have create volume of 96gb and inside it created a lun of size 65gb.
rsh filer0011 df -h exch_index_1
Filesystem total used avail capacity Mounted on
/vol/exch_index_1/ 96GB 65GB 30GB 68% /vol/exch_index_1/
/vol/exch_index_1/.snapshot 24GB 0KB 24GB 0% /vol/exch_index_1/.snapshot
I gues the volume got formatted at windows end so that is why it showing me 65gb used. Please correct me if wrong .
I have set volume option Fractional Reserve to 0 and have the snapshot enabled . Also the volume is getting snapmirror to DR filer.
1) When user deletes the few gb's of data and add fresh data the all deleted data goes into snapshot and volume gets full and it takes lun offline.
Wed Apr 24 11:33:03 IST [filer0011: scsitarget.lun.noSpace:error]: LUN '/vol/exch_index_1/exch_index_1' has run out of space.
Wed Apr 24 11:33:03 IST [filer0011: lun.offline:warning]: LUN /vol/exch_index_1/exch_index_1 has been taken offline
2) To avoid this I have disabled the snapshot generation and break the snapmirror relation ship with DR volume . Now again when use starts dumping the fresh data it started eating up the snapshot space (snapmirror snapshot started growing ) and once vailable space in volume is eaten up by snapshot the volume gets full and LUN goes offline again.
Below is volume status when only snapmirror snapshot was there and user was dumping fresh data.
rsh filer0011 df -h exch_index_1
Filesystem total used avail capacity Mounted on
/vol/exch_index_1/ 96GB 65GB 30GB 68% /vol/exch_index_1/
/vol/exch_index_1/.snapshot 24GB 15GB 9133MB 63% /vol/exch_index_1/.snapshot
rsh filer0011 snap list exch_index_1
Volume exch_index_1
working...
%/used %/total date name
---------- ---------- ------------ --------
19% (19%) 13% (13%) Apr 26 10:06 banfpbcpnap0010(0151729288)_exch_index_1R.5 (snapmirror)
To overcome this i have removed snapmirror relationship and delete the snapmirror snapshot as well.
Now its working fine but this is not what i want it.
I want to keep the snapmirror relation on and dont want volume to go offline every now and then when user delete and add more data.
What is causing volume full , why new data is going in snapshot not in actual volume. anything wrong with Fractional Reserve setting ( set to 0 ) . I read full discussion it saying it happens when
Fractional Reserve set to 100%.
Please help.
