[CentOS] unable to umount
J Martin Rushton
martinrushton56 at btinternet.com
Sun Feb 22 14:51:14 UTC 2015
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On 22/02/15 14:19, Leon Fauster wrote:
> Hi,
>
> on an EL5 XEN DOM0 system I have following volume
>
> $ df -h /srv Filesystem Size Used Avail Use% Mounted
> on /dev/sdc1 917G 858G 60G 94% /srv
>
> that partition was used by virtual machines but they were all
> halted.
>
> service xendomains stop
>
> $ xm list Name ID Mem(MiB)
> VCPUs State Time(s) Domain-0 0
> 3000 2 r----- 695.1
>
> $ service xend stop
>
>
> nothing is using the partition $ lsof |grep srv <empty>
Run as root:
# lsof +D /srv
>
> $ fuser -m /srv <empty>
>
Again, run this as root. Compare (test example from my system):
$ fuser -m /boot 2>/dev/null | wc
0 44 264
# fuser -m /boot 2>/dev/null | wc
0 223 1338
That's 180 processes I'd miss as an ordinary user.
> $ fuser -km /srv <empty>
>
>
> but i can not umount /srv
>
> $ umount /srv umount: /srv: device is busy umount: /srv: device is
> busy
>
I'm sure you've checked, but where is your PWD?
>
> what could keeping the device "busy" ... ?
>
> __ Thanks,
>
> LF
>
>
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>
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