Sparse: Difference between revisions
From DWIKI
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dd seek=10G if=/dev/zero of=sparsetest bs=1 count=1 status=none | dd seek=10G if=/dev/zero of=sparsetest bs=1 count=1 status=none | ||
du --block-size=1 sparsetest | du --block-size=1 sparsetest | ||
8192 sparsetest | |||
du --block-size=1 --apparent sparsetest | du --block-size=1 --apparent sparsetest | ||
10737418241 sparsetest | |||
If these outputs are very different, sparse is supported :) | If these outputs are very different, sparse is supported :) | ||
==Copy sparse file== | ==Copy sparse file== | ||
rsync -S | rsync -S | ||
Revision as of 11:33, 10 July 2023
Links
HOWTO
Check sparse file
Compare:
ls -lh myfile du -sh myfile
Or
dd seek=10G if=/dev/zero of=sparsetest bs=1 count=1 status=none du --block-size=1 sparsetest
8192 sparsetest
du --block-size=1 --apparent sparsetest
10737418241 sparsetest
If these outputs are very different, sparse is supported :)
Copy sparse file
rsync -S
