Identifying sparse files using getattrlist()
Identifying sparse files using getattrlist()
- Subject: Identifying sparse files using getattrlist()
- From: rohan a <email@hidden>
- Date: Mon, 2 Nov 2009 19:07:56 +0530
Hello All,
I am trying to identify if a particular file is a sparse file using
getattrlist()
I am using this : attrList.fileattr = ATTR_FILE_TOTALSIZE |
ATTR_FILE_ALLOCSIZE;
According to the man page if ATTR_FILE_ALLOCSIZE <
ATTR_FILE_TOTALSIZE the file is a sparse file.
I created the sparse file using dd
#dd if=/dev/zero of=sparse-file bs=1 count=0 seek=3g
However, both AllocSize and TotalSize are returning the same size
while actually AllocSize < TotalSize
I am using UFS
Thanks,
Rohan
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