Where did disk space go in zfs?

V

Valery Mukhanov2017-03-14 10:49:27

FreeBSD

Valery Mukhanov, 2017-03-14 10:49:27

The size of the volume is 14.5T and the size of the data set created on this volume is 6.09T.
No quotas have been set.

# zpool get size                                                                                                    
NAME          PROPERTY  VALUE  SOURCE                                                                                               
hdd1          size      14.5T  - 

# zpool get all hdd1                                                                                                
NAME  PROPERTY                       VALUE                          SOURCE                                                          
hdd1  size                           14.5T                          -                                                               
hdd1  capacity                       22%                            -                                                               
hdd1  altroot                        /mnt                           local                                                           
hdd1  health                         ONLINE                         -                                                               
hdd1  guid                           3863011763114068054            default                                                         
hdd1  version                        -                              default                                                         
hdd1  bootfs                         -                              default                                                         
hdd1  delegation                     on                             default                                                         
hdd1  autoreplace                    off                            default                                                         
hdd1  cachefile                      /data/zfs/zpool.cache          local                                                           
hdd1  failmode                       continue                       local                                                           
hdd1  listsnapshots                  off                            default                                                         
hdd1  autoexpand                     on                             local                                                           
hdd1  dedupditto                     0                              default                                                         
hdd1  dedupratio                     1.00x                          -                                                               
hdd1  free                           11.3T                          -                                                               
hdd1  allocated                      3.20T                          -                                                               
hdd1  readonly                       off                            -                                                               
hdd1  comment                        -                              default                                                         
hdd1  expandsize                     -                              -                                                               
hdd1  freeing                        0                              default                                                         
hdd1  fragmentation                  20%                            -                                                               
hdd1  leaked                         0                              default                                                         
hdd1  [email protected]_destroy          enabled                        local                                                           
hdd1  [email protected]_bpobj            active                         local                                                           
hdd1  [email protected]_compress           active                         local                                                           
hdd1  [email protected]_vdev_crash_dump  enabled                        local                                                           
hdd1  [email protected]_histogram     active                         local                                                           
hdd1  [email protected]_txg            active                         local                                                           
hdd1  [email protected]_birth             active                         local                                                           
hdd1  [email protected]_dataset     enabled                        local                                                           
hdd1  [email protected]_data          active                         local                                                           
hdd1  [email protected]              enabled                        local                                                           
hdd1  [email protected]_limits      enabled                        local                                                           
hdd1  [email protected]_blocks           enabled                        local


# zfs get quota hdd1                                                                                                
NAME  PROPERTY  VALUE  SOURCE                                                                                                       
hdd1  quota     none   local 

# zfs  list                                                                                                         
NAME
hdd1                                                   6.09T   728G   140K  /mnt/hdd1                                               
hdd1/.system                                           64.7M   728G   151K  legacy                                                  
hdd1/.system/configs-5ece5c906a8f4df886779fae5cade8a5  44.8M   728G  44.8M  legacy                                                  
hdd1/.system/cores                                     17.8M   728G  17.8M  legacy                                                  
hdd1/.system/rrd-5ece5c906a8f4df886779fae5cade8a5       140K   728G   140K  legacy                                                  
hdd1/.system/samba4                                     523K   728G   523K  legacy                                                  
hdd1/.system/syslog-5ece5c906a8f4df886779fae5cade8a5   1.36M   728G  1.36M  legacy                                                  
hdd1/ESXi                                              4.06T  4.39T   389G  -                                                       
hdd1/ESXi1                                             1.02T  1.57T   158G  -                                                       
hdd1/backup                                            1.01T   728G  1.01T  /mnt/hdd1/backup

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4 answer(s)

A

Artem @Jump, 2017-03-14
Tag

Tried
zfs list -t snapshot ?

S

stoitli, 2017-07-13
@stoitli

copy-on-write filesystems like ZFS don't free up space on deletion,
and even more so if you've used zfs clone or zfs snapshot.

D

Diman89, 2017-03-14
@Diman89

They will prompt here: forum.ixbt.com/topic.cgi?id=109:256

A

athacker, 2017-03-14
@athacker

It's not clear what's bothering you. You have reserved your space for ZVOLs. Now you have 6.09 TB occupied, and 5.96 more are available in total on datasets:
hdd1/ESXi 4.06T 4.39T 389G -
hdd1/ESXi1 1.02T 1.57T 158G -
(second column -- available space). Which in total gives us 12.05 TB. Plus 728 GB available on the core dataset. In total, it turns out ~ 12.8 TB. Plus or minus, taking into account metadata, here it is your volume, no?