Sparse: Difference between revisions
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*[https://en.wikipedia.org/wiki/Sparse_file Sparse File] | *[https://en.wikipedia.org/wiki/Sparse_file Sparse File] | ||
[[Storage_full]] | [[Storage_full]] | ||
=File systems/storages supporting sparse= | |||
Pretty much all filesystems: BTRFS, NILFS, ZFS, NTFS, ext2, ext3, ext4, XFS, JFS, ReiserFS, Reiser4, UFS, Rock Ridge, UDF, ReFS, APFS, F2FS | |||
NFS: since 4.2, make sure to mount as '''vers=4.2''' | |||
qcow2 | |||
=HOWTO= | =HOWTO= | ||
Revision as of 10:48, 6 October 2023
Links
File systems/storages supporting sparse
Pretty much all filesystems: BTRFS, NILFS, ZFS, NTFS, ext2, ext3, ext4, XFS, JFS, ReiserFS, Reiser4, UFS, Rock Ridge, UDF, ReFS, APFS, F2FS
NFS: since 4.2, make sure to mount as vers=4.2
qcow2
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
