[Qemu-devel] [Bug 543478] Re: qemus pmemsave doesn't accept "/" in filename

[Qemu-devel] [Bug 543478] Re: qemus pmemsave doesn't accept "/" in filename

[Serge Hallyn]

Note that putting quotes around the filename lets you use '/'.  I.e.
pmemsave 0x200 0x200 "/tmp/abab"

I assume this is a shortcoming in the parser, as the source code at first glance
claims to simply read a string.  So I'm not sure how easily fixable it would be,
but it appears to be something for upstream to consider (whether to fix needing
to quote a filename, or add more precise help on error).

** Also affects: qemu
   Importance: Undecided
       Status: New

-- 
qemus pmemsave doesn't accept "/" in filename
https://bugs.launchpad.net/bugs/543478
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.

Status in QEMU: New
Status in “qemu-kvm” package in Ubuntu: New

Bug description:
Binary package hint: qemu-kvm

Please see my conversation with qemu:

(qemu) pmemsave 
unexpected end of expression
(qemu) help pmemsave 
pmemsave addr size file -- save to disk physical memory dump starting at 'addr' of size 'size'
(qemu) pmemsave 0 512M /tmp/qemu.mem
pmemsave: extraneous characters at the end of line
(qemu) pmemsave 0 512 /tmp/qemu.mem
invalid char in expression
(qemu) pmemsave 0 512 /tmp/qemu
invalid char in expression
(qemu) pmemsave 0 512 qemu.mem
(qemu) pmemsave 0 512M qemu.mem
pmemsave: extraneous characters at the end of line



Let me comment on each one of those:
(qemu) pmemsave 
unexpected end of expression

I expected some sort of hint as to where to get more information. Maybe just a "Type ``help pmemsave'' to get syntax information" would be sufficient.


(qemu) help pmemsave 
pmemsave addr size file -- save to disk physical memory dump starting at 'addr' of size 'size'

Nice. But an example would be nice. My proposal: "I.e.: pmemsave 0 1G /tmp/qemu.mem"


(qemu) pmemsave 0 512M /tmp/qemu.mem
pmemsave: extraneous characters at the end of line

eh. Would be nice if it told me *which* character was "extraneous" and what "extraneous" means. My proposal: "Couldn't parse character at position 23, please see help pmemsave for an example".


(qemu) pmemsave 0 512 /tmp/qemu.mem
invalid char in expression

Hm. Interesting. Again, would be nice if it printed me the offending character. My proposal: "Could not parse character at position 23, please see help pmemsave for an example".


(qemu) pmemsave 0 512 /tmp/qemu
invalid char in expression

Now I got rid of almost everything but it still doesn't work.


(qemu) pmemsave 0 512 qemu.mem

aha! No slashes?! Seriously?

(qemu) pmemsave 0 512M qemu.mem
pmemsave: extraneous characters at the end of line

And no "M" or "G" modifiers? If I want to dump 2GB then I'd have to calculate the number in bytes and paste that long string. I expected qemu to be able to parse the K, M, G suffixes.

Also, I'm wondering why it doesn't offer to dump all memory.

ProblemType: Bug
Architecture: amd64
CurrentDmesg:
 [150870.676062] kvm_intel: Unknown symbol kvm_vcpu_on_spin
 [150947.222923] cron[24260]: segfault at 0 ip (null) sp 00007fffe865eed8 error 14 in cron[400000+9000]
 [150947.224187] cron[24261]: segfault at 0 ip (null) sp 00007fffe865eed8 error 14 in cron[400000+9000]
Date: Sun Mar 21 15:03:13 2010
DistroRelease: Ubuntu 9.10
KvmCmdLine:
 UID        PID  PPID  C    SZ   RSS PSR STIME TTY          TIME CMD
 muelli   23807 23806 13 239738 228464 0 14:54 pts/8    00:01:22 /usr/bin/kvm -S -M pc -m 512 -smp 1 -name vanilla_ubuntu -monitor stdio -boot c -drive file=/home/muelli/qemu/ubuntu8.10/ubuntu.img,if=ide,index=0,boot=on -drive file=,if=ide,media=cdrom,index=2 -net nic,model=rtl8139,macaddr=f0:00:BA:12:34:56 -net user,hostfwd=tcp::2223-:22,smb=/tmp/share -serial pty -snapshot
MachineType: LENOVO 766636G
Package: kvm 1:84+dfsg-0ubuntu16+0.11.0+0ubuntu6.3
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: root=/dev/mapper/cryptroot source=UUID=9c3d5596-27c6-4fd5-bfcd-fa8eef6f1230 ro vdso32=0 quiet splash  crashkernel=384M-2G:64M,2G-:128M
ProcVersionSignature: Ubuntu 2.6.32-16.24-generic
SourcePackage: qemu-kvm
Uname: Linux 2.6.32-16-generic x86_64
dmi.bios.date: 03/12/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 7NETC0WW (2.20 )
dmi.board.name: 766636G
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7NETC0WW(2.20):bd03/12/2009:svnLENOVO:pn766636G:pvrThinkPadX61:rvnLENOVO:rn766636G:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 766636G
dmi.product.version: ThinkPad X61
dmi.sys.vendor: LENOVO

[Qemu-devel] [Bug 543478] Re: qemus pmemsave doesn't accept "/" in filename

[Anthony Liguori]

The '/' character is used to create special expressions if double quotes
aren't used.

