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vzfsync


Section: Containers (8)
Updated: 31 Mar 2014
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NAME

vzfsync – perform fsync/fdatasync/fadvise on files
 

SYNOPSIS



vzfsync

{
-s,–sync

|
-d,–datasync

}

[-n,--dontneed ]

file

[

file ...]


vzfsync

–help


 

DESCRIPTION

This utility performs
fsync(2)

or
fdatasync(2)

for every supplied file name.
It can also optionally perform
posix_fadvise(2)

with the argument of
POSIX_FADV_DONTNEED.

It is used from within
vzmigrate(8)

utility for live migration, right after copying ploop delta files
(and before suspending a container) to sync those copied files to disk
in order to optimize subsequent ploop mount time and, utlimately,
container frozen time.
 

OPTIONS


-s,–sync


Perform fsync.
-d,–datasync


Perform fdatasync.
-n,–dontneed


Perform posix_fadvise(POSIX_FADV_DONTNEED).

 

EXIT STATUS

Returns 0 upon success, or an appropriate error code in case of an error:


1

Invalid usage
2

Failed to perform some requested operations on one or many files.

 

SEE ALSO

fsync(2),

fdatasync(2),

posix_fadvise(2).

 

LICENSE

Copyright (C) 2014, Parallels, Inc. Licensed under GNU GPL v2.



 

Index



NAME

SYNOPSIS

DESCRIPTION

OPTIONS

EXIT STATUS

SEE ALSO

LICENSE



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