Hi gurus,
Hopefully a quick question. I'm using a couple of FreeNAS servers to host TimeMachine backups, mostly successfully.
I limit my "vol01/TimeMachine" datasets to 4T, which causes TimeMachine to roll off backups at the rate I want.
To improve the performance, I've
Being curious, I wanted to see what the 4.6T is...
From the command line (df or du), the filesystem looks to be 2.4T used. Looking at the ZFS stats, I see that 2.29T is assigned to the two snapshots that I've held on to as well. So that adds up to 4.6T quite nicely.
What I'm confused about is that the snapshots "only" seem to add up to ~ 1.4G from the last command.
Can anyone tell me how i'm misinterpreting the numbers or what I'm failing to take into account to make the snapshots add up to the 2.31T that is reported in the USEDSNAP attribute from the second last command?
thanks in advance... Brad :)
Hopefully a quick question. I'm using a couple of FreeNAS servers to host TimeMachine backups, mostly successfully.
I limit my "vol01/TimeMachine" datasets to 4T, which causes TimeMachine to roll off backups at the rate I want.
To improve the performance, I've
- paused the TM runs
- removed the 4T dataset size limit so I can perform the next step
- upsized the band files in the .sparsebundle/bands directory from 8 MB to 128 MB (Established practice using OSX hdituil to a temp.sparsebundle directory)
- I've checked the new "big band" sparse bundle and it checks out ok
- moved the old .sparsebundle directory to a different dataset
- renamed temp.sparsebundle to the real name
- recreated the AFP database using the dbd command.
- [next step] Want to reset the dataset size limit to 4T and resume TimeMachine service
Being curious, I wanted to see what the 4.6T is...
From the command line (df or du), the filesystem looks to be 2.4T used. Looking at the ZFS stats, I see that 2.29T is assigned to the two snapshots that I've held on to as well. So that adds up to 4.6T quite nicely.
Code:
freenas01# df -kh /mnt/vol01/TimeMachine/ Filesystem Size Used Avail Capacity Mounted on vol01/TimeMachine 2.4T 2.3T 101G 96% /mnt/vol01/TimeMachine freenas01# du -kshc /mnt/vol01/TimeMachine/* 584G /mnt/vol01/TimeMachine/Brad's MBA 2012.sparsebundle 1.7T /mnt/vol01/TimeMachine/Brad's MBP 2011.sparsebundle 22M /mnt/vol01/TimeMachine/dbd_rebuild_TimeMachine_2016-09-26_01.log 97K /mnt/vol01/TimeMachine/dbd_rebuild_TimeMachine_2016-11-22_01.log 1.1M /mnt/vol01/TimeMachine/dbd_rebuild_TimeMachine_2016-11-22_02.log 2.3T total freenas01# zfs list -r -o space vol01/TimeMachine NAME AVAIL USED USEDSNAP USEDDS USEDREFRESERV USEDCHILD vol01/TimeMachine 101G 4.60T 2.29T 2.31T 0 0 freenas01# zfs list -t snapshot -r -o space vol01/TimeMachine NAME AVAIL USED USEDSNAP USEDDS USEDREFRESERV USEDCHILD vol01/TimeMachine@auto-20161009.1214-1w - 436M - - - - vol01/TimeMachine@auto-20161012.0014-1w - 1.00G - - - -
What I'm confused about is that the snapshots "only" seem to add up to ~ 1.4G from the last command.
Can anyone tell me how i'm misinterpreting the numbers or what I'm failing to take into account to make the snapshots add up to the 2.31T that is reported in the USEDSNAP attribute from the second last command?
thanks in advance... Brad :)