Volume and LUN size mismatch

[barry_prince]

HELP!

I have multiple luns presented to a Windows 2008 R2 standard server via iSCSi. Data has been written and deleted successfully to these luns for months and the problem I have is a major differance in the available space between the OS and the lun / volumes within system manager v2.0.

For Example: Drive on server shows 1Tb free space / luns within system manager shows 1Tb free space / volume in system manager shows 200Gb free space. I need to resize this vol by -500Gb and I can't because it thinks there is only 200Gb free plus I'm cautious that the vol will go offline as the OS thinks it has buckets of space free!

2 snap shots created totalling 100Gb and the fractional reserve is set to 0% and no snap reserve (yet)

I have run a space reclaimer using snap manager but this only balances the sizes between OS and sys manager luns. ON TAP version 8.0.1 P4......any ideas or comments appreciated.

Cheers

Baz

[aborzenkov]

If you run space reclamation after creating snapshot, all your freed space is locked in snapshot.

show output of "df -h" and "df -rh" for volume in question as well as "lun show /your/lun/on/this/volume"

[barry_prince]

Thanks for the response. The total size of the snap shots is 100Gb and I have deleted them so free space is now 300Gb on the volume.

DF -H RESULTS

Filesystem               total       used      avail capacity  Mounted on

/vol/vol0/                12GB     2556MB     9731MB      21%  /vol/vol0/

/vol/vol0/.snapshot     3072MB        0TB     3072MB       0%  /vol/vol0/.snapshot

/vol/vol_igsq11uk_sql_sysdb/       15GB    10226MB     5133MB      67%  /vol/vol_igsq11uk_sql_sysdb/

/vol/vol_igsq11uk_sql_sysdb/.snapshot        0TB        0TB        0TB     ---%  /vol/vol_igsq11uk_sql_sysdb/.snapshot

/vol/vol_igsq11uk_sql_userdb/     1536GB     1229GB      306GB      80%  /vol/vol_igsq11uk_sql_userdb/

/vol/vol_igsq11uk_sql_userdb/.snapshot        0TB        0TB        0TB     ---%  /vol/vol_igsq11uk_sql_userdb/.snapshot

/vol/vol_igsq12uk_sql_logs/      209GB      165GB       43GB      79%  /vol/vol_igsq12uk_sql_logs/

/vol/vol_igsq12uk_sql_logs/.snapshot        0GB       34GB        0GB     ---%  /vol/vol_igsq12uk_sql_logs/.snapshot

/vol/vol_igsq11uk_sql_snapinfo/      391GB      250GB      140GB      64%  /vol/vol_igsq11uk_sql_snapinfo/

/vol/vol_igsq11uk_sql_snapinfo/.snapshot        0MB      311MB        0MB     ---%  /vol/vol_igsq11uk_sql_snapinfo/.snapshot

/vol/vol_igdc01uk_vfiler_root/     9420MB       54MB     9366MB       1%  /vol/vol_igdc01uk_vfiler_root/

/vol/vol_igdc01uk_vfiler_root/.snapshot      819MB       52MB      766MB       6%  /vol/vol_igdc01uk_vfiler_root/.snapshot

/vol/vol_igdc01uk_cifs_data/     1288GB     1131GB      157GB      88%  /vol/vol_igdc01uk_cifs_data/

/vol/vol_igdc01uk_cifs_data/.snapshot      175GB      102GB       72GB      59%  /vol/vol_igdc01uk_cifs_data/.snapshot

/vol/vol_igdc01uk_users_data/       70GB       47GB       23GB      67%  /vol/vol_igdc01uk_users_data/

/vol/vol_igdc01uk_users_data/.snapshot     4608MB      316MB     4291MB       7%  /vol/vol_igdc01uk_users_data/.snapshot

/vol/vol_igsq11uk_sql_dba/       57GB       50GB     7749MB      87%  /vol/vol_igsq11uk_sql_dba/

/vol/vol_igsq11uk_sql_dba/.snapshot        0TB        0TB        0TB     ---%  /vol/vol_igsq11uk_sql_dba/.snapshot

/vol/vol_igsq11uk_sql_tempdb/       60GB       51GB     9171MB      85%  /vol/vol_igsq11uk_sql_tempdb/

/vol/vol_igsq11uk_sql_tempdb/.snapshot        0TB        0TB        0TB     ---%  /vol/vol_igsq11uk_sql_tempdb/.snapshot

/vol/sdw_cl_vol_igsq12uk_sql_logs_0/      209GB      131GB       77GB      63%  /vol/sdw_cl_vol_igsq12uk_sql_logs_0/

/vol/sdw_cl_vol_igsq12uk_sql_logs_0/.snapshot        0MB       11MB        0MB     ---%  /vol/sdw_cl_vol_igsq12uk_sql_logs_0/.snapshot

/vol/sdw_cl_vol_igsq12uk_sql_logs_1/      209GB      131GB       77GB      63%  /vol/sdw_cl_vol_igsq12uk_sql_logs_1/

