[pve-devel] vm stop tasks hanging

Fri Apr 20 12:03:43 CEST 2012

I think I found the problem:

in Qemuserver.pm : vm_stop_cleanup sub

-> PVE::Storage::deactivate_volumes($storecfg, $vollist);

sub deactivate_volumes {
    my ($cfg, $vollist) = @_;

    return if !($vollist && scalar(@$vollist));

    my $lvs = lvm_lvs ();  ------------------------------> this is called, but I don't use lvm

    my @errlist = ();
    foreach my $volid (@$vollist) {
        my ($storeid, $volname) = parse_volume_id ($volid);

        my $scfg = storage_config ($cfg, $storeid);

        if ($scfg->{type} eq 'lvm') {
            my ($name) = parse_volname_lvm ($volname);

            if ($lvs->{$scfg->{vgname}}->{$name}) {
                my $path = path ($cfg, $volid);
                my $cmd = ['/sbin/lvchange', '-aln', $path];
                eval { run_command($cmd, errmsg => "can't deactivate LV '$volid'"); };
                if (my $err = $@) {
                    warn $err;
                    push @errlist, $volid;
                }
            }
        }
    }

    die "volume deativation failed: " . join(' ', @errlist)

sub lvm_lvs {
    my ($vgname) = @_;

    my $cmd = ['/sbin/lvs', '--separator', ':', '--noheadings', '--units', 'b',
               '--unbuffered', '--nosuffix', '--options',
               'vg_name,lv_name,lv_size,uuid,tags'];

maybe adding a

return if $scfg->{type} ne 'lvm'

 at the begin of deactivate_volumes sub should help ?

----- Mail original ----- 

De: "Alexandre DERUMIER" <aderumier at odiso.com> 
À: "Stefan Priebe - Profihost AG" <s.priebe at profihost.ag> 
Cc: pve-devel at pve.proxmox.com 
Envoyé: Vendredi 20 Avril 2012 10:39:13 
Objet: Re: [pve-devel] vm stop tasks hanging 

interesting: when I stop the process, I have this error: 

command '/sbin/lvs --separator : --noheadings --units b --unbuffered --nosuffix --options vg_name,lv_name,lv_size,uuid,tags' failed: received interrupt 
root at kvm6:~# 

I'm using scsi lun directly without lvm, maybe this is the cause of the problem ? 

----- Mail original ----- 

De: "Alexandre DERUMIER" <aderumier at odiso.com> 
À: "Stefan Priebe - Profihost AG" <s.priebe at profihost.ag> 
Cc: pve-devel at pve.proxmox.com 
Envoyé: Vendredi 20 Avril 2012 10:36:37 
Objet: Re: [pve-devel] vm stop tasks hanging 

Hi, 
console or proxmox gui, same problem. 

strace : 

