22 Nov
2010
22 Nov
'10
12:16 a.m.
Hello friends
I use rsync to copy my incremental data to an external harddisk every 5 minutes using
cron. However, if the external harddisk, connected to the USB port is disconnected, the
root partition fills up. I need your help to create a proper script that does the
following:
Before running the rsync copying script, I want to
a) Add some statement that would check if the external harddisk is attached and
mounted.
b) If not, it should be mounted before the copying script is run to copy only to this
external disk.
c) If it is not mounted, mount should be attempted, and if it does not mount, rsync
copying command should not be executed.
Is there any better way to do this?
Under no circumstances, I want the rsync script to execute if the USB connection is not
active.
Regards and thank you all in advance
Kshitiz
22 Nov
22 Nov
9:04 a.m.
On Monday 22 Nov 2010, Kshitiz wrote:
I use rsync to copy my incremental data to an external
harddisk every
5 minutes using cron. However, if the external harddisk, connected
to the USB port is disconnected, the root partition fills up. I need
your help to create a proper script that does the following:
Before running the rsync copying script, I want to
a) Add some statement that would check if the external harddisk
is attached and mounted. b) If not, it should be mounted before the
copying script is run to copy only to this external disk. c) If it
is not mounted, mount should be attempted, and if it does not mount,
rsync copying command should not be executed.
Is there any better way to do this?
Under no circumstances, I want the rsync script to execute if the USB
connection is not active.
Assuming your USB device is /dev/hdb1 and it gets mounted on
/media/hdb1, you can try the following:
1. Add an entry in /etc/fstab:
/dev/hdb1 /media/hdb1 auto user 0 0
2. Make an rsync script of the form:
if ! mount | fgrep /dev/hdb1 | fgrep /media/hdb1 > /dev/null
then
mount /dev/hdb1
fi
if mount | fgrep /dev/hdb1 | fgrep /media/hdb1 > /dev/null
then
rsync...
else
echo "USB device not mounted, aborting" >&2
exit 1
fi
This code is provided without any claim to working or warranty, and if
it fails to run or causes your cat to be run over by a road roller or
your wife to divorce you or bedbugs to infest your bedroom, I am not
responsible.
Regards,
-- Raj
--
Raj Mathur raju(a)kandalaya.org http://kandalaya.org/
GPG: 78D4 FC67 367F 40E2 0DD5 0FEF C968 D0EF CC68 D17F
PsyTrance & Chill: http://schizoid.in/ || It is the mind that moves
9:19 a.m.
2010/11/22 Kshitiz <kshitij_kotak(a)hotmail.com>om>:
Before running the rsync copying script, I want to
a) Add some statement that would check if the external harddisk is attached and
mounted.
b) If not, it should be mounted before the copying script is run to copy only to this
external disk.
c) If it is not mounted, mount should be attempted, and if it does not mount, rsync
copying command should not be executed.
All mounted filesystems have an entry in /proc/mounts. Your script can
take advantage of this.
if ! grep -q /backup /proc/mounts; then
if ! mount -t ext3 /dev/sdb1 /backup; then
exit 1; # Mount failed, bail out
fi
fi
# Regular stuff here
9:47 a.m.
On Mon, Nov 22, 2010 at 7:49 AM, Binand Sethumadhavan <binand(a)gmail.com> wrote:
All mounted filesystems have an entry in /proc/mounts.
Your script can
take advantage of this.
if ! grep -q /backup /proc/mounts; then
if ! mount -t ext3 /dev/sdb1 /backup; then
exit 1; # Mount failed, bail out
fi
fi
another non-portable way of checking it is df -l.
Regards,
NMK.
28 Nov
28 Nov
1:43 p.m.
--------------------------------------------------
From: "Nadeem M. Khan" <nadeem.m.khan(a)gmail.com>
Sent: Monday, November 22, 2010 9:47 AM
To: "GNU/Linux Users Group, Mumbai, India" <linuxers(a)mm.ilug-bom.org.in>
Subject: Re: [ILUG-BOM] running script only if USB is mounted
On Mon, Nov 22, 2010 at 7:49 AM, Binand Sethumadhavan
<binand(a)gmail.com>
wrote:
Thank you Nadeem, will check out this script and revert in case of it not
working, etc.
Regards Kshitiz
All mounted filesystems have an entry in
/proc/mounts. Your script can
take advantage of this.
if ! grep -q /backup /proc/mounts; then
if ! mount -t ext3 /dev/sdb1 /backup; then
exit 1; # Mount failed, bail out
fi
fi
another non-portable way of checking it is df -l.
Regards,
NMK.
--
http://mm.glug-bom.org/mailman/listinfo/linuxers
1:44 p.m.
--------------------------------------------------
From: "Binand Sethumadhavan" <binand(a)gmail.com>
Sent: Monday, November 22, 2010 9:19 AM
To: "GNU/Linux Users Group, Mumbai, India" <linuxers(a)mm.ilug-bom.org.in>
Subject: Re: [ILUG-BOM] running script only if USB is mounted
2010/11/22 Kshitiz <kshitij_kotak(a)hotmail.com>om>:
Thank you Binand Reg Kshitiz
Before running the rsync copying script, I want
to
a) Add some statement that would check if the external harddisk is
attached and mounted.
b) If not, it should be mounted before the copying script is run to
copy only to this external disk.
c) If it is not mounted, mount should be attempted, and if it does not
mount, rsync copying command should not be executed.