** Changed in: qemu
       Status: New => Invalid

-- 
qemus pmemsave doesn't accept "/" in filename
https://bugs.launchpad.net/bugs/543478
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.

Status in QEMU: Invalid
Status in “qemu-kvm” package in Ubuntu: New

Bug description:
Binary package hint: qemu-kvm

Please see my conversation with qemu:

(qemu) pmemsave 
unexpected end of expression
(qemu) help pmemsave 
pmemsave addr size file -- save to disk physical memory dump starting at 'addr' of size 'size'
(qemu) pmemsave 0 512M /tmp/qemu.mem
pmemsave: extraneous characters at the end of line
(qemu) pmemsave 0 512 /tmp/qemu.mem
invalid char in expression
(qemu) pmemsave 0 512 /tmp/qemu
invalid char in expression
(qemu) pmemsave 0 512 qemu.mem
(qemu) pmemsave 0 512M qemu.mem
pmemsave: extraneous characters at the end of line



Let me comment on each one of those:
(qemu) pmemsave 
unexpected end of expression

I expected some sort of hint as to where to get more information. Maybe just a "Type ``help pmemsave'' to get syntax information" would be sufficient.


(qemu) help pmemsave 
pmemsave addr size file -- save to disk physical memory dump starting at 'addr' of size 'size'

Nice. But an example would be nice. My proposal: "I.e.: pmemsave 0 1G /tmp/qemu.mem"


(qemu) pmemsave 0 512M /tmp/qemu.mem
pmemsave: extraneous characters at the end of line

eh. Would be nice if it told me *which* character was "extraneous" and what "extraneous" means. My proposal: "Couldn't parse character at position 23, please see help pmemsave for an example".


(qemu) pmemsave 0 512 /tmp/qemu.mem
invalid char in expression

Hm. Interesting. Again, would be nice if it printed me the offending character. My proposal: "Could not parse character at position 23, please see help pmemsave for an example".


(qemu) pmemsave 0 512 /tmp/qemu
invalid char in expression

Now I got rid of almost everything but it still doesn't work.


(qemu) pmemsave 0 512 qemu.mem

aha! No slashes?! Seriously?

(qemu) pmemsave 0 512M qemu.mem
pmemsave: extraneous characters at the end of line

And no "M" or "G" modifiers? If I want to dump 2GB then I'd have to calculate the number in bytes and paste that long string. I expected qemu to be able to parse the K, M, G suffixes.

Also, I'm wondering why it doesn't offer to dump all memory.

ProblemType: Bug
Architecture: amd64
CurrentDmesg:
 [150870.676062] kvm_intel: Unknown symbol kvm_vcpu_on_spin
 [150947.222923] cron[24260]: segfault at 0 ip (null) sp 00007fffe865eed8 error 14 in cron[400000+9000]
 [150947.224187] cron[24261]: segfault at 0 ip (null) sp 00007fffe865eed8 error 14 in cron[400000+9000]
Date: Sun Mar 21 15:03:13 2010
DistroRelease: Ubuntu 9.10
KvmCmdLine:
 UID        PID  PPID  C    SZ   RSS PSR STIME TTY          TIME CMD
 muelli   23807 23806 13 239738 228464 0 14:54 pts/8    00:01:22 /usr/bin/kvm -S -M pc -m 512 -smp 1 -name vanilla_ubuntu -monitor stdio -boot c -drive file=/home/muelli/qemu/ubuntu8.10/ubuntu.img,if=ide,index=0,boot=on -drive file=,if=ide,media=cdrom,index=2 -net nic,model=rtl8139,macaddr=f0:00:BA:12:34:56 -net user,hostfwd=tcp::2223-:22,smb=/tmp/share -serial pty -snapshot
MachineType: LENOVO 766636G
Package: kvm 1:84+dfsg-0ubuntu16+0.11.0+0ubuntu6.3
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: root=/dev/mapper/cryptroot source=UUID=9c3d5596-27c6-4fd5-bfcd-fa8eef6f1230 ro vdso32=0 quiet splash  crashkernel=384M-2G:64M,2G-:128M
ProcVersionSignature: Ubuntu 2.6.32-16.24-generic
SourcePackage: qemu-kvm
Uname: Linux 2.6.32-16-generic x86_64
dmi.bios.date: 03/12/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 7NETC0WW (2.20 )
dmi.board.name: 766636G
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7NETC0WW(2.20):bd03/12/2009:svnLENOVO:pn766636G:pvrThinkPadX61:rvnLENOVO:rn766636G:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 766636G
dmi.product.version: ThinkPad X61
dmi.sys.vendor: LENOVO

Re: [Qemu-devel] [Bug 543478] Re: qemus pmemsave doesn't accept "/" in filename

[Serge E. Hallyn]

Thanks, Anthony.  Do I understand correctly that that's the
"case '/'" in monitor_parse_command() for '/10x' gdb-like format?

