[pve-devel] vm stop tasks hanging

[Dietmar Maurer]

What is the output of:

# cat /proc/536638/stat


> -----Original Message-----
> From: pve-devel-bounces at pve.proxmox.com [mailto:pve-devel-
> bounces at pve.proxmox.com] On Behalf Of Alexandre DERUMIER
> Sent: Freitag, 20. April 2012 10:39
> To: Stefan Priebe - Profihost AG
> Cc: pve-devel at pve.proxmox.com
> Subject: 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
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