ZFS and disk usage

[Mark Schouten]

Hi,

Op Vrijdag, 13-04-2012 om 18:32 schreef Volodymyr Kostyrko:
> After reinventing calculator I'm just puzzled and shamed. This looks 
> strange.
> 
> Indeed not just a single byte from this files should count directly for 
> the main filesystem.
> 
> Just curious, what `ls -la /storage/' and `ls -la /storage/.zfs/s*` show?

[root at storage ~]# zfs list -o name,used,referenced,usedbychildren,usedbydataset,usedbysnapshots,available,mountpoint,quota,reserv,refquota,refreserv "$@" | sed -r "s/none/   -/g"
NAME                                    USED  REFER  USEDCHILD  USEDDS  USEDSNAP  AVAIL  MOUNTPOINT  QUOTA  RESERV  REFQUOTA  REFRESERV
storage                                1.60T   431G      1.18T    431G         0   138G  /storage        -       -         -          -
storage/av.https-ict.nl.OS               20G    16K          0     16K         0   158G  -               -       -         -        20G
storage/bestandonline.https-ict.nl.OS    20G    16K          0     16K         0   158G  -               -       -         -        20G
storage/crm.fastbenelux.DATA            100G    16K          0     16K         0   238G  -               -       -         -       100G
storage/crm.fastbenelux.OS               20G    16K          0     16K         0   158G  -               -       -         -        20G
storage/default.do.not.remove             1G    16K          0     16K         0   139G  -               -       -         -         1G
storage/mail.https-ict.nl.DATA          400G    16K          0     16K         0   538G  -               -       -         -       400G
storage/mail.https-ict.nl.OS             20G    16K          0     16K         0   158G  -               -       -         -        20G
storage/webserver.https-ict.nl.DATA     400G    16K          0     16K         0   538G  -               -       -         -       400G
storage/webserver.https-ict.nl.OS        20G    16K          0     16K         0   158G  -               -       -         -        20G
storage/webserver2.https-ict.nl.DATA     20G    16K          0     16K         0   158G  -               -       -         -        20G
storage/webserver2.https-ict.nl.OS       20G    16K          0     16K         0   158G  -               -       -         -        20G
storage/xlmail.xladsl.nl.DATA           150G    16K          0     16K         0   288G  -               -       -         -       150G
storage/xlmail.xladsl.nl.os              20G    16K          0     16K         0   158G  -               -       -         -        20G

[root at storage /storage]# ls -al 
total 452101743
drwxr-xr-x   2 root  wheel            18 Mar 24 17:42 .
drwxr-xr-x  20 root  wheel           512 May 10  2011 ..
-rw-r--r--   1 root  wheel   21474836480 Apr 16 12:40 av.https-ict.nl.OS
-rw-r--r--   1 root  wheel  155692564480 Mar 24 17:42 bestandonline.https-ict.nl.DATA
-rw-r--r--   1 root  wheel   21474836480 Apr  5 12:19 bestandonline.https-ict.nl.OS
-rw-r--r--   1 root  wheel  107374182400 Apr 16 12:40 crm.fastbenelux.DATA
-rw-r--r--   1 root  wheel   21474836480 Apr 16 12:39 crm.fastbenelux.OS
-rw-r--r--   1 root  wheel    1073741824 Apr  5 12:19 default.do.not.remove
-rw-r--r--   1 root  wheel   10737418240 May 12  2011 documentatievm.https-ict.nl
-rw-r--r--   1 root  wheel  429496729600 Apr 15 02:07 mail.https-ict.nl.DATA
-rw-r--r--   1 root  wheel   21474836480 Apr 16 12:40 mail.https-ict.nl.OS
-rw-r--r--   1 root  wheel   16106127360 May 16  2011 testvm1.https-ict.nl
-rw-r--r--   1 root  wheel  429496729600 Apr 16 12:40 webserver.https-ict.nl.DATA
-rw-r--r--   1 root  wheel   21474836480 Apr 16 12:40 webserver.https-ict.nl.OS
-rw-r--r--   1 root  wheel   21474836480 Apr  5 12:19 webserver2.https-ict.nl.DATA
-rw-r--r--   1 root  wheel   21474836480 Apr 16 12:40 webserver2.https-ict.nl.OS
-rw-r--r--   1 root  wheel  161061273600 Apr 16 12:40 xlmail.xladsl.nl.DATA
-rw-r--r--   1 root  wheel   21474836480 Apr 16 12:40 xlmail.xladsl.nl.os

[root at storage /storage]# ls -la /storage/.zfs/s* 
/storage/.zfs/shares:
total 2
dr-xr-xr-x  2 root  wheel  2 May 10  2011 .
dr-xr-xr-x  4 root  wheel  4 May 10  2011 ..

/storage/.zfs/snapshot:
total 0
dr-xr-xr-x  2 root  wheel  2 May 10  2011 .
dr-xr-xr-x  4 root  wheel  4 May 10  2011 ..


It definitly looks like the reserved space for the zvols is counted in /storage, but the written data is counted for /storage as well, instead of the zvols..

Will an upgrade fix this?

-- 
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Mark Schouten  | Tuxis Internet Engineering
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