All mounted filesystems have an entry in /proc/mounts. Your script can
take advantage of this.
if ! grep -q /backup /proc/mounts; then
if ! mount -t ext3 /dev/sdb1 /backup; then
exit 1; # Mount failed, bail out
fi
fi
# Regular stuff here
--
http://mm.glug-bom.org/mailman/listinfo/linuxers
2 Dec
2 Dec
9:33 p.m.
--------------------------------------------------
From: "Raj Mathur (??? ?????)" raju(a)linux-delhi.org
On Monday 22 Nov 2010, Kshitiz wrote:
Dear Raj & rest of my linuxer friends
Thank you for your efforts and help. I am pasting my code which gives me syntax error
unexpected end on line 17. Need help with why and correction? Am missing something and
cant figure out what?
Urgent help will be really really really appreciated.
-------------
if ! mount -t ntfs | grep /dev/sdc1 | grep /backup > /dev/null
then
mount /dev/sdc1
fi
if mount -t ntfs | grep /dev/sdc1 | grep /backup > /dev/null
then
#is a previous rsync process still running?
ps -ef | grep 'rsync' | grep -v 'grep rsync'| grep -v
'rsync.sh'> /dev/null
if [ $? -eq 1 ]; then #rsync isn't running - let's launch it now
rsync -avz -e --delete /home/ /backup
else
echo "rsync is still running ...please wait and try again later"
fi
fi
--------------
Regards and thanks in advance.
Kshitiz
I use rsync to copy my incremental data to an
external harddisk every
5 minutes using cron. However, if the external harddisk, connected
to the USB port is disconnected, the root partition fills up. I need
your help to create a proper script that does the following:
Before running the rsync copying script, I want to
a) Add some statement that would check if the external harddisk
is attached and mounted. b) If not, it should be mounted before the
copying script is run to copy only to this external disk. c) If it
is not mounted, mount should be attempted, and if it does not mount,
rsync copying command should not be executed.
Assuming your USB device is /dev/hdb1 and it gets mounted on
/media/hdb1, you can try the following:
1. Add an entry in /etc/fstab:
/dev/hdb1 /media/hdb1 auto user 0 0
2. Make an rsync script of the form:
if ! mount | fgrep /dev/hdb1 | fgrep /media/hdb1 > /dev/null
then
mount /dev/hdb1
fi
if mount | fgrep /dev/hdb1 | fgrep /media/hdb1 > /dev/null
then
rsync...
else
echo "USB device not mounted, aborting" >&2
exit 1
fi
3 Dec
3 Dec
12:55 p.m.
2010/12/2 Kshitiz <kshitij_kotak(a)hotmail.com>om>:
Thank you for your efforts and help. I am pasting my
code which gives me syntax error unexpected end on line 17. Need help with why and
correction? Am missing something and cant figure out what?
Quite obviously. The right way to ask for help debugging shellscripts
is to run it with "bash -x script.sh", copy/paste the entire output to
pastebin.com or something and then post a link here.
ps -ef | grep 'rsync' | grep -v
'grep rsync'| grep -v 'rsync.sh'> /dev/null
Wtf is all this?? Haven't heard of pidof(1)?
Even if you don't have pidof, you could do:
ps -ef | grep '[r]sync'
and get rid of that pipeline of greps.
Binand
4 Dec
4 Dec
12:25 a.m.
On Thursday 02 December 2010 09:33 PM, Kshitiz wrote:
-------------
if ! mount -t ntfs | grep /dev/sdc1 | grep /backup> /dev/null
then
mount /dev/sdc1
fi
if mount -t ntfs | grep /dev/sdc1 | grep /backup> /dev/null
then
Instead of the above 'grep bhai grep' lines simply do an
if grep -q "/mount_point" /etc/mtab
then echo "The device is mounted"
else
mount /mount_point # Whatever you defined in /etc/fstab for your backup
device.
# Now continue further with the remaining rsync script again using
whatever Binad said in the other mail.
if
ps -ef | grep '[r]sync'
then
# whatever.
if [ $? -eq 1 ]; then #rsync isn't running -
let's launch it now
rsync -avz -e --delete /home/ /backup
rsync --delete /home /backup?
If someone has deleted a file from the source dir, you are making sure
that the available backup is also deleted? Not a very pleasant situation.
Assuming that your script is for usb devices and runs automatically, is
there any protection to ensure that someone does not plug in a personal
disk and walk away with the data so neatly backed up?
--
As a proper list etiquette...
Please trim your replies.
Post your replies below the relevant original text, leaving a line space.
Do not re-use old messages to write new ones.
Regards,
Rony.
4745
days inactive
4757
days old
8 comments
5 participants
participants (5)
-
Binand Sethumadhavan -
Kshitiz -
Nadeem M. Khan -
Raj Mathur (राज माथुर) -
Rony