?? How to auto mount logical volume before transmission-daemon starts at start up

Nhatorama · 01-16-2015, 11:04 PM

I have been using an old computer to download my torrents and this has been my usual routine:

1. Press the power button.
2. Connect to the computer through Putty
3. Log in
4. Gain su privileges

Startup Commands:

Code:

/etc/init.d/transmission-daemon stop
apt-get update
mount -t ext4 /dev/vgTransmission/lvTransmission /mnt/transmissionVault
/etc/init.d/transmission-daemon start

Shutdown Commands:

Code:

/etc/init.d/transmission-daemon stop
umount /dev/vgTransmission/lvTransmission
shutdown -h now

I was wondering if there is a way to configure a computer to automatically mount a logical volume “before” the transmission-daemon starts at boot up (note my first Startup Command).

I think the instructions here are related to what I want to do, but I want to get some advice before I attempt to do anything dangerous:
http://tille.garrels.be/training/tld...#sect_04_02_04

My perfect scenario would be:

Startup Routine:
1. Send WakeOnLan magic packet to computer to turn it on.
2. Computer boots up, mounts the transmissionVault logical volume
3. Wait 10 seconds to ensure that the logical volume has finished mounting
4. Start transmission-daemon

Shutdown Routine:
Send WakeOnLan magic packet to turn off computer, i.e.: Execute “shutdown -h now”
The shutdown command should include:
1. Stop transmission-daemon
2. Wait 10 seconds to ensure that transmission-daemon has finished shutting down
3. Umount transmissionVault logical volume

Recently the Ethernet port of my transmission box has stopped working, so I went ahead and swapped the motherboard with another old motherboard, added a few hard drives, installed a fresh copy of Debian, and re-created the LVM logical volume for transmissionVault. I pretty much have a fairly stock system running at the moment.

Running a headless 3.2.0-4-amd64

unSpawn · 01-17-2015, 07:04 PM

For startup:
- mounting /mnt/transmissionVault can be done automagically via /etc/fstab (no reason why you shouldn't),
- ensure /etc/init.d/transmission-daemon doesn't start on boot,
- create a shell script that performs 'apt-get update; /etc/init.d/transmission-daemon start',
- add script in /etc/crontab as a "@reboot" job.

For shutdown:
- umounting /mnt/transmissionVault can be done automagically via /etc/fstab,
- stopping /etc/init.d/transmission-daemon can be done automagically as well, just depends on how you configured update-rc.d / insserv / whatever else Debian uses.

Nhatorama · 01-17-2015, 09:00 PM

Hi unSpawn, thank you for answering. Here's what I've put together so far. I haven't executed any of these on the computer yet.

Output of fdisk -l:

Code:

Disk /dev/mapper/vgTransmission-lvTransmission: 2454.4 GB, 2454376677376 bytes
255 heads, 63 sectors/track, 298394 cylinders, total 4793704448 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

Disk /dev/mapper/vgTransmission-lvTransmission doesn't contain a valid partition table

Output of “df -h”:

Code:

/dev/mapper/vgTransmission-lvTransmission               2.2T  201M  2.1T   1% /mnt/transmissionVault

For startup:
- mounting /mnt/transmissionVault can be done automagically via /etc/fstab (no reason why you shouldn't),
Output of “vi fstab”:

Code:

# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
# / was on /dev/sda1 during installation
UUID=38c23532-aaa8-4ed7-b34c-9ac4778b3f00 /               ext4    errors=remount-ro 0       1
# swap was on /dev/sda5 during installation
UUID=854c3938-5cf5-458e-a767-881d5f8919f6 none            swap    sw              0       0
/dev/sr0        /media/cdrom0   udf,iso9660 user,noauto     0       0

#ADD THIS
/dev/vgTransmission/lvTransmission /mnt/transmissionVault ext4 defaults 0 1

- ensure /etc/init.d/transmission-daemon doesn't start on boot,

Code:

update-rc.d -f transmission-daemon remove

- create a shell script that performs 'apt-get update; /etc/init.d/transmission-daemon start',
Script:
Create the script inside “bin” folder:

Code:

vi startTransmission

Add the following in the script and save it:

Code:

# Script to update the system and start Transmission
apt-get update
/etc/init.d/transmission-daemon start

exit 0

Make the script executable:

Code:

chmod 755 /etc/init.d/startTransmission

Make the script execute at startup:

Code:

update-rc.d startTransmission defaults

- add script in /etc/crontab as a "@reboot" job.
I don't know how to do this, but this is what my crontab shows.

Output of “vi crontab”:

Code:

# /etc/crontab: system-wide crontab
# Unlike any other crontab you don't have to run the `crontab'
# command to install the new version when you edit this file
# and files in /etc/cron.d. These files also have username fields,
# that none of the other crontabs do.

SHELL=/bin/sh
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

# m h dom mon dow user  command
17 *    * * *   root    cd / && run-parts --report /etc/cron.hourly
25 6    * * *   root    test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.daily )
47 6    * * 7   root    test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.weekly )
52 6    1 * *   root    test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.monthly )
#

For shutdown:
- umounting /mnt/transmissionVault can be done automagically via /etc/fstab,
Does this cover both startup and shutdown?

Code:

update-rc.d startTransmission defaults

- stopping /etc/init.d/transmission-daemon can be done automagically as well, just depends on how you configured update-rc.d / insserv / whatever else Debian uses.
I think I have to modify this, I don't know what to modify though.

Code:

/dev/vgTransmission/lvTransmission /mnt/transmissionVault ext4 defaults 0 1

Nhatorama · 01-29-2015, 06:55 PM

Can someone check my previous post for errors?