gomount

Fast user mount of multiple remote mount points, skipping the responding servers not responding to http probe (ping-ish). Mount points need to be configured in fstab. Speed is achieved by using Go routines to concurrently send http probes to the targeted servers and mount the servers. It's fast compared to sequential mounts in a bash script due to the way mount(8) tries to connect to remote servers that are down. It takes a couple of seconds before mount(8) exits with a connection reset by peer error message. This Go program first probes the servers with a short timeout (150 ms) which is usually enough to determine if a server is up and then proceed with the actual mount. Each server is processed in concurrent Go routines.

In a comparison test, this Go program is about 20 times faster for a list of 9 mounts on "up" servers and 3 "downs".

This go program executes exec.Command(mount(8)) rather than the mount(2) used by the Go function syscall.Mount() because mount(2) requires root privileges.

Linux only. Could possibly also work on OS-X. Not tested.

config file

You first need to make a config file and set its full access path/name into the constant confFile around line 32 of the code.

It consists of 4 fields, comma separated lines with the following pattern:

[short name],[mount point as defined in fstab],[host name or IP address],[port to ping]

Commented out lines will be ignored and config file will be tested for validity at run time.

config file example

arsule-jeanluc,/home/jeanluc/my-mnt/arsule_jeanluc,arsule,221
# This is a comment
arsule-web,/home/jeanluc/my-mnt/arsule_web,arsule,221
rpi-2,/home/jeanluc/my-mnt/rpi_2,rpi_2,22
ubnt,/home/jeanluc/my-mnt/ubnt,192.168.0.201,2211

Usage

$ gomount [options]

Options

• -t Change default timeout for ping (150 ms).
• -v Increase verbosity by showing error messages.
• -h This help screen.

Typical output

$ gomount

bizzard-jeanluc      already mounted
vps                  mounted
bizzard-web          already mounted
ubnt                 already mounted
vps-jeanluc          mounted
gaubert-smb          not responding  
arsule-jeanluc       not responding  
rpi-2                not responding  
gaubert-sshfs        not responding  
arsule-web           not responding  
vps-web              mounted

Typical output with increased verbosity

$ gomount -v

gaubert-sshfs        already mounted
ubnt                 already mounted
gaubert-smb          mount: /home/jeanluc/my-mnt/gaubert_sambaz: No such file or directory
arsule-web           dial tcp 192.168.0.153:221: i/o timeout
arsule-jeanluc       dial tcp 192.168.0.153:221: i/o timeout
rpi-2                dial tcp 192.168.0.156:22: i/o timeout

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(c) Jean-Luc Lacroix