I have done some more tests, it seems that if I create a large file
with mkfile and interrupt the creation, the space that was allocated
is still occupied after I remove the file.
I'm gonna file this as a bug if no one has anything to add to this.
First I create a new pool, on that pool I create a file and interrupt
the creation, after removing that file the space is free again:
# uname -a
SunOS tank 5.11 snv_101 i86pc i386 i86pc
# zpool create tank raidz c1t1d0 c1t2d0 c1t4d0
# zfs list tank
NAME USED AVAIL REFER MOUNTPOINT
tank 85.9K 2.66T 24.0K /tank
# mkfile 10G /tank/testfile01
^C# zfs list tank
NAME USED AVAIL REFER MOUNTPOINT
tank 4.73G 2.66T 4.73G /tank
# rm /tank/testfile01 && sync
# zfs list tank
NAME USED AVAIL REFER MOUNTPOINT
tank 85.9K 2.66T 24.0K /tank
Now, if I do the same again, but with a very large file:
# mkfile 750G /tank/testfile02
^C# zfs list tank
NAME USED AVAIL REFER MOUNTPOINT
tank 11.3G 2.65T 11.3G /tank
# rm /tank/testfile02 && sync
zfs list tank# zfs list tank
NAME USED AVAIL REFER MOUNTPOINT
tank 12.2G 2.65T 12.2G /tank
# zpool export tank
# zpool import tank
# zfs list tank
NAME USED AVAIL REFER MOUNTPOINT
tank 12.2G 2.65T 12.2G /tank
# zpool scrub tank
# zpool status tank
pool: tank
state: ONLINE
scrub: scrub completed after 0h1m with 0 errors on Sun Nov 16 01:17:54
2008
config:
NAME STATE READ WRITE CKSUM
tank ONLINE 0 0 0
raidz1 ONLINE 0 0 0
c1t1d0 ONLINE 0 0 0
c1t2d0 ONLINE 0 0 0
c1t4d0 ONLINE 0 0 0
errors: No known data errors
Some zdb output:
# zdb -dddd tank |more
Dataset mos [META], ID 0, cr_txg 4, 89.9K, 30 objects, rootbp [L0 DMU
objset] 40
0L/200P DVA[0]=<0:c800026800:400> DVA[1]=<0:19000026800:400>
DVA[2]=<0:26800:400
> fletcher4 lzjb LE contiguous birth=43 fill=30 cksum=af477f73c:
4926037df90:f80a
fd99a65f:2399d9c07818be
Object lvl iblk dblk lsize asize type
0 1 16K 16K 16K 8K DMU dnode
Object lvl iblk dblk lsize asize type
1 1 16K 16K 32K 12.0K object directory
Fat ZAP stats:
Pointer table:
1024 elements
zt_blk: 0
zt_numblks: 0
zt_shift: 10
zt_blks_copied: 0
zt_nextblk: 0
ZAP entries: 7
Leaf blocks: 1
Total blocks: 2
zap_block_type: 0x8000000000000001
zap_magic: 0x2f52ab2ab
zap_salt: 0x1d479cab3
Leafs with 2^n pointers:
9: 1 *
Blocks with n*5 entries:
1: 1 *
Blocks n/10 full:
1: 1 *
Entries with n chunks:
3: 7 *******
Buckets with n entries:
0: 505
****************************************
1: 7 *
sync_bplist = 21
history = 22
root_dataset = 2
errlog_scrub = 0
errlog_last = 0
deflate = 1
config = 20
Object lvl iblk dblk lsize asize type
2 1 16K 512 512 0 DSL directory
256 bonus DSL directory
creation_time = Sun Nov 16 01:11:53 2008
head_dataset_obj = 16
parent_dir_obj = 0
origin_obj = 14
child_dir_zapobj = 4
used_bytes = 12.2G
compressed_bytes = 12.2G
uncompressed_bytes = 12.2G
quota = 0
reserved = 0
props_zapobj = 3
deleg_zapobj = 0
flags = 1
used_breakdown[HEAD] = 12.2G
used_breakdown[SNAP] = 0
used_breakdown[CHILD] = 89.9K
used_breakdown[CHILD_RSRV] = 0
used_breakdown[REFRSRV] = 0
Object lvl iblk dblk lsize asize type
3 1 16K 512 512 2K DSL props
microzap: 512 bytes, 0 entries
Object lvl iblk dblk lsize asize type