/vol/sdw_cl_vol_igsq12uk_sql_logs_1/.snapshot        0MB       20MB        0MB     ---%  /vol/sdw_cl_vol_igsq12uk_sql_logs_1/.snapshot

DF -RH RESULTS

Filesystem               total       used      avail   reserved  Mounted on

/vol/vol0/                12GB     2547MB     9740MB        0MB  /vol/vol0/

/vol/vol0/.snapshot     3072MB        0TB     3072MB        0MB  /vol/vol0/.snapshot

/vol/vol_igsq11uk_sql_sysdb/       15GB    10226MB     5133MB        0MB  /vol/vol_igsq11uk_sql_sysdb/

/vol/vol_igsq11uk_sql_sysdb/.snapshot        0TB        0TB        0TB        0TB  /vol/vol_igsq11uk_sql_sysdb/.snapshot

/vol/vol_igsq11uk_sql_userdb/     1536GB     1229GB      306GB        0GB  /vol/vol_igsq11uk_sql_userdb/

/vol/vol_igsq11uk_sql_userdb/.snapshot        0TB        0TB        0TB        0TB  /vol/vol_igsq11uk_sql_userdb/.snapshot

/vol/vol_igsq12uk_sql_logs/      209GB      165GB       43GB        0GB  /vol/vol_igsq12uk_sql_logs/

/vol/vol_igsq12uk_sql_logs/.snapshot        0GB       34GB        0GB        0GB  /vol/vol_igsq12uk_sql_logs/.snapshot

/vol/vol_igsq11uk_sql_snapinfo/      391GB      250GB      140GB        0GB  /vol/vol_igsq11uk_sql_snapinfo/

/vol/vol_igsq11uk_sql_snapinfo/.snapshot        0MB      311MB        0MB        0MB  /vol/vol_igsq11uk_sql_snapinfo/.snapshot

/vol/vol_igdc01uk_vfiler_root/     9420MB       54MB     9366MB        0MB  /vol/vol_igdc01uk_vfiler_root/

/vol/vol_igdc01uk_vfiler_root/.snapshot      819MB       52MB      766MB        0MB  /vol/vol_igdc01uk_vfiler_root/.snapshot

/vol/vol_igdc01uk_cifs_data/     1288GB     1131GB      157GB        0GB  /vol/vol_igdc01uk_cifs_data/

/vol/vol_igdc01uk_cifs_data/.snapshot      175GB      102GB       72GB        0GB  /vol/vol_igdc01uk_cifs_data/.snapshot

/vol/vol_igdc01uk_users_data/       70GB       47GB       23GB        0GB  /vol/vol_igdc01uk_users_data/

/vol/vol_igdc01uk_users_data/.snapshot     4608MB      316MB     4291MB        0MB  /vol/vol_igdc01uk_users_data/.snapshot

/vol/vol_igsq11uk_sql_dba/       57GB       50GB     7749MB        0MB  /vol/vol_igsq11uk_sql_dba/

/vol/vol_igsq11uk_sql_dba/.snapshot        0TB        0TB        0TB        0TB  /vol/vol_igsq11uk_sql_dba/.snapshot

/vol/vol_igsq11uk_sql_tempdb/       60GB       51GB     9171MB        0MB  /vol/vol_igsq11uk_sql_tempdb/

/vol/vol_igsq11uk_sql_tempdb/.snapshot        0TB        0TB        0TB        0TB  /vol/vol_igsq11uk_sql_tempdb/.snapshot

/vol/sdw_cl_vol_igsq12uk_sql_logs_0/      209GB      131GB       77GB        0GB  /vol/sdw_cl_vol_igsq12uk_sql_logs_0/

/vol/sdw_cl_vol_igsq12uk_sql_logs_0/.snapshot        0MB       11MB        0MB        0MB  /vol/sdw_cl_vol_igsq12uk_sql_logs_0/.snapshot

/vol/sdw_cl_vol_igsq12uk_sql_logs_1/      209GB      131GB       77GB        0GB  /vol/sdw_cl_vol_igsq12uk_sql_logs_1/

/vol/sdw_cl_vol_igsq12uk_sql_logs_1/.snapshot        0MB       20MB        0MB        0MB  /vol/sdw_cl_vol_igsq12uk_sql_logs_1/.snapshot

lun show /vol/vol_igsq11uk_sql_userdb/igsq11uk_sql_userdb

/vol/vol_igsq11uk_sql_userdb/igsq11uk_sql_userdb    1.2t (1319540544000) (r/w, online, mapped)

Cheers

[jakob_bena]

hi,

here we talk about the same probleme. snapdrive and spacereclaimend...

http://communities.netapp.com/thread/16209

regards

[barry_prince]

Thanks Jakob,

The combination of space reclaim within snap drive and reallocate start -f [vol name] seems to have balanced it all out.

Cheers