thanks,
-serge

Quoting Anthony Liguori (anthony@codemonkey.ws):
> The '/' character is used to create special expressions if double quotes
> aren't used.
> 
> ** Changed in: qemu
>        Status: New => Invalid
> 
> -- 
> qemus pmemsave doesn't accept "/" in filename
> https://bugs.launchpad.net/bugs/543478
> You received this bug notification because you are a member of qemu-
> devel-ml, which is subscribed to QEMU.
> 
> Status in QEMU: Invalid
> Status in ???qemu-kvm??? package in Ubuntu: New
> 
> Bug description:
> Binary package hint: qemu-kvm
> 
> Please see my conversation with qemu:
> 
> (qemu) pmemsave 
> unexpected end of expression
> (qemu) help pmemsave 
> pmemsave addr size file -- save to disk physical memory dump starting at 'addr' of size 'size'
> (qemu) pmemsave 0 512M /tmp/qemu.mem
> pmemsave: extraneous characters at the end of line
> (qemu) pmemsave 0 512 /tmp/qemu.mem
> invalid char in expression
> (qemu) pmemsave 0 512 /tmp/qemu
> invalid char in expression
> (qemu) pmemsave 0 512 qemu.mem
> (qemu) pmemsave 0 512M qemu.mem
> pmemsave: extraneous characters at the end of line
> 
> 
> 
> Let me comment on each one of those:
> (qemu) pmemsave 
> unexpected end of expression
> 
> I expected some sort of hint as to where to get more information. Maybe just a "Type ``help pmemsave'' to get syntax information" would be sufficient.
> 
> 
> (qemu) help pmemsave 
> pmemsave addr size file -- save to disk physical memory dump starting at 'addr' of size 'size'
> 
> Nice. But an example would be nice. My proposal: "I.e.: pmemsave 0 1G /tmp/qemu.mem"
> 
> 
> (qemu) pmemsave 0 512M /tmp/qemu.mem
> pmemsave: extraneous characters at the end of line
> 
> eh. Would be nice if it told me *which* character was "extraneous" and what "extraneous" means. My proposal: "Couldn't parse character at position 23, please see help pmemsave for an example".
> 
> 
> (qemu) pmemsave 0 512 /tmp/qemu.mem
> invalid char in expression
> 
> Hm. Interesting. Again, would be nice if it printed me the offending character. My proposal: "Could not parse character at position 23, please see help pmemsave for an example".
> 
> 
> (qemu) pmemsave 0 512 /tmp/qemu
> invalid char in expression
> 
> Now I got rid of almost everything but it still doesn't work.
> 
> 
> (qemu) pmemsave 0 512 qemu.mem
> 
> aha! No slashes?! Seriously?
> 
> (qemu) pmemsave 0 512M qemu.mem
> pmemsave: extraneous characters at the end of line
> 
> And no "M" or "G" modifiers? If I want to dump 2GB then I'd have to calculate the number in bytes and paste that long string. I expected qemu to be able to parse the K, M, G suffixes.
> 
> Also, I'm wondering why it doesn't offer to dump all memory.
> 
> ProblemType: Bug
> Architecture: amd64
> CurrentDmesg:
>  [150870.676062] kvm_intel: Unknown symbol kvm_vcpu_on_spin
>  [150947.222923] cron[24260]: segfault at 0 ip (null) sp 00007fffe865eed8 error 14 in cron[400000+9000]
>  [150947.224187] cron[24261]: segfault at 0 ip (null) sp 00007fffe865eed8 error 14 in cron[400000+9000]
> Date: Sun Mar 21 15:03:13 2010
> DistroRelease: Ubuntu 9.10
> KvmCmdLine:
>  UID        PID  PPID  C    SZ   RSS PSR STIME TTY          TIME CMD
>  muelli   23807 23806 13 239738 228464 0 14:54 pts/8    00:01:22 /usr/bin/kvm -S -M pc -m 512 -smp 1 -name vanilla_ubuntu -monitor stdio -boot c -drive file=/home/muelli/qemu/ubuntu8.10/ubuntu.img,if=ide,index=0,boot=on -drive file=,if=ide,media=cdrom,index=2 -net nic,model=rtl8139,macaddr=f0:00:BA:12:34:56 -net user,hostfwd=tcp::2223-:22,smb=/tmp/share -serial pty -snapshot
> MachineType: LENOVO 766636G
> Package: kvm 1:84+dfsg-0ubuntu16+0.11.0+0ubuntu6.3
> PccardctlIdent:
>  Socket 0:
>    no product info available
> PccardctlStatus:
>  Socket 0:
>    no card
> ProcCmdLine: root=/dev/mapper/cryptroot source=UUID=9c3d5596-27c6-4fd5-bfcd-fa8eef6f1230 ro vdso32=0 quiet splash  crashkernel=384M-2G:64M,2G-:128M
> ProcVersionSignature: Ubuntu 2.6.32-16.24-generic
> SourcePackage: qemu-kvm
> Uname: Linux 2.6.32-16-generic x86_64
> dmi.bios.date: 03/12/2009
> dmi.bios.vendor: LENOVO
> dmi.bios.version: 7NETC0WW (2.20 )
> dmi.board.name: 766636G
> dmi.board.vendor: LENOVO
> dmi.board.version: Not Available
> dmi.chassis.asset.tag: No Asset Information
> dmi.chassis.type: 10
> dmi.chassis.vendor: LENOVO
> dmi.chassis.version: Not Available
> dmi.modalias: dmi:bvnLENOVO:bvr7NETC0WW(2.20):bd03/12/2009:svnLENOVO:pn766636G:pvrThinkPadX61:rvnLENOVO:rn766636G:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
> dmi.product.name: 766636G
> dmi.product.version: ThinkPad X61
> dmi.sys.vendor: LENOVO
> 
> 

[Qemu-devel] [Bug 543478] Re: qemus pmemsave doesn't accept "/" in filename

[Serge Hallyn]

** Changed in: qemu-kvm (Ubuntu)
       Status: New => Invalid

-- 
qemus pmemsave doesn't accept "/" in filename
https://bugs.launchpad.net/bugs/543478
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.

