I have a 500T ZFS server with 8 zpools. The usage overall is pretty moderate. However, I noticed that on one of the zpools the usedbydataset value is as large as 24.2T. The actual user data on this zpool is just about 4T. The other zpools have pretty moderate values. See below:
$ zfs list|egrep '(^jbodp4 |^NAME)'
NAME USED AVAIL REFER MOUNTPOINT
jbodp4 28.0T 20.0T 24.2T /zfs/4
$ zfs list|egrep '^jbodp4\/'
jbodp4/user1 219K 5.00T 219K /zfs/4/user1
jbodp4/user2 144G 4.86T 144G /zfs/4/user2
jbodp4/user3 4.87G 5.00T 4.87G /zfs/4/user3
jbodp4/user4 3.69T 1.31T 3.69T /zfs/4/user4
$ zfs get all|egrep '(^jbodp[0-9] |^intp[0-9] )' | grep 'usedbydataset'
intp1 usedbydataset 219K -
intp2 usedbydataset 252G -
intp3 usedbydataset 219K -
jbodp4 usedbydataset 24.2T -
jbodp5 usedbydataset 16.1G -
jbodp6 usedbydataset 1.42T -
jbodp7 usedbydataset 901G -
jbodp8 usedbydataset 329K -
Could someone help me identify why this particular jbod has such a high usage for usedbydataset and how could I find more about this dataset.
0 Answers