Usage bigger after copy?
I know that the speculative prealloc of xfs can make files bigger on a destination, but I thought an "echo 3 >/proc/sys/vm/drop_caches" would help. I even umounted both filesystems, but the destination is bigger:
sys1 Blocks 8378368 Used 2631368 Avail 5747000
sys2 Blocks 8378368 Used 2966566 Avail 5411812
Both are VMs, have a 16G disk, partitioned same size, both on LVM, copied with rsync. xfs_info show the same for both:
meta-data=/dev/mapper/dns1--system-root isize=256 agcount=4,
agsize=524288 blks
= sectsz=512 attr=2
data = bsize=4096 blocks=2097152, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0
log =internal bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0So why is there such a huge diff in size? 300M, 2.6G:2.9G, is a big number. I found these dirs to be very different:
( I rebooted here compared to results before, but same strangeness )
# du -s /1/usr/lib/locale/* /usr/lib/locale/*|sort -n|grep YU 20 /usr/lib/locale/sh_YU.utf8 1760 /1/usr/lib/locale/sh_YU.utf8
But comparing them directly, they are the same:
# du -s /1/usr/lib/locale/sh_YU.utf8 /usr/lib/locale/sh_YU.utf8 1760 /1/usr/lib/locale/sh_YU.utf8 1760 /usr/lib/locale/sh_YU.utf8
So what makes "du" show a huge different when the dir above gets scanned, versus when you compare dirs directly?
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mit freundlichen Grüssen, Michael Monnerie, Ing. BSc it-management Internet Services: Protéger http://proteger.at [gesprochen: Prot-e-schee] Tel: +43 660 / 415 6531
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Michael,
My guess is that you used rsync but did not use H.
retry your rsync with:
rsync -aHx /usr /1/
H will preseve hard links for you and probably make most of your directory size differences go away.
Wayne
Quoted 39 lines · Michael Monnerie
I know that the speculative prealloc of xfs can make files bigger on a destination, but I thought an "echo 3 >/proc/sys/vm/drop_caches" would help. I even umounted both filesystems, but the destination is bigger:
sys1 Blocks 8378368 Used 2631368 Avail 5747000
sys2 Blocks 8378368 Used 2966566 Avail 5411812Both are VMs, have a 16G disk, partitioned same size, both on LVM, copied with rsync.
xfs_infoshow the same for both:meta-data=/dev/mapper/dns1--system-root isize=256 agcount=4,
agsize=524288 blks
= sectsz=512 attr=2
data = bsize=4096 blocks=2097152, imaxpct=25
= sunit=0 swidth=0 blksnaming =version 2 bsize=4096 ascii-ci=0 log =internal bsize=4096 blocks=2560, version=2= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0So why is there such a huge diff in size? 300M, 2.6G:2.9G, is a big number. I found these dirs to be very different:
( I rebooted here compared to results before, but same strangeness )
# du -s /1/usr/lib/locale/* /usr/lib/locale/*|sort -n|grep YU 20 /usr/lib/locale/sh_YU.utf8 1760 /1/usr/lib/locale/sh_YU.utf8But comparing them directly, they are the same:
# du -s /1/usr/lib/locale/sh_YU.utf8 /usr/lib/locale/sh_YU.utf8 1760 /1/usr/lib/locale/sh_YU.utf8 1760 /usr/lib/locale/sh_YU.utf8So what makes "du" show a huge different when the dir above gets scanned, versus when you compare dirs directly?
Quoted 4 lines
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