Messages in this thread | | | From | "Christopher S. Aker" <> | Subject | 2.6.9 - unable to unmount tmpfs | Date | Fri, 22 Oct 2004 10:49:25 -0500 |
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Kernel: 2.6.9 + skas3-v6 + cfq2 (from 2.6.9-ck1)
This box runs a bunch of UMLs -- I mount a tmpfs volume to hold the UML's memory file each time an UML runs, and with 2.6.9 I'm unable to to unmount the tmpfs volume even though there are no referring processes...
[root@host19 root]# lsof | grep "/linodes/holden/tmp" [root@host19 root]#
[root@host19 root]# mount | grep holden tmpfs on /linodes/holden/tmp type tmpfs (rw,size=64M,mode=0770) tmpfs on /linodes/holden/tmp type tmpfs (rw,size=64M,mode=0770) tmpfs on /linodes/holden/tmp type tmpfs (rw,size=64M,mode=0770)
[root@host19 root]# umount /linodes/holden/tmp umount: /linodes/holden/tmp: device is busy umount: /linodes/holden/tmp: device is busy umount: /linodes/holden/tmp: device is busy
I assume this is a bug in 2.6.9 and not UML, possibly relating to ptrace (?) since UML requires a kill -CONT <pid> to exit properly under 2.6.9 with any version of UML. I tried creating a tmpfs mount and a few files within, and it unmounted correctly.
Thanks, -Chris
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