Process 536632 attached - interrupt to quit 
select(8, [6], NULL, NULL, {0, 602921}) = 0 (Timeout) 
open("/proc/536638/stat", O_RDONLY) = 10 
ioctl(10, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fff4daca4b0) = -1 ENOTTY (Inappropriate ioctl for device) 
lseek(10, 0, SEEK_CUR) = 0 
fstat(10, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0 
fcntl(10, F_SETFD, FD_CLOEXEC) = 0 
read(10, "536638 (qm) S 536632 536638 5366"..., 4096) = 263 
close(10) = 0 
select(8, [6], NULL, NULL, {1, 0}) = 0 (Timeout) 
open("/proc/536638/stat", O_RDONLY) = 10 
ioctl(10, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fff4daca4b0) = -1 ENOTTY (Inappropriate ioctl for device) 
lseek(10, 0, SEEK_CUR) = 0 
fstat(10, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0 
fcntl(10, F_SETFD, FD_CLOEXEC) = 0 
read(10, "536638 (qm) S 536632 536638 5366"..., 4096) = 262 
close(10) = 0 
select(8, [6], NULL, NULL, {1, 0}) = 0 (Timeout) 
open("/proc/536638/stat", O_RDONLY) = 10 
ioctl(10, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fff4daca4b0) = -1 ENOTTY (Inappropriate ioctl for device) 
lseek(10, 0, SEEK_CUR) = 0 
fstat(10, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0 
fcntl(10, F_SETFD, FD_CLOEXEC) = 0 
read(10, "536638 (qm) S 536632 536638 5366"..., 4096) = 262 
close(10) = 0 
select(8, [6], NULL, NULL, {1, 0}) = 0 (Timeout) 
open("/proc/536638/stat", O_RDONLY) = 10 
ioctl(10, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fff4daca4b0) = -1 ENOTTY (Inappropriate ioctl for device) 
lseek(10, 0, SEEK_CUR) = 0 
fstat(10, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0 
fcntl(10, F_SETFD, FD_CLOEXEC) = 0 
read(10, "536638 (qm) S 536632 536638 5366"..., 4096) = 262 
close(10) = 0 
select(8, [6], NULL, NULL, {1, 0}) = 0 (Timeout) 
open("/proc/536638/stat", O_RDONLY) = 10 
ioctl(10, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fff4daca4b0) = -1 ENOTTY (Inappropriate ioctl for device) 
lseek(10, 0, SEEK_CUR) = 0 
fstat(10, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0 
fcntl(10, F_SETFD, FD_CLOEXEC) = 0 
read(10, "536638 (qm) S 536632 536638 5366"..., 4096) = 262 
close(10) = 0 
select(8, [6], NULL, NULL, {1, 0}) = 0 (Timeout) 
open("/proc/536638/stat", O_RDONLY) = 10 
ioctl(10, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fff4daca4b0) = -1 ENOTTY (Inappropriate ioctl for device) 
lseek(10, 0, SEEK_CUR) = 0 
fstat(10, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0 
fcntl(10, F_SETFD, FD_CLOEXEC) = 0 
read(10, "536638 (qm) S 536632 536638 5366"..., 4096) = 262 
close(10) = 0 
select(8, [6], NULL, NULL, {1, 0}) = 0 (Timeout) 
open("/proc/536638/stat", O_RDONLY) = 10 
ioctl(10, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fff4daca4b0) = -1 ENOTTY (Inappropriate ioctl for device) 
lseek(10, 0, SEEK_CUR) = 0 
fstat(10, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0 
fcntl(10, F_SETFD, FD_CLOEXEC) = 0 
read(10, "536638 (qm) S 536632 536638 5366"..., 4096) = 263 
close(10) = 0 
select(8, [6], NULL, NULL, {1, 0}) = 0 (Timeout) 
open("/proc/536638/stat", O_RDONLY) = 10 
ioctl(10, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fff4daca4b0) = -1 ENOTTY (Inappropriate ioctl for device) 
lseek(10, 0, SEEK_CUR) = 0 
fstat(10, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0 
fcntl(10, F_SETFD, FD_CLOEXEC) = 0 
read(10, "536638 (qm) S 536632 536638 5366"..., 4096) = 263 
close(10) = 0 
select(8, [6], NULL, NULL, {1, 0}) = 0 (Timeout) 
open("/proc/536638/stat", O_RDONLY) = 10 
ioctl(10, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fff4daca4b0) = -1 ENOTTY (Inappropriate ioctl for device) 
lseek(10, 0, SEEK_CUR) = 0 
fstat(10, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0 
fcntl(10, F_SETFD, FD_CLOEXEC) = 0 
read(10, "536638 (qm) S 536632 536638 5366"..., 4096) = 262 
close(10) = 0 
select(8, [6], NULL, NULL, {1, 0}) = 0 (Timeout) 
open("/proc/536638/stat", O_RDONLY) = 10 
ioctl(10, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fff4daca4b0) = -1 ENOTTY (Inappropriate ioctl for device) 
lseek(10, 0, SEEK_CUR) = 0 
fstat(10, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0 
fcntl(10, F_SETFD, FD_CLOEXEC) = 0 
read(10, "536638 (qm) S 536632 536638 5366"..., 4096) = 262 
close(10) = 0 
select(8, [6], NULL, NULL, {1, 0}) = 0 (Timeout) 
open("/proc/536638/stat", O_RDONLY) = 10 
ioctl(10, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fff4daca4b0) = -1 ENOTTY (Inappropriate ioctl for device) 
lseek(10, 0, SEEK_CUR) = 0 
fstat(10, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0 
fcntl(10, F_SETFD, FD_CLOEXEC) = 0 
read(10, "536638 (qm) S 536632 536638 5366"..., 4096) = 262 
close(10) = 0 
select(8, [6], NULL, NULL, {1, 0}) = 0 (Timeout) 
open("/proc/536638/stat", O_RDONLY) = 10 
ioctl(10, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fff4daca4b0) = -1 ENOTTY (Inappropriate ioctl for device) 
lseek(10, 0, SEEK_CUR) = 0 
fstat(10, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0 
fcntl(10, F_SETFD, FD_CLOEXEC) = 0 
read(10, "536638 (qm) S 536632 536638 5366"..., 4096) = 262 
close(10) = 0 
select(8, [6], NULL, NULL, {1, 0}) = 0 (Timeout) 
open("/proc/536638/stat", O_RDONLY) = 10 
ioctl(10, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fff4daca4b0) = -1 ENOTTY (Inappropriate ioctl for device) 
lseek(10, 0, SEEK_CUR) = 0 
fstat(10, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0 
fcntl(10, F_SETFD, FD_CLOEXEC) = 0 
read(10, "536638 (qm) S 536632 536638 5366"..., 4096) = 262 
close(10) = 0 
select(8, [6], NULL, NULL, {1, 0}) = 0 (Timeout) 
open("/proc/536638/stat", O_RDONLY) = 10 
ioctl(10, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fff4daca4b0) = -1 ENOTTY (Inappropriate ioctl for device) 
lseek(10, 0, SEEK_CUR) = 0 
fstat(10, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0 
fcntl(10, F_SETFD, FD_CLOEXEC) = 0 
read(10, "536638 (qm) S 536632 536638 5366"..., 4096) = 262 
close(10) = 0 
select(8, [6], NULL, NULL, {1, 0}) = 0 (Timeout) 
open("/proc/536638/stat", O_RDONLY) = 10 
ioctl(10, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fff4daca4b0) = -1 ENOTTY (Inappropriate ioctl for device) 
lseek(10, 0, SEEK_CUR) = 0 
fstat(10, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0 
fcntl(10, F_SETFD, FD_CLOEXEC) = 0 
read(10, "536638 (qm) S 536632 536638 5366"..., 4096) = 262 
close(10) = 0 
select(8, [6], NULL, NULL, {1, 0}) = 0 (Timeout) 
open("/proc/536638/stat", O_RDONLY) = 10 
ioctl(10, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fff4daca4b0) = -1 ENOTTY (Inappropriate ioctl for device) 
lseek(10, 0, SEEK_CUR) = 0 
fstat(10, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0 
fcntl(10, F_SETFD, FD_CLOEXEC) = 0 
read(10, "536638 (qm) S 536632 536638 5366"..., 4096) = 262 
close(10) = 0 
select(8, [6], NULL, NULL, {1, 0}^C <unfinished ...> 
Process 536632 detached 

