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Re: [Bacula-users] Sparse Files
2014-10-25 10:27:52
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On 14-10-20 02:29 PM, Sam M wrote:
Hello,
I'm having issues with "Sparse Files" in Bacula. My data
was being backed up with no issues at all. Once I moved my
data onto a NetApp storage the size of the backup went up from
1.4 TB to 5 TB. I have "Sparse = yes" added in
"bacula-dir.conf" which it worked before the move to NetAPP.
Any help would be much appreciated.
Since there is no Bacula client for NetApp, you are probably backing
up over a NFS or possibly a CIFS (??) network mount. Network mounts
work very well (i.e. very fast) on NetApp if you tune them
correctly, but network mounts are a 3rd class product compared to a
directly mounted drive. Basically they have a very primitive API,
and in addition, I am not even sure that NetApp has the concept of
sparse files or if their implement of sparse files (assuming they
have one) corresponds to what Unix/Linux has (i.e. a file with holes
in it, which has similar 4096 blocking size).
Bottom line: if you have sparse files (somewhat unusual except for
Linux system files) use a regular Linux mount with a filesystem such
as EXT4 that supports sparse files as Bacula expects.
Kern
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