Status in QEMU: Invalid
Status in “qemu-kvm” package in Ubuntu: Invalid

Bug description:
Binary package hint: qemu-kvm

Please see my conversation with qemu:

(qemu) pmemsave 
unexpected end of expression
(qemu) help pmemsave 
pmemsave addr size file -- save to disk physical memory dump starting at 'addr' of size 'size'
(qemu) pmemsave 0 512M /tmp/qemu.mem
pmemsave: extraneous characters at the end of line
(qemu) pmemsave 0 512 /tmp/qemu.mem
invalid char in expression
(qemu) pmemsave 0 512 /tmp/qemu
invalid char in expression
(qemu) pmemsave 0 512 qemu.mem
(qemu) pmemsave 0 512M qemu.mem
pmemsave: extraneous characters at the end of line



Let me comment on each one of those:
(qemu) pmemsave 
unexpected end of expression

I expected some sort of hint as to where to get more information. Maybe just a "Type ``help pmemsave'' to get syntax information" would be sufficient.


(qemu) help pmemsave 
pmemsave addr size file -- save to disk physical memory dump starting at 'addr' of size 'size'

Nice. But an example would be nice. My proposal: "I.e.: pmemsave 0 1G /tmp/qemu.mem"


(qemu) pmemsave 0 512M /tmp/qemu.mem
pmemsave: extraneous characters at the end of line

eh. Would be nice if it told me *which* character was "extraneous" and what "extraneous" means. My proposal: "Couldn't parse character at position 23, please see help pmemsave for an example".


(qemu) pmemsave 0 512 /tmp/qemu.mem
invalid char in expression

Hm. Interesting. Again, would be nice if it printed me the offending character. My proposal: "Could not parse character at position 23, please see help pmemsave for an example".


(qemu) pmemsave 0 512 /tmp/qemu
invalid char in expression

Now I got rid of almost everything but it still doesn't work.


(qemu) pmemsave 0 512 qemu.mem

aha! No slashes?! Seriously?

(qemu) pmemsave 0 512M qemu.mem
pmemsave: extraneous characters at the end of line

And no "M" or "G" modifiers? If I want to dump 2GB then I'd have to calculate the number in bytes and paste that long string. I expected qemu to be able to parse the K, M, G suffixes.

Also, I'm wondering why it doesn't offer to dump all memory.

ProblemType: Bug
Architecture: amd64
CurrentDmesg:
 [150870.676062] kvm_intel: Unknown symbol kvm_vcpu_on_spin
 [150947.222923] cron[24260]: segfault at 0 ip (null) sp 00007fffe865eed8 error 14 in cron[400000+9000]
 [150947.224187] cron[24261]: segfault at 0 ip (null) sp 00007fffe865eed8 error 14 in cron[400000+9000]
Date: Sun Mar 21 15:03:13 2010
DistroRelease: Ubuntu 9.10
KvmCmdLine:
 UID        PID  PPID  C    SZ   RSS PSR STIME TTY          TIME CMD
 muelli   23807 23806 13 239738 228464 0 14:54 pts/8    00:01:22 /usr/bin/kvm -S -M pc -m 512 -smp 1 -name vanilla_ubuntu -monitor stdio -boot c -drive file=/home/muelli/qemu/ubuntu8.10/ubuntu.img,if=ide,index=0,boot=on -drive file=,if=ide,media=cdrom,index=2 -net nic,model=rtl8139,macaddr=f0:00:BA:12:34:56 -net user,hostfwd=tcp::2223-:22,smb=/tmp/share -serial pty -snapshot
MachineType: LENOVO 766636G
Package: kvm 1:84+dfsg-0ubuntu16+0.11.0+0ubuntu6.3
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: root=/dev/mapper/cryptroot source=UUID=9c3d5596-27c6-4fd5-bfcd-fa8eef6f1230 ro vdso32=0 quiet splash  crashkernel=384M-2G:64M,2G-:128M
ProcVersionSignature: Ubuntu 2.6.32-16.24-generic
SourcePackage: qemu-kvm
Uname: Linux 2.6.32-16-generic x86_64
dmi.bios.date: 03/12/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 7NETC0WW (2.20 )
dmi.board.name: 766636G
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7NETC0WW(2.20):bd03/12/2009:svnLENOVO:pn766636G:pvrThinkPadX61:rvnLENOVO:rn766636G:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 766636G
dmi.product.version: ThinkPad X61
dmi.sys.vendor: LENOVO

[Qemu-devel] [Bug 543478] Re: qemus pmemsave doesn't accept "/" in filename

[Muelli]

Eh. Well. I'm a bit surprised that you won't allow forward slashes if
you try to parse a path. It's actually a quite common character in the
Linux world. Even other Unixes use it for separating components of a
path. And since people use it so much, it should be as easy as possible
to actually give a path to qemu. The excuse that it "is used to create
special expressions" (which, btw?!) doesn't hold. I'm pretty confident
that people use the '/' character to separate components of a path
rather than doing "special expressions". Especially when a path the a
file is expected! So if there are still "special expressions" needed in
a path, it'd be better to select a different character.

Even if you don't agree on that, I really believe the user deserves some
explanation along with the error message that is printed as I've pointed
out in comment #0.

