 &' to start the re-balance of the file system chunks. I chose a dusage of 72 based on the fact that the system is really 72% full (55.4/76.4). It looks like it is going to take awhile with such a large volume, but DSM is slowly starting to show my available space is growing. A step in the right direction for sure. I'll report back when the balance completes.

I can't take any credit for the above aside from figuring out how to make it work on my system directly. Here is the link I referenced: http://marc.merlins.org/perso/btrfs/pos ... blems.html

Edit: Well, not the magic bullet I had hoped for. Got back about 300GB, but that’s a far cry from the 5TB missing. Guess the mystery continues.
Last edited by Balthazar2k4 on Sat May 19, 2018 5:40 am, edited 2 times in total.

jamie_b
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Re: [Official] Solving storage discrepancies

Unread post by jamie_b » Fri May 18, 2018 6:22 pm

I'm also having this issue!

I have a DS3617xs with with 12 4tb drives in raid 5 one volume (volume1) and can account file wise for around 20tb of my reported 37tb used!!

Majority of my apps are Dockerised
I have removed CloudStation
I have removed Snapshot Replication
I have emptied all recycle bins
I have pulled out some of my hair.

I am currently generating my first even storage analyser report and waiting for the command "du -sk /volume1/* |sort -gr" to finish.

Any help or insight from Synology would be extremely appreciated!

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