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Date:      Mon, 18 May 2009 14:12:08 +0200
From:      Christof Schulze <christof.schulze@gmx.net>
To:        freebsd-current@freebsd.org
Subject:   Re: discrepancies in used space after cpio
Message-ID:  <200905181412.11460.christof.schulze@gmx.net>
In-Reply-To: <4A1123C5.3070507@fletchermoorland.co.uk>
References:  <4A1123C5.3070507@fletchermoorland.co.uk>
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Am Montag 18 Mai 2009 11:00:53 schrieb Paul Wootton:
> Hi,
>
> I am currently in the process of moving all my data around, going from a
> single zfs drive (ex-mirror) to a zfs raidz.
> I have used cpio to copy the data to the new pool, but a du shows a big
> difference in the results.
>
> Does anyone have any ideas, or does a "du -h ." not do what I think it
> should?
it is a known bug (at least for the solaris folks) that du does not display=
=20
disk usage correctly on raidz.

But of course different compression algorithms come into play as well.

Regards,

Christof

>
> Cheers
> Paul
>
>
>
> demophon# uname -a
> FreeBSD demophon 8.0-CURRENT FreeBSD 8.0-CURRENT #14: Fri May 15
> 16:48:17 BST 2009     paul@demophon:/usr/obj/usr/src/sys/DEMOPHON  amd64
>
>
>
> demophon# zpool status
>   pool: DemoPool
>  state: ONLINE
>  scrub: none requested
> config:
>
>         NAME        STATE     READ WRITE CKSUM
>         DemoPool    ONLINE       0     0     0
>           raidz1    ONLINE       0     0     0
>             ad20p3  ONLINE       0     0     0
>             ad18p3  ONLINE       0     0     0
>             ad16p4  ONLINE       0     0     0
>
> errors: No known data errors
>
>   pool: zfsroot
>  state: ONLINE
>  scrub: none requested
> config:
>
>         NAME        STATE     READ WRITE CKSUM
>         zfsroot     ONLINE       0     0     0
>           ad16p3    ONLINE       0     0     0
>
> errors: No known data errors
>
>
>
> demophon# mount
> zfsroot/root on / (zfs, local)
> devfs on /dev (devfs, local)
> DemoPool on /DemoPool (zfs, local)
> DemoPool/root on /DemoPool/root (zfs, local)
> DemoPool/tmp on /DemoPool/tmp (zfs, local)
> DemoPool/usr on /DemoPool/usr (zfs, local)
> DemoPool/var on /DemoPool/var (zfs, local)
> zfsroot/tmp on /tmp (zfs, local)
> zfsroot/usr on /usr (zfs, local)
> zfsroot/var on /var (zfs, local)
>
>
>
> demophon# pwd
> /DemoPool/var/tmp/kdecache-paul/kpc
> demophon# ls -lah
> total 1282522
> drwx------   2 paul  paul    25B May 15 19:35 .
> drwx------  11 paul  paul    16B May 15 19:36 ..
> -rw-r--r--   1 paul  paul   5.0M May  6 16:47 kapman_cache.data
> -rw-r--r--   1 paul  paul   1.3M May  6 16:47 kapman_cache.index
> -rw-r--r--   1 paul  paul    15M May 15 17:52 kde-icon-cache.data
> -rw-r--r--   1 paul  paul   4.1M May 15 19:35 kde-icon-cache.index
> -rw-r--r--   1 paul  paul     0B May 15 19:35 kde-icon-cache.updated
> -rw-r--r--   1 paul  paul   5.0M May  6 16:48 kdiamond-cache.data
> -rw-r--r--   1 paul  paul   1.3M May  6 16:48 kdiamond-cache.index
> -rw-r--r--   1 paul  paul   120M Mar 20 08:54 plasma_theme_Atelier.data
> -rw-r--r--   1 paul  paul    32M Mar 20 08:54 plasma_theme_Atelier.index
> -rw-r--r--   1 paul  paul   120M May  4 18:18 plasma_theme_Aya.data
> -rw-r--r--   1 paul  paul    32M May  4 18:18 plasma_theme_Aya.index
> -rw-r--r--   1 paul  paul   120M May 15 18:20 plasma_theme_Elegance.data
> -rw-r--r--   1 paul  paul    32M May 15 19:01
> plasma_theme_Elegance.index -rw-r--r--   1 paul  paul   120M Mar 22
> 19:17 plasma_theme_Glassified.data -rw-r--r--   1 paul  paul    32M Mar
> 22 20:05 plasma_theme_Glassified.index -rw-r--r--   1 paul  paul   120M