** Changed in: qemu-kvm (Ubuntu)
       Status: Invalid => New

-- 
qemus pmemsave doesn't accept "/" in filename
https://bugs.launchpad.net/bugs/543478
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.

Status in QEMU: Invalid
Status in “qemu-kvm” package in Ubuntu: New

Bug description:
Binary package hint: qemu-kvm

Please see my conversation with qemu:

(qemu) pmemsave 
unexpected end of expression
(qemu) help pmemsave 
pmemsave addr size file -- save to disk physical memory dump starting at 'addr' of size 'size'
(qemu) pmemsave 0 512M /tmp/qemu.mem
pmemsave: extraneous characters at the end of line
(qemu) pmemsave 0 512 /tmp/qemu.mem
invalid char in expression
(qemu) pmemsave 0 512 /tmp/qemu
invalid char in expression
(qemu) pmemsave 0 512 qemu.mem
(qemu) pmemsave 0 512M qemu.mem
pmemsave: extraneous characters at the end of line



Let me comment on each one of those:
(qemu) pmemsave 
unexpected end of expression

I expected some sort of hint as to where to get more information. Maybe just a "Type ``help pmemsave'' to get syntax information" would be sufficient.


(qemu) help pmemsave 
pmemsave addr size file -- save to disk physical memory dump starting at 'addr' of size 'size'

Nice. But an example would be nice. My proposal: "I.e.: pmemsave 0 1G /tmp/qemu.mem"


(qemu) pmemsave 0 512M /tmp/qemu.mem
pmemsave: extraneous characters at the end of line

eh. Would be nice if it told me *which* character was "extraneous" and what "extraneous" means. My proposal: "Couldn't parse character at position 23, please see help pmemsave for an example".


(qemu) pmemsave 0 512 /tmp/qemu.mem
invalid char in expression

Hm. Interesting. Again, would be nice if it printed me the offending character. My proposal: "Could not parse character at position 23, please see help pmemsave for an example".


(qemu) pmemsave 0 512 /tmp/qemu
invalid char in expression

Now I got rid of almost everything but it still doesn't work.


(qemu) pmemsave 0 512 qemu.mem

aha! No slashes?! Seriously?

(qemu) pmemsave 0 512M qemu.mem
pmemsave: extraneous characters at the end of line

And no "M" or "G" modifiers? If I want to dump 2GB then I'd have to calculate the number in bytes and paste that long string. I expected qemu to be able to parse the K, M, G suffixes.

Also, I'm wondering why it doesn't offer to dump all memory.

ProblemType: Bug
Architecture: amd64
CurrentDmesg:
 [150870.676062] kvm_intel: Unknown symbol kvm_vcpu_on_spin
 [150947.222923] cron[24260]: segfault at 0 ip (null) sp 00007fffe865eed8 error 14 in cron[400000+9000]
 [150947.224187] cron[24261]: segfault at 0 ip (null) sp 00007fffe865eed8 error 14 in cron[400000+9000]
Date: Sun Mar 21 15:03:13 2010
DistroRelease: Ubuntu 9.10
KvmCmdLine:
 UID        PID  PPID  C    SZ   RSS PSR STIME TTY          TIME CMD
 muelli   23807 23806 13 239738 228464 0 14:54 pts/8    00:01:22 /usr/bin/kvm -S -M pc -m 512 -smp 1 -name vanilla_ubuntu -monitor stdio -boot c -drive file=/home/muelli/qemu/ubuntu8.10/ubuntu.img,if=ide,index=0,boot=on -drive file=,if=ide,media=cdrom,index=2 -net nic,model=rtl8139,macaddr=f0:00:BA:12:34:56 -net user,hostfwd=tcp::2223-:22,smb=/tmp/share -serial pty -snapshot
MachineType: LENOVO 766636G
Package: kvm 1:84+dfsg-0ubuntu16+0.11.0+0ubuntu6.3
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: root=/dev/mapper/cryptroot source=UUID=9c3d5596-27c6-4fd5-bfcd-fa8eef6f1230 ro vdso32=0 quiet splash  crashkernel=384M-2G:64M,2G-:128M
ProcVersionSignature: Ubuntu 2.6.32-16.24-generic
SourcePackage: qemu-kvm
Uname: Linux 2.6.32-16-generic x86_64
dmi.bios.date: 03/12/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 7NETC0WW (2.20 )
dmi.board.name: 766636G
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7NETC0WW(2.20):bd03/12/2009:svnLENOVO:pn766636G:pvrThinkPadX61:rvnLENOVO:rn766636G:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 766636G
dmi.product.version: ThinkPad X61
dmi.sys.vendor: LENOVO

[Qemu-devel] [Bug 543478] Re: qemus pmemsave doesn't accept "/" in filename

[Serge Hallyn]

Muelli:  I agree that a help message about quoting pathnames would be
useful.  Please work with the upstream mailing list to do so.  A small
patch to qemu-monitor.hx should suffice, but you'll need to interact with
the qemu-devel@nongnu.org mailing list.

** Changed in: qemu-kvm (Ubuntu)
       Status: New => Incomplete

-- 
qemus pmemsave doesn't accept "/" in filename
https://bugs.launchpad.net/bugs/543478
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.

