Re: [Vserver] lvremove: "Can't remove open logical volume"
On Tue, Sep 19, 2006 at 01:29:26PM +0200, Mehdi Bennani wrote: > SOLVED ! ! ! > > Hi all, > > I just found out that > vnamespace -e [namespace of context ] umount /your/lvm/volume > must be performed TWO times in each namespace: > > -with /your/lvm/volume as the mountpoint, i.e /vservers/vs01 > -with /your/lvm/volume as the lvm device, i.e /dev/volume1/vs01 > > Then I have to umount BOTH mountpoint and lvm device on the host > system for the lvremove command to work. hmm, somehow I doubt that. if possible, double check with 'cat /proc/mounts' inside the guest that the first one is the correct path, IMHO the second one should be sufficient ... > Again, thank you so much for your help and for your work on the > vserver project! you're welcome! > Best regards, best, Herbert > Mehdi Bennani > ___ > Vserver mailing list > Vserver@list.linux-vserver.org > http://list.linux-vserver.org/mailman/listinfo/vserver ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] lvremove: "Can't remove open logical volume"
SOLVED ! ! ! Hi all, I just found out that vnamespace -e [namespace of context ] umount /your/lvm/volume must be performed TWO times in each namespace: -with /your/lvm/volume as the mountpoint, i.e /vservers/vs01 -with /your/lvm/volume as the lvm device, i.e /dev/volume1/vs01 Then I have to umount BOTH mountpoint and lvm device on the host system for the lvremove command to work. Again, thank you so much for your help and for your work on the vserver project! Best regards, Mehdi Bennani ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] lvremove: "Can't remove open logical volume"
Hi Christian and Rik, Thank you for the "umounting in all namespaces" solution, it seems to partially solve the problem. But, for a reason I can't understand, some logical volunes still remain open even after performing vnamespace -e [xid] umount for each running context. Best regards,Mehdi 2006/9/15, Christian Affolter <[EMAIL PROTECTED]>: > > Try to unmount your volume for each active name space:> > vnamespace -e [namespace of context ] umount /your/lvm/volume >>> Thanks a lot, but my lv's are the root of each vserver so I have to stop> them before umounting, then the namespace is no longer in use and I get:> vnamespace: vc_enter_namespace(): No such process You will have to unmount the lvms in all the _remaining_ name spaces...Use vserver-stat to list all running vservers (active name spaces) andperform vnamespace -e [xid] umount for each one.___ Vserver mailing listVserver@list.linux-vserver.orghttp://list.linux-vserver.org/mailman/listinfo/vserver ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] lvremove: "Can't remove open logical volume"
Hello, thanks a lot for your answer. You can see this message posted by Daniel Hokka Zakrisson : http://archives.linux-vserver.org/200607/0139.html . His web site has this patch and some others. The debian package integrates it with others. I tried to apply the patch over 0.30.210 source and recompile, but the problem is still here. ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] lvremove: "Can't remove open logical volume"
On Fri, Sep 15, 2006 at 11:25:46AM +0200, Mehdi Bennani wrote: > Hi, > > > >Try to unmount your volume for each active name space: > >vnamespace -e [namespace of context ] umount /your/lvm/volume > > Thanks a lot, but my lv's are the root of each vserver so I have to stop > them before umounting, then the namespace is no longer in use and I get: > vnamespace: vc_enter_namespace(): No such process > > Obviously if I try it before stopping the vserver, I get: > umount: /vservers/vtest3: device is busy > probably the best way to get this right is by _not_ mounting the volume yourself, but letting the tools mount it from the fstab (in the guest configuration) HTH, Herbert > Regards, > > Mehdi > ___ > Vserver mailing list > Vserver@list.linux-vserver.org > http://list.linux-vserver.org/mailman/listinfo/vserver ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] lvremove: "Can't remove open logical volume"
On Friday 15 September 2006 11:38, Rik Bobbaers wrote: > Mehdi Bennani wrote: > > Hi, > > Thanks a lot, but my lv's are the root of each vserver so I have to stop > > them before umounting, then the namespace is no longer in use and I get: > > vnamespace: vc_enter_namespace(): No such process > > > > > > Obviously if I try it before stopping the vserver, I get: > > umount: /vservers/vtest3: device is busy > > if you stop a vserver, the namespace is gone. so that's never the > problem. but the OTHER running virtual servers still have the dir > mounted in its namespace. that's why my script loops over all the > running namespaces, and unmounts them there. [..] The first time I encountered this, it took me hours to find the trick ... To avoid this sort of problem, there's a patch against util-vserver, called "namespace cleanup". You can see this message posted by Daniel Hokka Zakrisson : http://archives.linux-vserver.org/200607/0139.html . His web site has this patch and some others. The debian package integrates it with others. Is there any plan to integrate it into the next "official" version of util-vserver ? IMHO, it would be usefull. PS : thanks to the team who took time to renew the web site ! -- Xavier Montagutelli Tel : +33 (0)5 55 45 77 20 Service Commun Informatique Fax : +33 (0)5 55 45 75 95 Universite de Limoges 123, avenue Albert Thomas 87060 Limoges cedex ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] lvremove: "Can't remove open logical volume"