----- Mail original ----- 

De: "Stefan Priebe - Profihost AG" <s.priebe at profihost.ag> 
À: pve-devel at pve.proxmox.com 
Envoyé: Vendredi 20 Avril 2012 10:00:50 
Objet: Re: [pve-devel] vm stop tasks hanging 

Am 20.04.2012 09:58, schrieb Alexandre DERUMIER: 
> Hi Dietmar, 
> 
> I have problems with kvm stopping task, which are hanging. 
> 
> vm stop correctly (icon in tree is black), but task continue to run. (so i need to stop the task manually). 
> 
> I can reproduce it 100%. 
> 
> Do you have an idea ? 

What does an strace -f -p PID of the vm stop command say? It should do 
or wait for something. Also does it only happen via Proxmox console or 
does it also happen when starting then command via shell? 

Greets 
Stefan 
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-- 

-- 

Alexandre D erumier 
Ingénieur Système 
Fixe : 03 20 68 88 90 
Fax : 03 20 68 90 81 
45 Bvd du Général Leclerc 59100 Roubaix - France 
12 rue Marivaux 75002 Paris - France 

-- 

-- 

Alexandre D erumier 
Ingénieur Système 
Fixe : 03 20 68 88 90 
Fax : 03 20 68 90 81 
45 Bvd du Général Leclerc 59100 Roubaix - France 
12 rue Marivaux 75002 Paris - France 

_______________________________________________ 
pve-devel mailing list 
pve-devel at pve.proxmox.com 
http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel 

-- 

-- 

	Alexandre D erumier 
Ingénieur Système 
Fixe : 03 20 68 88 90 
Fax : 03 20 68 90 81 
45 Bvd du Général Leclerc 59100 Roubaix - France 
12 rue Marivaux 75002 Paris - France 