A friend of the user has a small company with 50 employees, asks the user if the cjc can be adapted for his firm They want to have that functionality also.Ħ. the family members of our user notice their systems often stall during copying, while the system of our user keeps running fine. our user gets involved in website maintenance or administrating an IRC server and requires sshfs for those.ĥ. we add non-local mountpoints like a NAS and cloud storage. Now our device list becomes dynamic and bigger. same as 1, but we add removable devices like external drives, cd/dvd player, mediaplayer, smartphone. all devices are local, always present on 1 computer system which only has 1 user.ĭevice presence and capabilities are static, the job list is dynamic. How this is achieved depends on the scope(s) you target. In order to optimize the jobs cjc needs to understand the capabilities of the devices and determine clashes. It also needs a way to keep track of the running jobs. This makes clear the cjc needs to be able to determine which devices are involved in copy operations. Proritize multiple copy operations based on which devices are involved so they finish as fast as possible. It all depends on what scope you wan the program to be useful in, and how easy it should be to change the scope.Ī high level description of the "copy job controller" (cjc for short) could look like this : It is possible to infer the source/target devices of most commands by looking at their parameters: for each one that contains a path separator (typically "/"), if the assumed-to-be-a-path exists, get its underlying device. Optionally queue new jobs with device-based logic. Set stdin/stdout/stderr when queueing a command. Our tool would work in the fashion of batch/at with those additional features: I've had that crazy idea (understand: maybe stupid and unfeasible) about a generic job control system which would handle device-based queueing heuristically. It is sensible to say, however, that a "copy daemon" is a shortsighted idea: what if I want the same feats as rsync in my daemon? I can't afford to copy all features of all copy-programs in the world. I want a a tool that can do that automatically, hence the original question on a copy daemon, specifically. I'm not looking for some kernel IO scheduling, I'd rather process the copy queue based on the source/target devices: when 2 copy jobs don't share devices, they can usually be run in parallel for max efficiency.
parallelize the queue according to the source/target devices. look at stdout / stderr (other than by e-mail) But unless I'm mistaken, there is no simple way to:
As stand-alone job managers, they are close to what I'm looking for. I completely forgot that at/batch existed, thanks for the reminder. As for the multiplexers (or the dtach tool for that matters) it makes it rather inconvenient if you want to have bring job control to Emacs (Dired, Helm), vifm, ranger. If I close my shell, I lose all the job information.
Multiplexers and shell job controls (^z+fg/bg) have the design defect that they interface something that does not semantically belong to them.
Ultracopier combine queue free#
$ cpd -pause 2 # /media/2a and /media/2b are not used anymore so copy '3' is free to go.īy itself such a tool would be awesome, but most importantly, since it is a commandline tool, it could replace the very limited copy functionality of Emacs (Dired, Helm), ranger. $ cpc /media/2a/qux /media/2b/qux # Since this copy uses the same devices as the previous one, it is not run in parallel.ġ: '/media/1a/foo'->'/media/1b/foo'Ģ: '/media/2a/bar'->'/media/2b/bar'ģ: '/media/2a/qux'->'/media/2b/qux' Processing triggers for man-db (2.7.5-1). 244561 files and directories currently installed.) Selecting previously unselected package ultracopier. Get:1 xenial/universe amd64 ultracopier amd64 0.3.1.0-1 The following NEW packages will be installed:Ġ upgraded, 1 newly installed, 0 to remove and 234 not upgraded.Īfter this operation, 4,725 kB of additional disk space will be used. Use 'sudo apt autoremove' to remove them. Gambas3-gb-desktop gambas3-gb-desktop-x11 gambas3-gb-form gambas3-gb-gtk gambas3-gb-gui gambas3-gb-image gambas3-gb-qt5 gambas3-gb-settings gambas3-runtime The following packages were automatically installed and are no longer required:
Ultracopier combine queue install#
# Install Ultracopier advance copy software
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