On 10/22/2010 03:26 PM, Fennix wrote:
>
>
> On Sat, Oct 23, 2010 at 4:12 AM, alan <[email protected]
> <mailto:[email protected]>> wrote:
>
> On Fri, 22 Oct 2010, Kevin Martin wrote:
>
> >
> >
> > On 10/22/2010 03:10 PM, Terry Polzin wrote:
> >> On Fri, 2010-10-22 at 14:59 -0500, Kevin Martin wrote:
> >>> I've been building out a new laptop and trying to copy over the
> contents of my userspace from my old laptop to my new
> laptop. I
> >>> keep running out of space on my new laptop even though my home
> directory is only 6.6Gb and the userspace (/home) on the
> new laptop
> >>> hase 156Gb of space. So I cleared out everything from my /home
> directory on my new machine and now I see this:
> >>>
> >>> [r...@ktmtoshiba /]# du -sh home
> >>> 24K home
> >>>
> >>> [r...@ktmtoshiba /]# df -h
> >>> Filesystem Size Used Avail Use% Mounted on
> >>> /dev/mapper/vg_ktmtoshiba-lv_root
> >>> 50G 7.2G 40G 16% /
> >>> tmpfs 1.9G 0 1.9G 0% /dev/shm
> >>> /dev/sda5 485M 28M 432M 6% /boot
> >>> /dev/mapper/vg_ktmtoshiba-lv_home
> >>> 164G 188M 155G 1% /home
> >>>
> >>>
> >>> How can du show that home is 24k (which is probably ok since there
> are no files in there, just my home directory and
> lost+found)
> >>> while df shows /home as having 188M used?
> >>>
> >>> Any pertinent thoughts welcome.
> >>>
> >>> Thanks.
> >>>
> >>> Kevin
> >> Block size vs. file size
> >>
> > No matter how you cut it 188Mb doesn't equal 24K. Something seems
> funky here.
>
> How much space is taken up by the filesystem journal?
>
> --
> Truth is stranger than fiction because fiction has to make sense.
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>
>
> How about hidden directories caching temporary data for any (and every)
> application you have installed? Firefox, Opera, Chromium,
> Open Office, Evolution, and any of a myriad applications you might be using?
>
> /fennix
When you say hidden directories I assume you mean . (dot) directories and there
are none. When I cleaned out my new home directory
I made sure to "/bin/rm -rf *" and "/bin/rm -rf .[a-z]*" so it was completely
empty.
And as far as I can tell the size of the journal for the device is 134217728 or
about 128Mb. I get that this way:
[r...@ktmtoshiba /]# mount
/dev/mapper/vg_ktmtoshiba-lv_root on / type ext4 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
tmpfs on /dev/shm type tmpfs (rw,rootcontext="system_u:object_r:tmpfs_t:s0")
/dev/sda5 on /boot type ext4 (rw)
/dev/mapper/vg_ktmtoshiba-lv_home on /home type ext4 (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
capifs on /dev/capi type capifs (rw,mode=0666)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
[r...@ktmtoshiba /]# tune2fs -l /dev/mapper/vg_ktmtoshiba-lv_home | awk
'/Journal.inode/ {print $3}'
8
[r...@ktmtoshiba /]# debugfs -R "stat <8>" /dev/mapper/vg_ktmtoshiba-lv_home
2>&1| awk '/Size: / {print $6}'|head -1
134217728
Then, apparently I divide that number by the size of 1Mb (2^20 or 1048576) and
get 128 (exactly). So I can see where df is
reporting, at least in part, the size of the journal while du is not. Clear as
mud! ;-)
Thanks.
Kevin
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