> Mar 20 08:53 plasma_theme_Led
> revolution.data
> -rw-r--r--   1 paul  paul    32M Mar 20 08:54 plasma_theme_Led
> revolution.index
> -rw-r--r--   1 paul  paul   120M Mar 20 08:54 plasma_theme_Oxyook.data
> -rw-r--r--   1 paul  paul    32M Mar 20 08:55 plasma_theme_Oxyook.index
> -rw-r--r--   1 paul  paul   120M May  4 18:19 plasma_theme_default.data
> -rw-r--r--   1 paul  paul    32M May  4 18:19 plasma_theme_default.index
> -rw-r--r--   1 paul  paul   120M Mar 20 08:55 plasma_theme_spoons.data
> -rw-r--r--   1 paul  paul    32M Mar 20 08:55 plasma_theme_spoons.index
> demophon# du -h .
> 1.2G    .
> demophon#
>
>
>
> demophon# pwd
> /var/tmp/kdecache-paul/kpc
> demophon# ls -lah
> total 7833
> drwx------   2 paul  paul    25B May 18 09:37 .
> drwx------  11 paul  paul    16B May 18 09:12 ..
> -rw-r--r--   1 paul  paul   5.0M May  6 16:47 kapman_cache.data
> -rw-r--r--   1 paul  paul   1.3M May  6 16:47 kapman_cache.index
> -rw-r--r--   1 paul  paul    15M May 18 09:37 kde-icon-cache.data
> -rw-r--r--   1 paul  paul   4.1M May 18 09:37 kde-icon-cache.index
> -rw-r--r--   1 paul  paul     0B May 18 09:37 kde-icon-cache.updated
> -rw-r--r--   1 paul  paul   5.0M May  6 16:48 kdiamond-cache.data
> -rw-r--r--   1 paul  paul   1.3M May  6 16:48 kdiamond-cache.index
> -rw-r--r--   1 paul  paul   120M Mar 20 08:54 plasma_theme_Atelier.data
> -rw-r--r--   1 paul  paul    32M Mar 20 08:54 plasma_theme_Atelier.index
> -rw-r--r--   1 paul  paul   120M May  4 18:18 plasma_theme_Aya.data
> -rw-r--r--   1 paul  paul    32M May  4 18:18 plasma_theme_Aya.index
> -rw-r--r--   1 paul  paul   120M May 18 09:37 plasma_theme_Elegance.data
> -rw-r--r--   1 paul  paul    32M May 18 09:37
> plasma_theme_Elegance.index -rw-r--r--   1 paul  paul   120M Mar 22
> 19:17 plasma_theme_Glassified.data -rw-r--r--   1 paul  paul    32M Mar
> 22 20:05 plasma_theme_Glassified.index -rw-r--r--   1 paul  paul   120M
> Mar 20 08:53 plasma_theme_Led
> revolution.data
> -rw-r--r--   1 paul  paul    32M Mar 20 08:54 plasma_theme_Led
> revolution.index
> -rw-r--r--   1 paul  paul   120M Mar 20 08:54 plasma_theme_Oxyook.data
> -rw-r--r--   1 paul  paul    32M Mar 20 08:55 plasma_theme_Oxyook.index
> -rw-r--r--   1 paul  paul   120M May  4 18:19 plasma_theme_default.data
> -rw-r--r--   1 paul  paul    32M May  4 18:19 plasma_theme_default.index
> -rw-r--r--   1 paul  paul   120M Mar 20 08:55 plasma_theme_spoons.data
> -rw-r--r--   1 paul  paul    32M Mar 20 08:55 plasma_theme_spoons.index
> demophon# du -h .
> 7.6M    .
> demophon#
>
>
>
> demophon# zfs
> list
> NAME                                USED  AVAIL  REFER
> MOUNTPOINT
> DemoPool                           66.8G   382G  30.6K
> /DemoPool
> DemoPool/root                   1.67G   382G  1.67G  /DemoPool/root
> DemoPool/tmp                   3.03G   382G  3.03G  /DemoPool/tmp
> DemoPool/usr                    59.6G   382G  59.6G  /DemoPool/usr
> DemoPool/var                    2.51G   382G  2.51G  /DemoPool/var
> zfsroot                                79.0G   145G    18K
> none
> zfsroot/root                        1.78G   145G  1.78G
> /
> zfsroot/tmp                        3.67G   145G  3.67G
> /tmp
> zfsroot/usr                         72.1G   145G  59.2G
> /usr
> zfsroot/usr@auto.... (removed huge list for email)
> zfsroot/var                         1.50G   145G  1.18G  /var
> zfsroot/var@auto.... (removed huge list for email)
> demophon#
>
> _______________________________________________
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> http://lists.freebsd.org/mailman/listinfo/freebsd-current
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