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Thread: umount device is busy
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02-22-2013 #1
- Join Date
- Nov 2012
- Posts
- 32
umount device is busy
its showing umount: /: device is busy.
so what to do now
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02-22-2013 #2
- Join Date
- Jan 2013
- Posts
- 116
check what file system mounted and if any application running on it.
if something running then stop the service or application.
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02-22-2013 #3
- Join Date
- Sep 2012
- Location
- India
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- 29
Hi
Check where the logical Volume /dev/mapper/VolGroup00-LOgvol00 is mounted.
you can typeCode:mount
once you list mount point location, Checked if app is running.
then umount /mount-point
Best Regards.
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02-22-2013 #4
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- Nov 2012
- Posts
- 32
thanx for reply
after typing mount command the output i get is
/dev/mapper/VolGroup-Logvol00 on / ext3 (rw). how to check whc app is running?
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02-22-2013 #5
- Join Date
- Apr 2012
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- Virginia, USA
- Posts
- 1,005
/ is the root file system. You cannot unmount that directory while the system is running.
What are you trying to accomplish exactly, maybe we can be of more direct assistance?
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02-22-2013 #6
- Join Date
- Apr 2009
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- I can be found either 40 miles west of Chicago, in Chicago, or in a galaxy far, far away.
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You will get this error any time you try to umount a device that has any file/directory open when you do so, including just having a shell cd'd to a directory there. This is not uncommon. It happens to me all the time, and usually it is just that I have a shell somewhere that either has a file opened on that device, or I have a shell located there.
If you want (not safe for prime time), you can use the -f (force) option to force the unmounting of the file system - caveat user!Sometimes, real fast is almost as good as real time.
Just remember, Semper Gumbi - always be flexible!
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02-23-2013 #7
- Join Date
- Jan 2005
- Location
- Saint Paul, MN
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- 818
Since it is mounted on "/", it can not be unmounted while the OS is running as the process "init" has it busy (which is started by the kernel right after it is loaded and initialized) and it is the parent/ancestor of all jobs running on the system.
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02-23-2013 #8
- Join Date
- Feb 2010
- Location
- Berlin, Germany
- Posts
- 17
You can information about which processes are using a partition or device by typing
Code:lsof '/dev/sdX'
Code:fuser '/dev/sdX'
A radical way to kill all processes using a partition or a device would be:
Code:fuser -k '/dev/sdX''
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02-23-2013 #9
- Join Date
- Nov 2012
- Posts
- 32
hiiiiii
thanx for the reply when i enter the command: fuser -cu /dev/mapper//VolGroup00-LogVol00 the output i get is:
/dev/mapper//VolGroup00-LogVol00: 1rce(root) 2rc(root) 3rc(root) 4rc(root) 5rc(root) 6rc(root) 7rc(root) 9rc(root) 10rc(root) 12rc(root) 13rc(root) 177rc(root) 181rc(root) 183rc(root) 244rc(root) 245rc(root) 246rc(root) 247rc(root) 248rc(root) 455rc(root) 485rc(root) 486rc(root) 487rc(root) 490rc(root) 491rc(root) 496rc(root) 505rc(root) 516rc(root) 542rc(root) 1354rc(root) 2022rc(root) 2023rc(root) 2086rc(root) 2087rc(root) 2209rc(root) 2244rc(root) 2248rc(root) 2249rc(root) 2250rc(root) 2252rc(root) 2256rc(root) 2264rc(root) 2585rc(root) 2668rc(root) 4392rce(root) 4393rce(root) 4394rce(root) 4404rce(root) 4405rce(root) 4406rce(root) 4407rce(root) 4428rce(root) 4430rce(root) 4431rce(root) 4443rce(root) 4479rce(root) 4508rce(root) 4509rce(root) 4515rce(root) 4518rce(root) 4520rce(root) 4540rce(root) 4544rce(root) 4546rce(root) 4550rce(root) 4552rce(root) 4557rce(root) 4590rce(root) 4596rce(root) 4598rce(root) 4604rce(root) 4611rce(root) 4623rce(root) 4624rce(root) 4632rce(root) 4637rce(root) 4641rce(root) 4659rce(root) 4660rce(root) 4662rce(root) 4674rce(root) 4723rce(root) 4771rce(root) 4773rce(apache) 4774rce(apache) 4775rce(apache) 4776rce(apache) 4777rce(apache) 4778rce(apache) 4779rce(apache) 4780rce(apache) 4829rce(rpc) 4872rce(root) 5076rce(root) 5164rce(mysql) 5288rce(root) 5515rce(root) 5518rc(root) 5519rc(root) 5520rc(root) 5521rc(root) 5522rc(root) 5523rc(root) 5524rc(root) 5525rc(root) 5526rc(root) 5527rc(root) 5530rce(root) 5642rce(root) 5646rce(root) 5650rce(root)
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02-25-2013 #10
- Join Date
- Feb 2013
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- 1