4 1 16K 512 512 2K DSL directory child map
microzap: 512 bytes, 2 entries
$MOS = 5
$ORIGIN = 8
Object lvl iblk dblk lsize asize type
5 1 16K 512 512 0 DSL directory
256 bonus DSL directory
creation_time = Sun Nov 16 01:11:53 2008
head_dataset_obj = 0
parent_dir_obj = 2
origin_obj = 0
child_dir_zapobj = 7
used_bytes = 89.9K
compressed_bytes = 25.5K
uncompressed_bytes = 25.5K
quota = 0
reserved = 0
props_zapobj = 6
deleg_zapobj = 0
flags = 1
used_breakdown[HEAD] = 89.9K
used_breakdown[SNAP] = 0
used_breakdown[CHILD] = 0
used_breakdown[CHILD_RSRV] = 0
used_breakdown[REFRSRV] = 0
Object lvl iblk dblk lsize asize type
6 1 16K 512 512 2K DSL props
microzap: 512 bytes, 0 entries
Object lvl iblk dblk lsize asize type
7 1 16K 512 512 2K DSL directory child map
microzap: 512 bytes, 0 entries
Object lvl iblk dblk lsize asize type
8 1 16K 512 512 0 DSL directory
256 bonus DSL directory
creation_time = Sun Nov 16 01:11:53 2008
head_dataset_obj = 11
parent_dir_obj = 2
origin_obj = 0
child_dir_zapobj = 10
used_bytes = 0
compressed_bytes = 0
uncompressed_bytes = 0
quota = 0
reserved = 0
props_zapobj = 9
deleg_zapobj = 0
flags = 1
used_breakdown[HEAD] = 0
used_breakdown[SNAP] = 0
used_breakdown[CHILD] = 0
used_breakdown[CHILD_RSRV] = 0
used_breakdown[REFRSRV] = 0
Object lvl iblk dblk lsize asize type
9 1 16K 512 512 2K DSL props
microzap: 512 bytes, 0 entries
Object lvl iblk dblk lsize asize type
10 1 16K 512 512 2K DSL directory child map
microzap: 512 bytes, 0 entries
Object lvl iblk dblk lsize asize type
11 1 16K 512 512 0 DSL dataset
320 bonus DSL dataset
dir_obj = 8
prev_snap_obj = 14
prev_snap_txg = 1
next_snap_obj = 0
snapnames_zapobj = 12
num_children = 0
creation_time = Sun Nov 16 01:11:53 2008
creation_txg = 1
deadlist_obj = 15
used_bytes = 0
compressed_bytes = 0
uncompressed_bytes = 0
unique = 0
fsid_guid = 9675748958236906
guid = 12025087531231622166
flags = 4
next_clones_obj = 0
props_obj = 0
bp = <hole>
Object lvl iblk dblk lsize asize type
12 1 16K 512 512 2K DSL dataset snap map
microzap: 512 bytes, 1 entries
$ORIGIN = 14
Object lvl iblk dblk lsize asize type
13 1 16K 128K 128K 0 bplist
32 bonus bplist header
Object lvl iblk dblk lsize asize type
14 1 16K 512 512 0 DSL dataset
320 bonus DSL dataset
dir_obj = 8
prev_snap_obj = 0
prev_snap_txg = 0
next_snap_obj = 11
snapnames_zapobj = 0
num_children = 2
creation_time = Sun Nov 16 01:11:53 2008
creation_txg = 1
deadlist_obj = 13
used_bytes = 0
compressed_bytes = 0
uncompressed_bytes = 0
unique = 0
fsid_guid = 48874463137685700
guid = 16799716212201729014
flags = 4
next_clones_obj = 19
props_obj = 0
bp = <hole>
Object lvl iblk dblk lsize asize type
15 1 16K 128K 128K 0 bplist
32 bonus bplist header
Object lvl iblk dblk lsize asize type
16 1 16K 512 512 0 DSL dataset
320 bonus DSL dataset
dir_obj = 2
prev_snap_obj = 14
prev_snap_txg = 1
next_snap_obj = 0
snapnames_zapobj = 17
num_children = 0
creation_time = Sun Nov 16 01:11:53 2008
creation_txg = 1
deadlist_obj = 18
used_bytes = 12.2G
compressed_bytes = 12.2G
uncompressed_bytes = 12.2G
unique = 12.2G
fsid_guid = 69508264734546309
guid = 9993987807350083321
flags = 4
next_clones_obj = 0
