How to make umount wait, until a device is not busy?

up vote
2
down vote

favorite

I have a bash script file where I execute a bunch of commands.

#!/bin/bash
umount /media/hdd1
umount /media/hdd2
something1
something2

But since the comands later in the file work with the umounted HDD, I need to make sure the umount is successful before continuing.

I can of course check if the umount failed and just exit 1, but that is not ideal.

So basically, what I would like to do, is somehow make the umount command wait, until the device is not busy and then umount the HDD and continue executing the script.

It would thus work like this:

#!/bin/bash
umount /media/hdd1 # Device umounted without any problems continuing the script..
umount /media/hdd2 # Device is busy! Let's just sit around and wait until it isn't... let's say 5 minutes later whatever was accessing that HDD isn't anymore and the umount umounts the HDD and the script continues
something1
something2

Thank you.

asked 3 hours ago

Askerman

366513

Maybe the -l (ell) switch? See linux.die.net/man/8/umount
â€“Â PerlDuck
3 hours ago

I don't think the lazy umount option blocks the script from executing until it finishes
â€“Â Askerman
3 hours ago

add a commentÂ |Â

up vote
2
down vote

favorite

I have a bash script file where I execute a bunch of commands.

#!/bin/bash
umount /media/hdd1
umount /media/hdd2
something1
something2

But since the comands later in the file work with the umounted HDD, I need to make sure the umount is successful before continuing.

I can of course check if the umount failed and just exit 1, but that is not ideal.

So basically, what I would like to do, is somehow make the umount command wait, until the device is not busy and then umount the HDD and continue executing the script.

It would thus work like this:

#!/bin/bash
umount /media/hdd1 # Device umounted without any problems continuing the script..
umount /media/hdd2 # Device is busy! Let's just sit around and wait until it isn't... let's say 5 minutes later whatever was accessing that HDD isn't anymore and the umount umounts the HDD and the script continues
something1
something2

Thank you.

asked 3 hours ago

Askerman

366513

Maybe the -l (ell) switch? See linux.die.net/man/8/umount
â€“Â PerlDuck
3 hours ago

I don't think the lazy umount option blocks the script from executing until it finishes
â€“Â Askerman
3 hours ago

add a commentÂ |Â

up vote
2
down vote

favorite

I have a bash script file where I execute a bunch of commands.

#!/bin/bash
umount /media/hdd1
umount /media/hdd2
something1
something2

But since the comands later in the file work with the umounted HDD, I need to make sure the umount is successful before continuing.

I can of course check if the umount failed and just exit 1, but that is not ideal.

So basically, what I would like to do, is somehow make the umount command wait, until the device is not busy and then umount the HDD and continue executing the script.

It would thus work like this:

#!/bin/bash
umount /media/hdd1 # Device umounted without any problems continuing the script..
umount /media/hdd2 # Device is busy! Let's just sit around and wait until it isn't... let's say 5 minutes later whatever was accessing that HDD isn't anymore and the umount umounts the HDD and the script continues
something1
something2

Thank you.

asked 3 hours ago

Askerman

366513

I have a bash script file where I execute a bunch of commands.

#!/bin/bash
umount /media/hdd1
umount /media/hdd2
something1
something2

But since the comands later in the file work with the umounted HDD, I need to make sure the umount is successful before continuing.

I can of course check if the umount failed and just exit 1, but that is not ideal.

So basically, what I would like to do, is somehow make the umount command wait, until the device is not busy and then umount the HDD and continue executing the script.

It would thus work like this:

#!/bin/bash
umount /media/hdd1 # Device umounted without any problems continuing the script..
umount /media/hdd2 # Device is busy! Let's just sit around and wait until it isn't... let's say 5 minutes later whatever was accessing that HDD isn't anymore and the umount umounts the HDD and the script continues
something1
something2

Thank you.

bash mount umount

asked 3 hours ago

Askerman

366513

asked 3 hours ago

Askerman

366513

asked 3 hours ago

Askerman

366513

asked 3 hours ago

Askerman

366513

asked 3 hours ago

Askerman

366513

Maybe the -l (ell) switch? See linux.die.net/man/8/umount
â€“Â PerlDuck
3 hours ago

I don't think the lazy umount option blocks the script from executing until it finishes
â€“Â Askerman
3 hours ago

add a commentÂ |Â

Maybe the -l (ell) switch? See linux.die.net/man/8/umount
â€“Â PerlDuck
3 hours ago

I don't think the lazy umount option blocks the script from executing until it finishes
â€“Â Askerman
3 hours ago

Maybe the -l (ell) switch? See linux.die.net/man/8/umount
â€“Â PerlDuck
3 hours ago

I don't think the lazy umount option blocks the script from executing until it finishes
â€“Â Askerman
3 hours ago

add a commentÂ |Â

1 Answer
1

active

oldest

votes

up vote
2
down vote

I think the following script will do the job. It should be run with sudo (superuser permissions).

