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RR2304 - System volume root is 91%.
4x2TB NAS with current OS 6.10.2 reports the same warning message on 91% usage as many other users were facing already. According to the info here I have
- turned on SSH Service
- turned off AntiVirus
- logged on with Windows 10 SSH client and changed into directory /var/lib/clamav#
My questions:
1. It shows 267 MB usage and that makes the 91% usage. What files do I have to delete?
2. If I mess up the system I need to restart with factory defaults. Does it mean my setting are gone or do I loose all data on the NAS?
Doing a backup is easy spoken but 4 TB not just into the pocket.
Finally I could free the OS partition, no more warning messages, thanks for all the help.
I add a small summary of my steps for others that may have a similar problem.
1. Preparations in NAS settings
a. Activate SSH Service with password: System > Settings > Services
b. Turn off AntiVirus
2. SSH login (Windows 10)
ssh root@<nas-ip-address>
Password: NAS Admin password
3. File search
a. Search for any large files >200MB: find /var -type f -size +200M
b. Look into Antivitus definition directory for any temp files: cd /var/lib/clamav
ls -lsh
c. Look into media/USB_HDD_1 (that is my 8TB USB connected HD) folders for any files
Result 3a-c: no large files, no temps, nothing peculiar in USB_...
Some threads can be found here where users had to delete the /clamav tmp files, not in this case.
4. Mount the root partition as mnt to eliminate directories from listing that actually point to the data partition
a. mount --bind / /mnt
b. ls -lsh -> found many chunk-0000x files in the root directory (StephenB telling that this is from PLEX transcoding)
c. Delete files: rm /chunk-00*
Another ls -lsh: all chunk deleted and reduced partition usage from 3,5G to 1G
d. cd //
unmount /mnt
e. Turn on AntiVirus in NAS settings
13 Replies
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Retired_Member wrote:You can search large file in root OS partition,the command as below:
find /var -type f -size +500M
Btw. that command doesn't find anything, only below 100M you get results.
ThomasNanninga wrote:
Retired_Member wrote:
You can search large file in root OS partition,the command as below:
find /var -type f -size +500M
Btw. that command doesn't find anything, only below 100M you get results.
Of course it depends on what the underlying problem is. Often it's one or two oversize files - in which case Retired_Member's command is great. In other cases, it's filled with a bunch of smaller files. Did you look in /mnt/media at the USB folders (after using the mount command I posted earlier)?
ThomasNanninga wrote:
1. It shows 267 MB usage and that makes the 91% usage. What files do I have to delete?
FWIW, you've found that your problem isn't caused by the ClamAV antivirus service. It's caused by something else. Retired_Member's command should help you find the file(s) that are causing the problem.
Alternatively you could use paid support at my.netgear.com.
ThomasNanninga wrote:
Doing a backup is easy spoken but 4 TB not just into the pocket.
A 4 TB USB drive costs about $100 in the US. Per-incident support from Netgear is about the same cost. And if you ever need data recovery (and w/o backup you eventually will), you'd be spending $300 or more (recovery software + the drive to put the recovered data on). More importantly, there's a good chance you won't get your data back. I get the need to manage expenses, but IMO not investing in backup is false economy. So maybe think a bit about what data loss would mean, and what your data is worth to you.
ThomasNanninga wrote:
2. If I mess up the system I need to restart with factory defaults. Does it mean my setting are gone or do I loose all data on the NAS?
You'll have to rebuild the NAS from scratch - so all your settings and data will be gone.
stephen, thanks for clarification. Fully agree, 100 bucks is nothing compared to loss of data.
I think I got the directory that sucks. I'm transferring surveillance pics and 100M mpgs via ftp and seems that they remain in /var/ftp that has now 266Giga. I think deleting all subfolders will solve the problem but better wait for the USB disk.:smileyfrustrated:
I haven't seen any setting in FTP protocol regarding directory or file deletion.
ThomasNanninga wrote:
/var/ftp that has now 266Giga. I think deleting all subfolders will solve the problem but better wait for the USB disk.
Be careful here. /var/ftp is actually a linux mount point. The on-disk space you are seeing here is really on the data volume (/var/ftp mounts the shares that have ftp enabled for the FTP server). It's not the cause of your full OS partition (which is only 4 GB in size btw).
Try remounting the OS partition as /mnt - that will take the mount points out of the equation and make the OS partition easier to search.
# mount --bind / /mnt
Sometimes files end up "underneath" mount points - particularly if you use USB backup jobs. So after doing the mount, look in /mnt/media first and make sure all the folders in there (USB_HDD_1, etc) are empty.
When done, you unmount with
# cd //
# umount /mntThe umount won't work if you are in the /mnt folder (what's why the cd // command is there).
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