props_obj = 0
bp = [L0 DMU objset] 400L/200P
DVA[0]=<0:64652d400:400> DVA[1]=<
0:c80032dc00:400> fletcher4 lzjb LE contiguous birth=28 fill=5
cksum=ae2a07052:4
91babbaac1:f96aca21cd61:2405acfae00513
Object lvl iblk dblk lsize asize type
17 1 16K 512 512 2K DSL dataset snap map
microzap: 512 bytes, 0 entries
Object lvl iblk dblk lsize asize type
18 1 16K 128K 128K 0 bplist
32 bonus bplist header
Object lvl iblk dblk lsize asize type
19 1 16K 512 512 2K DSL dataset next clones
microzap: 512 bytes, 1 entries
10 = 16
Object lvl iblk dblk lsize asize type
20 1 16K 16K 16K 6.00K packed nvlist
8 bonus packed nvlist size
version=13
name='tank'
state=0
txg=43
pool_guid=15209315969328691824
hostid=13281026
hostname='tank'
vdev_tree
type='root'
id=0
guid=15209315969328691824
children[0]
type='raidz'
id=0
guid=12939139411228926927
nparity=1
metaslab_array=23
metaslab_shift=35
ashift=9
asize=4500865941504
is_log=0
children[0]
type='disk'
id=0
guid=4433333881730944857
path='/dev/dsk/c1t1d0s0'
devid='id1,[EMAIL PROTECTED]/a'
phys_path='/[EMAIL PROTECTED],0/pci1043,[EMAIL
PROTECTED]/
[EMAIL PROTECTED],0:a'
whole_disk=1
DTL=30
children[1]
type='disk'
id=1
guid=8145955088711690996
path='/dev/dsk/c1t2d0s0'
devid='id1,[EMAIL PROTECTED]/a'
phys_path='/[EMAIL PROTECTED],0/pci1043,[EMAIL
PROTECTED]/
[EMAIL PROTECTED],0:a'
whole_disk=1
DTL=29
children[2]
type='disk'
id=2
guid=7829790635521907151
path='/dev/dsk/c1t4d0s0'
devid='id1,[EMAIL PROTECTED]/a'
phys_path='/[EMAIL PROTECTED],0/pci1043,[EMAIL
PROTECTED]/
[EMAIL PROTECTED],0:a'
whole_disk=1
DTL=28
Object lvl iblk dblk lsize asize type
21 1 16K 16K 16K 4K bplist (Z=uncompressed)
32 bonus bplist header
Object lvl iblk dblk lsize asize type
22 1 16K 128K 128K 16K SPA history
40 bonus SPA history offsets
Object lvl iblk dblk lsize asize type
23 1 16K 512 512 2K object array
Object lvl iblk dblk lsize asize type
24 1 16K 4K 4K 2K SPA space map
24 bonus SPA space map header
Object lvl iblk dblk lsize asize type
25 1 16K 4K 4K 4K SPA space map
24 bonus SPA space map header
Object lvl iblk dblk lsize asize type
26 1 16K 4K 12.0K 16K SPA space map
24 bonus SPA space map header
Object lvl iblk dblk lsize asize type
28 1 16K 4K 4K 0 SPA space map
24 bonus SPA space map header
Object lvl iblk dblk lsize asize type
29 1 16K 4K 4K 0 SPA space map
24 bonus SPA space map header
Object lvl iblk dblk lsize asize type
30 1 16K 4K 4K 0 SPA space map
24 bonus SPA space map header
Deferred frees: 21 entries, 95.9K
Dirty time logs:
tank
raidz
/dev/dsk/c1t1d0s0
/dev/dsk/c1t2d0s0
/dev/dsk/c1t4d0s0
Metaslabs:
vdev 0
offset spacemap free
------ -------- ----
0 26 13.6G
800000000 0 32G
1000000000 0 32G
1800000000 0 32G
2000000000 0 32G
2800000000 0 32G
3000000000 0 32G
3800000000 0 32G
4000000000 0 32G
4800000000 0 32G
5000000000 0 32G
5800000000 0 32G
6000000000 0 32G
6800000000 0 32G
7000000000 0 32G
7800000000 0 32G
8000000000 0 32G
8800000000 0 32G
9000000000 0 32G
9800000000 0 32G
a000000000 0 32G
a800000000 0 32G
b000000000 0 32G
b800000000 0 32G
c000000000 0 32G
c800000000 25 32.0G
d000000000 0 32G
d800000000 0 32G
e000000000 0 32G
e800000000 0 32G
f000000000 0 32G