There is a function doer with a while loop, that checks with mountpoint if a device is mounted at the specified mount point, and if it is, tries to unmount it with umount. When the logical variable busy is false, the while loop is finished and the script can start 'doing some things'.

#!/bin/bash


function doer() 

busy=true
while $busy
do
 if mountpoint -q "$1"
 then
 umount "$1" 2> /dev/null
 if [ $? -eq 0 ]
 then
 busy=false # umount successful
 else
 echo -n '.' # output to show that the script is alive
 sleep 5 # 5 seconds for testing, modify to 300 seconds later on
 fi
 else
 busy=false # not mounted
 fi
done


########################

# main

########################

doer /media/hdd1
doer /media/hdd2

echo ''
echo 'doing something1'
echo 'doing something2'

edited 11 mins ago

answered 2 hours ago

sudodus

20.7k32768

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1 Answer
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1 Answer
1

active

oldest

votes

up vote
2
down vote

I think the following script will do the job. It should be run with sudo (superuser permissions).

#!/bin/bash


function doer() 

busy=true
while $busy
do
 if mountpoint -q "$1"
 then
 umount "$1" 2> /dev/null
 if [ $? -eq 0 ]
 then
 busy=false # umount successful
 else
 echo -n '.' # output to show that the script is alive
 sleep 5 # 5 seconds for testing, modify to 300 seconds later on
 fi
 else
 busy=false # not mounted
 fi
done


########################

# main

########################

doer /media/hdd1
doer /media/hdd2

echo ''
echo 'doing something1'
echo 'doing something2'

edited 11 mins ago

answered 2 hours ago

sudodus

20.7k32768

add a commentÂ |Â

up vote
2
down vote

I think the following script will do the job. It should be run with sudo (superuser permissions).

#!/bin/bash


function doer() 

busy=true
while $busy
do
 if mountpoint -q "$1"
 then
 umount "$1" 2> /dev/null
 if [ $? -eq 0 ]
 then
 busy=false # umount successful
 else
 echo -n '.' # output to show that the script is alive
 sleep 5 # 5 seconds for testing, modify to 300 seconds later on
 fi
 else
 busy=false # not mounted
 fi
done


########################

# main

########################

doer /media/hdd1
doer /media/hdd2

echo ''
echo 'doing something1'
echo 'doing something2'

edited 11 mins ago

answered 2 hours ago

sudodus

20.7k32768

add a commentÂ |Â

up vote
2
down vote

I think the following script will do the job. It should be run with sudo (superuser permissions).

#!/bin/bash


function doer() 

busy=true
while $busy
do
 if mountpoint -q "$1"
 then
 umount "$1" 2> /dev/null
 if [ $? -eq 0 ]
 then
 busy=false # umount successful
 else
 echo -n '.' # output to show that the script is alive
 sleep 5 # 5 seconds for testing, modify to 300 seconds later on
 fi
 else
 busy=false # not mounted
 fi
done


########################

# main

########################

doer /media/hdd1
doer /media/hdd2

echo ''
echo 'doing something1'
echo 'doing something2'

edited 11 mins ago

answered 2 hours ago

sudodus

20.7k32768

I think the following script will do the job. It should be run with sudo (superuser permissions).

#!/bin/bash


function doer() 

busy=true
while $busy
do
 if mountpoint -q "$1"
 then
 umount "$1" 2> /dev/null
 if [ $? -eq 0 ]
 then
 busy=false # umount successful
 else
 echo -n '.' # output to show that the script is alive
 sleep 5 # 5 seconds for testing, modify to 300 seconds later on
 fi
 else
 busy=false # not mounted
 fi
done


########################

# main

########################

doer /media/hdd1
doer /media/hdd2

echo ''
echo 'doing something1'
echo 'doing something2'

edited 11 mins ago

answered 2 hours ago

sudodus

20.7k32768

edited 11 mins ago

answered 2 hours ago

sudodus

20.7k32768

answered 2 hours ago

sudodus

20.7k32768

answered 2 hours ago

sudodus

20.7k32768

add a commentÂ |Â

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