Mehdi Bennani wrote: Hi, Thanks a lot, but my lv's are the root of each vserver so I have to stop them before umounting, then the namespace is no longer in use and I get: vnamespace: vc_enter_namespace(): No such process Obviously if I try it before stopping the vserver, I get: umount: /vservers/vtest3: device is busy if you stop a vserver, the namespace is gone. so that's never the problem. but the OTHER running virtual servers still have the dir mounted in its namespace. that's why my script loops over all the running namespaces, and unmounts them there. i just adapted my script to: gandalf:/var/log# cat /usr/local/bin/unmount_vserver #!/bin/sh if [ -n "$1" ] then for i in `ls -1 /proc/virtual | egrep -v 'info|status'`; do vnamespace -e $i umount $1; done umount $1 exit 0; fi exit 1; EOF if you use this, you can safely remove the logical volume without having that problem. ps. i have the same setup as you... 1 LV per vserver :) greetz -- harry aka Rik Bobbaers K.U.Leuven - LUDIT -=- Tel: +32 485 52 71 50 [EMAIL PROTECTED] -=- http://harry.ulyssis.org "Work hard and do your best, it'll make it easier for the rest" -- Garfield Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] lvremove: "Can't remove open logical volume"
> Try to unmount your volume for each active name space: > vnamespace -e [namespace of context ] umount /your/lvm/volume Thanks a lot, but my lv's are the root of each vserver so I have to stop them before umounting, then the namespace is no longer in use and I get: vnamespace: vc_enter_namespace(): No such process You will have to unmount the lvms in all the _remaining_ name spaces... Use vserver-stat to list all running vservers (active name spaces) and perform vnamespace -e [xid] umount for each one. ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] lvremove: "Can't remove open logical volume"
Hi, > Try to unmount your volume for each active name space:> vnamespace -e [namespace of context ] umount /your/lvm/volume Thanks a lot, but my lv's are the root of each vserver so I have to stop them before umounting, then the namespace is no longer in use and I get: vnamespace: vc_enter_namespace(): No such process Obviously if I try it before stopping the vserver, I get:umount: /vservers/vtest3: device is busy Regards, Mehdi ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] lvremove: "Can't remove open logical volume"
> Try to unmount your volume for each active name space: > vnamespace -e [namespace of context ] umount /your/lvm/volume i "scripted" it like this: gandalf:~# cat /usr/local/bin/unmount_vserver #!/bin/sh if [ -n "$1" ] then for i in `ls -1 /proc/virtual | egrep -v 'info|status'`; do vnamespace -e $i umount $1; done exit 0; fi exit 1; you just do unmount_vserver /vservers/bleh and it makes sure it's unmounted in all namespaces. it doesn't do much checking, but you get the picture, feel free to add more sanity/safety checks ;) greetz, -- harry aka Rik Bobbaers K.U.Leuven - LUDIT -=- Tel: +32 485 52 71 50 [EMAIL PROTECTED] -=- http://harry.ulyssis.org "Work hard and do your best, it'll make it easier for the rest" -- Garfield Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] lvremove: "Can't remove open logical volume"
Hi! I am setting up a host with LVM volumes for each vserver. I made scripts for vserver creation which include on-the-fly Logical Volume creation, formating and mount, that works pretty well. Things are getting worse when I try to delete a Logical Volume after having the vserver stopped and its partition umounted: I randomly get this error: "Can't remove open logical volume" Because it's probably still mounted in your other active namespaces... The Logical Volume seems actually umounted because cat /proc/mounts doesn't mention it, but *something* is still using it and I cannot figure out what. A reboot of the host corrects the problem but I can't reboot the whole system each time I need to delete a vserver. Try to unmount your volume for each active name space: vnamespace -e [namespace of context ] umount /your/lvm/volume Hope this helps. regards, Chris ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
