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moveonenospc: enhance the feature to allow using a policy

Browse source 
Just like functions you can now set a policy for moveonfreenospc. This
allows for more flexibility.

For backwards compatibility moveonfreenospc=true is converted to
moveonfreenospc=mfs.

minfreespace does apply which is slightly different from original behavior.
This commit is contained in:
Antonio SJ Musumeci 2020-07-12 14:03:14 -04:00
parent f2d4fbfdb2
commit 08d267fc61
23 changed files with 483 additions and 148 deletions
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26
src/fuse_write_buf.cpp
View file

@ -19,10 +19,8 @@
#include "fileinfo.hpp"
#include "fs_movefile.hpp"
#include "fuse_write.hpp"
#include "policy.hpp"
#include "ugid.hpp"
#include <fuse.h>
#include "fuse.h"
#include <string>
#include <vector>
@ -63,22 +61,24 @@ namespace l
static
int
move_and_write_buf(fuse_bufvec *src_,
move_and_write_buf(FileInfo *fi_,
fuse_bufvec *src_,
off_t offset_,
FileInfo *fi_)
int err_)
{
int rv;
uint64_t extra;
vector<string> paths;
const ugid::Set ugid(0,0);
const Config &config = Config::ro();
config.branches.to_paths(paths);
if(config.moveonenospc.enabled == false)
return err_;
extra = fuse_buf_size(src_);
rv = fs::movefile(paths,fi_->fusepath,extra,fi_->fd);
rv = fs::movefile_as_root(config.moveonenospc.policy,
config.branches,
config.minfreespace,
fi_->fusepath,
&fi_->fd);
if(rv == -1)
return -ENOSPC;
return err_;
return l::write_buf(fi_->fd,src_,offset_);
}
@ -96,7 +96,7 @@ namespace FUSE
rv = l::write_buf(fi->fd,src_,offset_);
if(l::out_of_space(-rv))
rv = l::move_and_write_buf(src_,offset_,fi);
rv = l::move_and_write_buf(fi,src_,offset_,rv);
return rv;
}