f800000000 0 32G
10000000000 0 32G
10800000000 0 32G
11000000000 0 32G
11800000000 0 32G
12000000000 0 32G
12800000000 0 32G
13000000000 0 32G
13800000000 0 32G
14000000000 0 32G
14800000000 0 32G
15000000000 0 32G
15800000000 0 32G
16000000000 0 32G
16800000000 0 32G
17000000000 0 32G
17800000000 0 32G
18000000000 0 32G
18800000000 0 32G
19000000000 24 32.0G
19800000000 0 32G
1a000000000 0 32G
1a800000000 0 32G
1b000000000 0 32G
1b800000000 0 32G
1c000000000 0 32G
1c800000000 0 32G
1d000000000 0 32G
1d800000000 0 32G
1e000000000 0 32G
1e800000000 0 32G
1f000000000 0 32G
1f800000000 0 32G
20000000000 0 32G
20800000000 0 32G
21000000000 0 32G
21800000000 0 32G
22000000000 0 32G
22800000000 0 32G
23000000000 0 32G
23800000000 0 32G
24000000000 0 32G
24800000000 0 32G
25000000000 0 32G
25800000000 0 32G
26000000000 0 32G
26800000000 0 32G
27000000000 0 32G
27800000000 0 32G
28000000000 0 32G
28800000000 0 32G
29000000000 0 32G
29800000000 0 32G
2a000000000 0 32G
2a800000000 0 32G
2b000000000 0 32G
2b800000000 0 32G
2c000000000 0 32G
2c800000000 0 32G
2d000000000 0 32G
2d800000000 0 32G
2e000000000 0 32G
2e800000000 0 32G
2f000000000 0 32G
2f800000000 0 32G
30000000000 0 32G
30800000000 0 32G
31000000000 0 32G
31800000000 0 32G
32000000000 0 32G
32800000000 0 32G
33000000000 0 32G
33800000000 0 32G
34000000000 0 32G
34800000000 0 32G
35000000000 0 32G
35800000000 0 32G
36000000000 0 32G
36800000000 0 32G
37000000000 0 32G
37800000000 0 32G
38000000000 0 32G
38800000000 0 32G
39000000000 0 32G
39800000000 0 32G
3a000000000 0 32G
3a800000000 0 32G
3b000000000 0 32G
3b800000000 0 32G
3c000000000 0 32G
3c800000000 0 32G
3d000000000 0 32G
3d800000000 0 32G
3e000000000 0 32G
3e800000000 0 32G
3f000000000 0 32G
3f800000000 0 32G
40000000000 0 32G
40800000000 0 32G
Dataset tank [ZPL], ID 16, cr_txg 1, 12.2G, 5 objects, rootbp [L0 DMU
objset] 40
0L/200P DVA[0]=<0:64652d400:400> DVA[1]=<0:c80032dc00:400> fletcher4
lzjb LE con
tiguous birth=28 fill=5
cksum=ae2a07052:491babbaac1:f96aca21cd61:2405acfae00513
Object lvl iblk dblk lsize asize type
0 7 16K 16K 16K 20.0K DMU dnode
Object lvl iblk dblk lsize asize type
1 1 16K 512 512 1.50K ZFS master node
microzap: 512 bytes, 3 entries
ROOT = 3
DELETE_QUEUE = 2
VERSION = 3
Object lvl iblk dblk lsize asize type
2 1 16K 512 512 1.50K ZFS delete queue
microzap: 512 bytes, 1 entries
5 = 5
Object lvl iblk dblk lsize asize type
3 1 16K 512 512 1.50K ZFS directory
264 bonus ZFS znode
path /
uid 0
gid 0
atime Sun Nov 16 01:11:53 2008
mtime Sun Nov 16 01:14:18 2008
ctime Sun Nov 16 01:14:18 2008
crtime Sun Nov 16 01:11:53 2008
gen 4
mode 40755
size 2
parent 3
links 2
xattr 0
rdev 0x0000000000000000
microzap: 512 bytes, 0 entries
Object lvl iblk dblk lsize asize type
5 5 16K 128K 750G 12.2G ZFS plain file
264 bonus ZFS znode
path ???<object#5>
uid 0
gid 0
atime Sun Nov 16 01:13:12 2008
mtime Sun Nov 16 01:14:07 2008
ctime Sun Nov 16 01:14:07 2008
crtime Sun Nov 16 01:13:12 2008
gen 16
mode 100600
size 805306368000
parent 3
links 0
xattr 0
rdev 0x0000000000000000
Henrik Johansson
http://sparcv9.blogspot.com
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