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
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 xid] 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
SOLVED ! ! ! Hi all, I just found out that vnamespace -e [namespace of context xid] 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
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 xid] 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
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 xid] 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
[Vserver] lvremove: Can't remove open logical volume
Hello, 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 Here are basic examples of the scripts: CREATIONusage:vcreate [name] #!/bin/bashlvcreate -L5000 -n$1 vg0mkreiserfs -f /dev/vg0/$1mkdir /vservers/$1mount /dev/vg0/$1 /vservers/$1vserver $1 build -m skeleton DELETIONusage:vdelete [name] #!/bin/bashvserver $1 stoplsof /vservers/$1umount -f /vservers/$1lvremove -f /dev/vg0/$1 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. I have found a log chat at http://irc.13thfloor.at/LOG/2006-04/LOG_2006-04-22.txt where someone was experiencing exaclty the same problem but no solution was found at the moment. Thanks in advance for any help or ideas! Regards, Mehdi Bennani =system info== vserver:~# vserver-infoVersions: Kernel: 2.6.12lvs VS-API: 0x00020001 util-vserver: 0.30.210; Jun 11 2006, 14:57:10 Features: CC: gcc, gcc (GCC) 3.3.5 (Debian 1:3.3.5-13) CXX: g++, g++ (GCC) 3.3.5 (Debian 1:3.3.5-13) CPPFLAGS: '' CFLAGS: '-Wall -g -O2 -std=c99 -Wall -pedantic -W' CXXFLAGS: '-g -O2 -ansi -Wall -pedantic -W -fmessage-length=0' build/host: i386-pc-linux-gnu/i386-pc-linux-gnu Use dietlibc: yes Build C++ programs: yes Build C99 programs: yes Available APIs: compat,v11,fscompat,v13,net,oldproc,olduts ext2fs Source: e2fsprogs syscall(2) invocation: alternative vserver(2) syscall#: 273/glibc Paths: prefix: /usr sysconf-Directory: /etc cfg-Directory: /etc/vservers initrd-Directory: $(sysconfdir)/init.d pkgstate-Directory: /var/run/vservers vserver-Rootdir: /var/lib/vservers ___ 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 xid] 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
Re: [Vserver] lvremove: Can't remove open logical volume
Try to unmount your volume for each active name space: vnamespace -e [namespace of context xid] 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, Try to unmount your volume for each active name space: vnamespace -e [namespace of context xid] 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 xid] 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
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
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
