zfs discuss - Jan 2010 - Removing large holey file does not free space 6792701 (still)

Hello,

I mentioned this problem a year ago here and filed 6792701 and I know it has
been discussed since. It should have been fixed in snv_118, but I can still
trigger the same problem. This is only triggered if the creation of a large file
is aborted, for example by loss of power,  crash or SIGINT to mkfile(1M). The
bug should probably be reopened but I post it here since some people where
seeing something similar.

Example and attached zdb output:
filer01a:/$ uname -a                                                      
SunOS filer01a 5.11 snv_130 i86pc i386 i86pc Solaris
filer01a:/$ zpool create zpool01 raidz2 c4t0d0 c4t1d0 c4t2d0 c4t4d0 c4t5d0
c4t6d0
filer01a:/$ zpool create zpool01 raidz2 c4t0d0 c4t1d0 c4t2d0 c4t4d0 c4t5d0
c4t6d0
filer01a:/$ zfs list zpool01                                              
NAME      USED  AVAIL  REFER  MOUNTPOINT
zpool01   123K  5.33T  42.0K  /zpool01
filer01a:/$ df -h /zpool01                                                
Filesystem            Size  Used Avail Use% Mounted on
zpool01               5.4T   42K  5.4T   1% /zpool01
filer01a:/$ mkfile 1024G /zpool01/largefile                              
^C                                                                              
filer01a:/$ zfs list zpool01
NAME      USED  AVAIL  REFER  MOUNTPOINT
zpool01   160G  5.17T   160G  /zpool01
filer01a:/$ ls -hl /zpool01/largefile                                     
-rw------- 1 root root 1.0T 2010-01-22 15:02 /zpool01/largefile
filer01a:/$ rm /zpool01/largefile                                         
filer01a:/$ sync                                                          
filer01a:/$ zfs list zpool01                                              
NAME      USED  AVAIL  REFER  MOUNTPOINT
zpool01   160G  5.17T   160G  /zpool01
filer01a:/$ df -h /zpool01                                                
Filesystem            Size  Used Avail Use% Mounted on
zpool01               5.4T  161G  5.2T   3% /zpool01
filer01a:/$ ls -l /zpool01                                                
total 0
filer01a:/$ zfs list -t all zpool01                                       
NAME      USED  AVAIL  REFER  MOUNTPOINT
zpool01   160G  5.17T   160G  /zpool01
filer01a:/$ zpool export zpool01                                          
filer01a:/$ zpool import zpool01                                          
filer01a:/$ zfs list zpool01                                              
NAME      USED  AVAIL  REFER  MOUNTPOINT
zpool01   160G  5.17T   160G  /zpool01
filer01a:/$ zfs -ddd zpool01
<cut>
    Object  lvl   iblk   dblk  dsize  lsize   %full  type
<cut>
         5    5    16K   128K   160G     1T   15.64  ZFS plain file
</cut>


Henrik
http://sparcv9.blogspot.com

-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://mail.opensolaris.org/pipermail/zfs-discuss/attachments/20100122/e5819131/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: zpool01.zdb
Type: application/octet-stream
Size: 26139 bytes
Desc: not available
URL:
<http://mail.opensolaris.org/pipermail/zfs-discuss/attachments/20100122/e5819131/attachment.obj>
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://mail.opensolaris.org/pipermail/zfs-discuss/attachments/20100122/e5819131/attachment-0001.html>