Status in QEMU: Invalid
Status in “qemu-kvm” package in Ubuntu: Incomplete

Bug description:
Binary package hint: qemu-kvm

Please see my conversation with qemu:

(qemu) pmemsave 
unexpected end of expression
(qemu) help pmemsave 
pmemsave addr size file -- save to disk physical memory dump starting at 'addr' of size 'size'
(qemu) pmemsave 0 512M /tmp/qemu.mem
pmemsave: extraneous characters at the end of line
(qemu) pmemsave 0 512 /tmp/qemu.mem
invalid char in expression
(qemu) pmemsave 0 512 /tmp/qemu
invalid char in expression
(qemu) pmemsave 0 512 qemu.mem
(qemu) pmemsave 0 512M qemu.mem
pmemsave: extraneous characters at the end of line



Let me comment on each one of those:
(qemu) pmemsave 
unexpected end of expression

I expected some sort of hint as to where to get more information. Maybe just a "Type ``help pmemsave'' to get syntax information" would be sufficient.


(qemu) help pmemsave 
pmemsave addr size file -- save to disk physical memory dump starting at 'addr' of size 'size'

Nice. But an example would be nice. My proposal: "I.e.: pmemsave 0 1G /tmp/qemu.mem"


(qemu) pmemsave 0 512M /tmp/qemu.mem
pmemsave: extraneous characters at the end of line

eh. Would be nice if it told me *which* character was "extraneous" and what "extraneous" means. My proposal: "Couldn't parse character at position 23, please see help pmemsave for an example".


(qemu) pmemsave 0 512 /tmp/qemu.mem
invalid char in expression

Hm. Interesting. Again, would be nice if it printed me the offending character. My proposal: "Could not parse character at position 23, please see help pmemsave for an example".


(qemu) pmemsave 0 512 /tmp/qemu
invalid char in expression

Now I got rid of almost everything but it still doesn't work.


(qemu) pmemsave 0 512 qemu.mem

aha! No slashes?! Seriously?

(qemu) pmemsave 0 512M qemu.mem
pmemsave: extraneous characters at the end of line

And no "M" or "G" modifiers? If I want to dump 2GB then I'd have to calculate the number in bytes and paste that long string. I expected qemu to be able to parse the K, M, G suffixes.

Also, I'm wondering why it doesn't offer to dump all memory.

ProblemType: Bug
Architecture: amd64
CurrentDmesg:
 [150870.676062] kvm_intel: Unknown symbol kvm_vcpu_on_spin
 [150947.222923] cron[24260]: segfault at 0 ip (null) sp 00007fffe865eed8 error 14 in cron[400000+9000]
 [150947.224187] cron[24261]: segfault at 0 ip (null) sp 00007fffe865eed8 error 14 in cron[400000+9000]
Date: Sun Mar 21 15:03:13 2010
DistroRelease: Ubuntu 9.10
KvmCmdLine:
 UID        PID  PPID  C    SZ   RSS PSR STIME TTY          TIME CMD
 muelli   23807 23806 13 239738 228464 0 14:54 pts/8    00:01:22 /usr/bin/kvm -S -M pc -m 512 -smp 1 -name vanilla_ubuntu -monitor stdio -boot c -drive file=/home/muelli/qemu/ubuntu8.10/ubuntu.img,if=ide,index=0,boot=on -drive file=,if=ide,media=cdrom,index=2 -net nic,model=rtl8139,macaddr=f0:00:BA:12:34:56 -net user,hostfwd=tcp::2223-:22,smb=/tmp/share -serial pty -snapshot
MachineType: LENOVO 766636G
Package: kvm 1:84+dfsg-0ubuntu16+0.11.0+0ubuntu6.3
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: root=/dev/mapper/cryptroot source=UUID=9c3d5596-27c6-4fd5-bfcd-fa8eef6f1230 ro vdso32=0 quiet splash  crashkernel=384M-2G:64M,2G-:128M
ProcVersionSignature: Ubuntu 2.6.32-16.24-generic
SourcePackage: qemu-kvm
Uname: Linux 2.6.32-16-generic x86_64
dmi.bios.date: 03/12/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 7NETC0WW (2.20 )
dmi.board.name: 766636G
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7NETC0WW(2.20):bd03/12/2009:svnLENOVO:pn766636G:pvrThinkPadX61:rvnLENOVO:rn766636G:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 766636G
dmi.product.version: ThinkPad X61
dmi.sys.vendor: LENOVO

[Qemu-devel] [Bug 543478] Re: qemus pmemsave doesn't accept "/" in filename

[Muelli]

Here's a patch against qemu from git that prints the offending
characters, helping the user to understand what's going on.

I can't deal with qemu-devel myself, it's way too noisy. But Ubuntu
might want to take that patch or push it upstream.

** Patch added: "Patch which prints the errorneous characters"
   http://launchpadlibrarian.net/51467852/0001-Monitor-Print-the-errorneous-character-if-we-detecte.patch

-- 
qemus pmemsave doesn't accept "/" in filename
https://bugs.launchpad.net/bugs/543478
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.

