[OmniOS-discuss] "df" reports wrong value

[Ram Chander]

There are no nestes zfs sub volumes. Below are the snapshots used.  Should
i try deleting snaps ?

-bash-4.2#  zfs list  -o
name,used,usedbychildren,usedbysnapshots,available,compressratio,mountpoint
rpool
NAME    USED  USEDCHILD  USEDSNAP  AVAIL  RATIO  MOUNTPOINT
rpool   505G       505G         0  42.5G  1.00x  /rpool

-bash-4.2#  zfs list -r -t snapshot
NAME                                    USED  AVAIL  REFER  MOUNTPOINT
rpool/ROOT/omnios at install               277M      -  1.52G  -
rpool/ROOT/omnios at 2012-11-22-02:03:18   274K      -  35.6G  -
rpool/ROOT/omnios at 2012-11-22-02:04:02   406K      -  35.6G  -
rpool/ROOT/omnios at 2012-12-19-04:54:57   317G      -   318G  -


On Tue, Feb 26, 2013 at 5:35 PM, sergey ivanov <sergey57 at gmail.com> wrote:

> Dear Ram Chandler,
> I guess this space is used by snapshots. Also there is possibility it is
> used by children (nested zfs filesystems) but then they must be unmounted
> so that they are not reported in your du results. Or they are subvolumes?
> If you are using zfs, then I would suggest using zfs tools to monitor it's
> status. Like "zfs list" and "zfs get". You see, zfs is not just a
> filesystem, - it combines in one things like filesytem, volume manager,
> raid and may be others. And to find out what is using the space, I usually
> do something like "zfs get all | grep used" Or, for example, on one of our
> systems:
> ---
> root at megaera:~# df -h /raid/data{,/subversion}
>
> Filesystem            Size  Used Avail Use% Mounted on
> raid/data             5.7T   88K  5.7T   1% /raid/data
> raid/data/subversion  5.8T   39G  5.7T   1% /raid/data/subversion
> root at megaera:~# zfs list  -o name,used,usedbychildren,usedbysnapshots,available,compressratio,mountpoint \
>
>     raid/data{,/subversion}
>
> NAME                   USED  USEDCHILD  USEDSNAP  AVAIL  RATIO  MOUNTPOINT
> raid/data              222G       222G         0  5.70T  1.30x  /raid/data
> raid/data/subversion   151G          0      113G  5.70T  1.09x  /raid/data/subversion
>
> ---
>
> --
>
>   Regards,
>
>   Sergey Ivanov.
>
>
>
> On Tue, Feb 26, 2013 at 6:30 AM, Ram Chander <ramquick at gmail.com> wrote:
>
>> Hi,
>>
>>
>> I have 547G parition and df  shows  only 97G used and 31G  available .
>> When checked with "du" it  also reports only 97G used. Where are the rest
>> of space ? And why is "df" reporting wrong available space.
>> There are no process holding deleted files.
>> *
>> -bash-4.2# df -h*
>> Filesystem             size   used  avail capacity  Mounted on
>> rpool/ROOT/omnios      547G    97G    31G    76%    /
>> /devices                 0K     0K     0K     0%    /devices
>> /dev                     0K     0K     0K     0%    /dev
>> ctfs                     0K     0K     0K     0%    /system/contract
>> proc                     0K     0K     0K     0%    /proc
>> mnttab                   0K     0K     0K     0%    /etc/mnttab
>> swap                  10.0G   300K  10.0G     1%    /etc/svc/volatile
>> objfs                    0K     0K     0K     0%    /system/object
>> sharefs                  0K     0K     0K     0%    /etc/dfs/sharetab
>> /usr/lib/libc/libc_hwcap1.so.1
>>                        128G    97G    31G    76%    /lib/libc.so.1
>> fd                       0K     0K     0K     0%    /dev/fd
>> swap                  10.0G     4K  10.0G     1%    /tmp
>> swap                  10.0G    40K  10.0G     1%    /var/run
>> rpool/export           547G    32K    31G     1%    /export
>> rpool/export/home      547G    31K    31G     1%    /export/home
>> rpool                  547G    36K    31G     1%    /rpool
>>
>> *-bash-4.2# du -sch /**
>> 512     bin
>> 74M     boot
>> 707K    dev
>> 322K    devices
>> 38M     etc
>> 3.0K    export
>> 512     home
>> 112M    kernel
>> 49M     lib
>> 2.0K    media
>> 1.5K    mnt
>> 512     net
>> 439M    opt
>> 341M    platform
>> du: cannot access `proc/23443/fd/3': No such file or directory
>> du: cannot access `proc/23443/path/3': No such file or directory
>> 4.0G    proc
>> 5.7M    root
>> 7.5K    rpool
>> 1.8M    sbin
>> 3.7M    system
>> 1.5K    test
>> 8.0K    tmp
>> 906M    usr
>> 91G     var
>> *97G     total*
>>
>> _______________________________________________
>> OmniOS-discuss mailing list
>> OmniOS-discuss at lists.omniti.com
>> http://lists.omniti.com/mailman/listinfo/omnios-discuss
>>
>>
>
>
> --
> Regards,
> Sergey Ivanov | 443-844-6318 | sergey57 at gmail.com
> http://www.linkedin.com/pub/sergey-ivanov/8/270/a09
>
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>
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