Pool / Drive storage capacity not reporting properly

[Milhouse]

I'm not sure you can "trust" the output of dh when looking at ZFS filesystems - the ZFS datasets are all layered on the same storage pool, and dh may give misleading results.

The output from your "zfs list" seems OK - your used space amounts to ~1.55TB (the sum of used space for each dataset), and you have a total of 1.15TB remaining to all of these datasets (except where a quota has been applied). This would mean you started out with about ~2.7TB of usable storage, which would be about right for 3x1.5TB/Z1.

 

[rabiat]

I'm not sure I can trust freenas/zfs with my data. If close to 2TB of usable disk space can magically disappear, what keeps another 2TB from disappearing all of a sudden?

I really like the concept of freenas but I didn't expect these weird problems to happen.

 

[originalprime]

Created a trouble ticket

@rabiat,

I guess the good news is that the disk space did not actually disappear, it simply isn't being reported properly by the web GUI. I have just submitted a trouble ticket which will hopefully shed some light on whatever is happening here.

Like you, I too and treading into FreeNAS and ZFS cautiously. I am a lifelong Microsoft guy and do not know the first thing about Unix or Linux. I do however have a growing need for better storage management and I want FreeNAS to be my replacement for Windows Home Server v1.

Hopefully this works out and I can set my data loose on my FreeNAS box. Until then I have to keep two servers running.

 

[rabiat]

Thanks for the information originalprime!

Just let me know if you need any command outputs from my side that would help in the trouble ticket.

 

[joeschmuck]

@rabiat,
You should add your two cents. It can only help the developers.

 

[rabiat]

Just an update:

Yesterday my Freenas server reported 4.4TiB instead of 4.1TiB of total space on volume1. Today it's back as it was from the beginning:

Code:

zfs list
NAME      USED  AVAIL  REFER  MOUNTPOINT
volume1  2.09T  3.10T  2.04T  /mnt/volume1

Code:

zpool list
NAME      SIZE   USED  AVAIL    CAP  HEALTH  ALTROOT
volume1  7.25T  2.88T  4.37T    39%  ONLINE  /mnt

Code:

df -h
Filesystem             Size    Used   Avail Capacity  Mounted on
/dev/ufs/FreeNASs1a    927M    429M    424M    50%    /
devfs                  1.0K    1.0K      0B   100%    /dev
/dev/md0               4.3M    3.6M    392K    90%    /etc
/dev/md1               732K     16K    660K     2%    /mnt
/dev/md2                75M     18M     51M    26%    /var
/dev/ufs/FreeNASs4      20M    907K     17M     5%    /data
volume1                5.1T    2.0T    3.1T    40%    /mnt/volume1

 

[AndyVas]

The same problem...

Hi All! I have some problem too. I install FreeNAS version 8.0.2 stable on computer with 4x3Tb HDD as RAIDZ and have one volume named "FreeNAS" 7.8Tb after fresh install. Then I create 4 datasets (Music Public Video and Support), create shares and copy some data from my old Windows server to NAS. Now NAS working fine without errors but I have incorrect sizes of my datasets and incorrect shares info when I see free space on my Windows computers.

GUI capture:
GUI capture

Some SSH output:

Code:

/root$ zpool status -v
  pool: FreeNAS
 state: ONLINE
 scrub: none requested
config:

	NAME                                            STATE     READ WRITE CKSUM
	FreeNAS                                         ONLINE       0     0     0
	  raidz1                                        ONLINE       0     0     0
	    gptid/79432f5b-fbd5-11e0-a8fe-1c6f65cfd826  ONLINE       0     0     0
	    gptid/79c35ce0-fbd5-11e0-a8fe-1c6f65cfd826  ONLINE       0     0     0
	    gptid/7a493dd0-fbd5-11e0-a8fe-1c6f65cfd826  ONLINE       0     0     0
	    gptid/7acb1554-fbd5-11e0-a8fe-1c6f65cfd826  ONLINE       0     0     0

errors: No known data errors

/root$ zpool list
NAME      SIZE   USED  AVAIL    CAP  HEALTH  ALTROOT
FreeNAS  10.9T  5.24T  5.64T    48%  ONLINE  /mnt

/root$ df -k
Filesystem          1024-blocks       Used      Avail Capacity  Mounted on
/dev/ufs/FreeNASs1a      948903     439106     433884    50%    /
devfs                         1          1          0   100%    /dev
/dev/md0                   4380       3640        392    90%    /etc
/dev/md1                    732         16        660     2%    /mnt
/dev/md2                  76316      19936      50276    28%    /var
/dev/ufs/FreeNASs4        20263        798      17844     4%    /data
FreeNAS              4267415931        209 4267415722     0%    /mnt/FreeNAS
FreeNAS/Music        4319315197   51899475 4267415722     1%    /mnt/FreeNAS/Music
FreeNAS/Public       4388761343  121345621 4267415722     3%    /mnt/FreeNAS/Public
FreeNAS/Support      4267523404     107682 4267415722     0%    /mnt/FreeNAS/Support
FreeNAS/Video        8178103015 3910687293 4267415722    48%    /mnt/FreeNAS/Video

/root$ df -h
Filesystem             Size    Used   Avail Capacity  Mounted on
/dev/ufs/FreeNASs1a    927M    429M    424M    50%    /
devfs                  1.0K    1.0K      0B   100%    /dev
/dev/md0               4.3M    3.6M    392K    90%    /etc
/dev/md1               732K     16K    660K     2%    /mnt
/dev/md2                75M     19M     49M    28%    /var
/dev/ufs/FreeNASs4      20M    787K     17M     4%    /data
FreeNAS                3.9T    209K    3.9T     0%    /mnt/FreeNAS
FreeNAS/Music          4.0T     49G    3.9T     1%    /mnt/FreeNAS/Music
FreeNAS/Public         4.1T    147G    3.9T     4%    /mnt/FreeNAS/Public
FreeNAS/Support        3.9T    105M    3.9T     0%    /mnt/FreeNAS/Support
FreeNAS/Video          7.6T    3.6T    3.9T    48%    /mnt/FreeNAS/Video

/root$ zfs list
NAME              USED  AVAIL  REFER  MOUNTPOINT
FreeNAS          3.81T  3.97T   209K  /mnt/FreeNAS
FreeNAS/Music    49.5G  3.97T  49.5G  /mnt/FreeNAS/Music
FreeNAS/Public    124G  3.97T   124G  /mnt/FreeNAS/Public
FreeNAS/Support   105M  3.97T   105M  /mnt/FreeNAS/Support
FreeNAS/Video    3.64T  3.97T  3.64T  /mnt/FreeNAS/Video

What is it? Thanks in advance for any replies.

 

[Milhouse]

zfs list? Probably the only source of accurate information.

 

[AndyVas]

Why base FreeNAS volume reported only 3.9T full size while FeeNAS/Video dataset report correct 7.6T with df -h output? After fresh install all datasets and FreeNAS volume report full size 7.8T but now only FeeNAS/Video report 7T. I am not understand "Size" column in df -h output, "Used" and "Avail" have true information. And zfs list output is correct I think. The same sizes in GUI interface and share info on Windows computer connected to this shares. I see full size 7.6T only on FeeNAS/Video dataset but not on others datasets and primary volume FreeNAS. Are this correct?