Status in QEMU: Invalid
Status in “qemu-kvm” package in Ubuntu: Incomplete

Bug description:
Binary package hint: qemu-kvm

Please see my conversation with qemu:

(qemu) pmemsave 
unexpected end of expression
(qemu) help pmemsave 
pmemsave addr size file -- save to disk physical memory dump starting at 'addr' of size 'size'
(qemu) pmemsave 0 512M /tmp/qemu.mem
pmemsave: extraneous characters at the end of line
(qemu) pmemsave 0 512 /tmp/qemu.mem
invalid char in expression
(qemu) pmemsave 0 512 /tmp/qemu
invalid char in expression
(qemu) pmemsave 0 512 qemu.mem
(qemu) pmemsave 0 512M qemu.mem
pmemsave: extraneous characters at the end of line



Let me comment on each one of those:
(qemu) pmemsave 
unexpected end of expression

I expected some sort of hint as to where to get more information. Maybe just a "Type ``help pmemsave'' to get syntax information" would be sufficient.


(qemu) help pmemsave 
pmemsave addr size file -- save to disk physical memory dump starting at 'addr' of size 'size'

Nice. But an example would be nice. My proposal: "I.e.: pmemsave 0 1G /tmp/qemu.mem"


(qemu) pmemsave 0 512M /tmp/qemu.mem
pmemsave: extraneous characters at the end of line

eh. Would be nice if it told me *which* character was "extraneous" and what "extraneous" means. My proposal: "Couldn't parse character at position 23, please see help pmemsave for an example".


(qemu) pmemsave 0 512 /tmp/qemu.mem
invalid char in expression

Hm. Interesting. Again, would be nice if it printed me the offending character. My proposal: "Could not parse character at position 23, please see help pmemsave for an example".


(qemu) pmemsave 0 512 /tmp/qemu
invalid char in expression

Now I got rid of almost everything but it still doesn't work.


(qemu) pmemsave 0 512 qemu.mem

aha! No slashes?! Seriously?

(qemu) pmemsave 0 512M qemu.mem
pmemsave: extraneous characters at the end of line

And no "M" or "G" modifiers? If I want to dump 2GB then I'd have to calculate the number in bytes and paste that long string. I expected qemu to be able to parse the K, M, G suffixes.

Also, I'm wondering why it doesn't offer to dump all memory.

ProblemType: Bug
Architecture: amd64
CurrentDmesg:
 [150870.676062] kvm_intel: Unknown symbol kvm_vcpu_on_spin
 [150947.222923] cron[24260]: segfault at 0 ip (null) sp 00007fffe865eed8 error 14 in cron[400000+9000]
 [150947.224187] cron[24261]: segfault at 0 ip (null) sp 00007fffe865eed8 error 14 in cron[400000+9000]
Date: Sun Mar 21 15:03:13 2010
DistroRelease: Ubuntu 9.10
KvmCmdLine:
 UID        PID  PPID  C    SZ   RSS PSR STIME TTY          TIME CMD
 muelli   23807 23806 13 239738 228464 0 14:54 pts/8    00:01:22 /usr/bin/kvm -S -M pc -m 512 -smp 1 -name vanilla_ubuntu -monitor stdio -boot c -drive file=/home/muelli/qemu/ubuntu8.10/ubuntu.img,if=ide,index=0,boot=on -drive file=,if=ide,media=cdrom,index=2 -net nic,model=rtl8139,macaddr=f0:00:BA:12:34:56 -net user,hostfwd=tcp::2223-:22,smb=/tmp/share -serial pty -snapshot
MachineType: LENOVO 766636G
Package: kvm 1:84+dfsg-0ubuntu16+0.11.0+0ubuntu6.3
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: root=/dev/mapper/cryptroot source=UUID=9c3d5596-27c6-4fd5-bfcd-fa8eef6f1230 ro vdso32=0 quiet splash  crashkernel=384M-2G:64M,2G-:128M
ProcVersionSignature: Ubuntu 2.6.32-16.24-generic
SourcePackage: qemu-kvm
Uname: Linux 2.6.32-16-generic x86_64
dmi.bios.date: 03/12/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 7NETC0WW (2.20 )
dmi.board.name: 766636G
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7NETC0WW(2.20):bd03/12/2009:svnLENOVO:pn766636G:pvrThinkPadX61:rvnLENOVO:rn766636G:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 766636G
dmi.product.version: ThinkPad X61
dmi.sys.vendor: LENOVO

[Qemu-devel] [Bug 543478] Re: qemus pmemsave doesn't accept "/" in filename

[Brian Murray]

** Tags added: patch

-- 
qemus pmemsave doesn't accept "/" in filename
https://bugs.launchpad.net/bugs/543478
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.

Status in QEMU: Invalid
Status in “qemu-kvm” package in Ubuntu: Incomplete

Bug description:
Binary package hint: qemu-kvm

Please see my conversation with qemu:

(qemu) pmemsave 
unexpected end of expression
(qemu) help pmemsave 
pmemsave addr size file -- save to disk physical memory dump starting at 'addr' of size 'size'
(qemu) pmemsave 0 512M /tmp/qemu.mem
pmemsave: extraneous characters at the end of line
(qemu) pmemsave 0 512 /tmp/qemu.mem
invalid char in expression
(qemu) pmemsave 0 512 /tmp/qemu
invalid char in expression
(qemu) pmemsave 0 512 qemu.mem
(qemu) pmemsave 0 512M qemu.mem
pmemsave: extraneous characters at the end of line



Let me comment on each one of those:
(qemu) pmemsave 
unexpected end of expression

I expected some sort of hint as to where to get more information. Maybe just a "Type ``help pmemsave'' to get syntax information" would be sufficient.


