zfs_blkstats
Friday Apr 17, 2009
I tripped over this while looking at something else in mdb. My curious mind wondered what it was and might it be useful at some point in the future.
# zpool scrub pool
mdb -k
> ::help zfs_blkstats
NAME
zfs_blkstats - given a spa_t, print block type stats from last scrub
SYNOPSIS
addr ::zfs_blkstats [-v]
ATTRIBUTES
Target: kvm
Module: zfs
Interface Stability: Unstable
> ::walk spa | ::zfs_blkstats -v
Dittoed blocks on same vdev: 2194
Blocks LSIZE PSIZE ASIZE avg comp %Total Type
1 512 512 1.50K 1.50K 1.00 0.00 object directory
2 1K 1K 3.00K 1.50K 1.00 0.00 object array
1 16K 1.50K 4.50K 4.50K 10.66 0.00 packed nvlist
1 16K 1K 3.00K 3.00K 16.00 0.00 bplist
20 128K 42.5K 128K 6.37K 3.01 0.00 SPA space map
16 64K 38.5K 116K 7.21K 1.66 0.00 L0 SPA space map
4 64K 4K 12.0K 3.00K 16.00 0.00 L1 SPA space map
58 928K 60.0K 124K 2.13K 15.46 0.00 DMU dnode
10 160K 12.0K 28.0K 2.79K 13.33 0.00 L0 DMU dnode
8 128K 8K 16K 2K 16.00 0.00 L1 DMU dnode
8 128K 8K 16K 2K 16.00 0.00 L2 DMU dnode
8 128K 8K 16K 2K 16.00 0.00 L3 DMU dnode
8 128K 8K 16K 2K 16.00 0.00 L4 DMU dnode
8 128K 8K 16K 2K 16.00 0.00 L5 DMU dnode
8 128K 8K 16K 2K 16.00 0.00 L6 DMU dnode
9 9.00K 4.50K 9.5K 1.05K 2.00 0.00 DMU objset
4 2K 2K 6.00K 1.50K 1.00 0.00 DSL directory child map
3 1.50K 1.50K 4.50K 1.50K 1.00 0.00 DSL dataset snap map
6 65.0K 8.50K 25.5K 4.25K 7.64 0.00 DSL props
1 512 512 1K 1K 1.00 0.00 ZFS directory
1 512 512 1K 1K 1.00 0.00 ZFS master node
1 512 512 1K 1K 1.00 0.00 ZFS delete queue
258K 2.03G 2.00G 2.00G 7.95K 1.01 99.98 zvol object
256K 1.99G 1.99G 1.99G 8K 1.00 99.72 L0 zvol object
2.00K 32.0M 2.52M 5.05M 2.52K 12.68 0.24 L1 zvol object
22 352K 152K 303K 13.7K 2.32 0.01 L2 zvol object
7 112K 10.5K 21.0K 3.00K 10.66 0.00 L3 zvol object
1 512 512 1K 1K 1.00 0.00 zvol prop
1 128K 6.00K 18.0K 18.0K 21.33 0.00 SPA history
1 512 512 1.50K 1.50K 1.00 0.00 DSL dataset next clones
258K 2.03G 2.00G 2.00G 7.95K 1.01 100.0 Total
256K 2.00G 1.99G 2.00G 7.99K 1.00 99.73 L0 Total
2.01K 32.2M 2.54M 5.08M 2.52K 12.70 0.24 L1 Total
30 480K 160K 319K 10.6K 3.00 0.01 L2 Total
15 240K 18.5K 37.0K 2.46K 12.97 0.00 L3 Total
8 128K 8K 16K 2K 16.00 0.00 L4 Total
8 128K 8K 16K 2K 16.00 0.00 L5 Total
8 128K 8K 16K 2K 16.00 0.00 L6 Total
>
Like this post?
|
|
|
|
|
|
|
|
