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DingbatCA
Guru
Joined: 07 Jul 2004
Posts: 384
Location: Portland Or
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 Posted: Wed Jun 18, 2008 11:25 pm Post subject: How do I check for a dead mount? |
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How do I check for a dead mount?
So I pulled my USB drive out, with out unmounting it. I know I have a dead mount at /mnt/usb_drive. If I `ls` that dir it will hang. If I `df`, it will hang. So how do I check for dead mounts with out hanging? This also applies to NFS mounts. |
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crazycat
l33t
Joined: 26 Aug 2003
Posts: 838
Location: Hamburg, Germany
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| Posted: Thu Jun 19, 2008 3:35 am Post subject: |
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| There is a kernel message when you unplug a device, you can trap and use it wtih udev. |
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DingbatCA
Guru
Joined: 07 Jul 2004
Posts: 384
Location: Portland Or
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| Posted: Thu Jun 19, 2008 3:37 am Post subject: |
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| How about when an NFS mount is lost? |
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d2_racing
Bodhisattva
Joined: 25 Apr 2005
Posts: 13047
Location: Ste-Foy,Canada
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| Posted: Thu Jun 19, 2008 11:41 am Post subject: |
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| crazycat wrote: | | There is a kernel message when you unplug a device, you can trap and use it wtih udev. |
Do you have an exemple of that plz ? |
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crazycat
l33t
Joined: 26 Aug 2003
Posts: 838
Location: Hamburg, Germany
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| Posted: Sat Jun 21, 2008 10:52 am Post subject: |
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create a file /etc/udev/rules.d/99-something.rules
and put there for example.
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ACTION=="remove", KERNEL=="sd[a-z][0-9]", RUN+="/bin/umount -l /mnt/usb_%k"
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That's my example, I add usb disk not with hal but with udev rules.
You have to rewrite this example depending on where your device was mounted. Also this line wont unmount a drive, if it's still being accesed( a broser window is sill open ). You have to killall every program which has a file handle opend on that device(you can determine that with "lsof"). That was a complex solution. I think it's easier to use hal, which should do this automatically. I can't help you with nfs but maybe hal can handle it. |
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Kernel & Hardware