(qemu) help pmemsave 
pmemsave addr size file -- save to disk physical memory dump starting at 'addr' of size 'size'

Nice. But an example would be nice. My proposal: "I.e.: pmemsave 0 1G /tmp/qemu.mem"


(qemu) pmemsave 0 512M /tmp/qemu.mem
pmemsave: extraneous characters at the end of line

eh. Would be nice if it told me *which* character was "extraneous" and what "extraneous" means. My proposal: "Couldn't parse character at position 23, please see help pmemsave for an example".


(qemu) pmemsave 0 512 /tmp/qemu.mem
invalid char in expression

Hm. Interesting. Again, would be nice if it printed me the offending character. My proposal: "Could not parse character at position 23, please see help pmemsave for an example".


(qemu) pmemsave 0 512 /tmp/qemu
invalid char in expression

Now I got rid of almost everything but it still doesn't work.


(qemu) pmemsave 0 512 qemu.mem

aha! No slashes?! Seriously?

(qemu) pmemsave 0 512M qemu.mem
pmemsave: extraneous characters at the end of line

And no "M" or "G" modifiers? If I want to dump 2GB then I'd have to calculate the number in bytes and paste that long string. I expected qemu to be able to parse the K, M, G suffixes.

Also, I'm wondering why it doesn't offer to dump all memory.

ProblemType: Bug
Architecture: amd64
CurrentDmesg:
 [150870.676062] kvm_intel: Unknown symbol kvm_vcpu_on_spin
 [150947.222923] cron[24260]: segfault at 0 ip (null) sp 00007fffe865eed8 error 14 in cron[400000+9000]
 [150947.224187] cron[24261]: segfault at 0 ip (null) sp 00007fffe865eed8 error 14 in cron[400000+9000]
Date: Sun Mar 21 15:03:13 2010
DistroRelease: Ubuntu 9.10
KvmCmdLine:
 UID        PID  PPID  C    SZ   RSS PSR STIME TTY          TIME CMD
 muelli   23807 23806 13 239738 228464 0 14:54 pts/8    00:01:22 /usr/bin/kvm -S -M pc -m 512 -smp 1 -name vanilla_ubuntu -monitor stdio -boot c -drive file=/home/muelli/qemu/ubuntu8.10/ubuntu.img,if=ide,index=0,boot=on -drive file=,if=ide,media=cdrom,index=2 -net nic,model=rtl8139,macaddr=f0:00:BA:12:34:56 -net user,hostfwd=tcp::2223-:22,smb=/tmp/share -serial pty -snapshot
MachineType: LENOVO 766636G
Package: kvm 1:84+dfsg-0ubuntu16+0.11.0+0ubuntu6.3
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: root=/dev/mapper/cryptroot source=UUID=9c3d5596-27c6-4fd5-bfcd-fa8eef6f1230 ro vdso32=0 quiet splash  crashkernel=384M-2G:64M,2G-:128M
ProcVersionSignature: Ubuntu 2.6.32-16.24-generic
SourcePackage: qemu-kvm
Uname: Linux 2.6.32-16-generic x86_64
dmi.bios.date: 03/12/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 7NETC0WW (2.20 )
dmi.board.name: 766636G
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7NETC0WW(2.20):bd03/12/2009:svnLENOVO:pn766636G:pvrThinkPadX61:rvnLENOVO:rn766636G:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 766636G
dmi.product.version: ThinkPad X61
dmi.sys.vendor: LENOVO

[Qemu-devel] [Bug 543478] Re: qemus pmemsave doesn't accept "/" in filename

[Muelli]

** Branch linked: lp:~ubuntu-bugs-auftrags-killer/qemu/proper-error-
characters

-- 
qemus pmemsave doesn't accept "/" in filename
https://bugs.launchpad.net/bugs/543478
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.

Status in QEMU: Invalid
Status in “qemu-kvm” package in Ubuntu: Incomplete

Bug description:
Binary package hint: qemu-kvm

Please see my conversation with qemu:

(qemu) pmemsave 
unexpected end of expression
(qemu) help pmemsave 
pmemsave addr size file -- save to disk physical memory dump starting at 'addr' of size 'size'
(qemu) pmemsave 0 512M /tmp/qemu.mem
pmemsave: extraneous characters at the end of line
(qemu) pmemsave 0 512 /tmp/qemu.mem
invalid char in expression
(qemu) pmemsave 0 512 /tmp/qemu
invalid char in expression
(qemu) pmemsave 0 512 qemu.mem
(qemu) pmemsave 0 512M qemu.mem
pmemsave: extraneous characters at the end of line



Let me comment on each one of those:
(qemu) pmemsave 
unexpected end of expression

I expected some sort of hint as to where to get more information. Maybe just a "Type ``help pmemsave'' to get syntax information" would be sufficient.


(qemu) help pmemsave 
pmemsave addr size file -- save to disk physical memory dump starting at 'addr' of size 'size'

Nice. But an example would be nice. My proposal: "I.e.: pmemsave 0 1G /tmp/qemu.mem"


(qemu) pmemsave 0 512M /tmp/qemu.mem
pmemsave: extraneous characters at the end of line

eh. Would be nice if it told me *which* character was "extraneous" and what "extraneous" means. My proposal: "Couldn't parse character at position 23, please see help pmemsave for an example".


(qemu) pmemsave 0 512 /tmp/qemu.mem
invalid char in expression

Hm. Interesting. Again, would be nice if it printed me the offending character. My proposal: "Could not parse character at position 23, please see help pmemsave for an example".


(qemu) pmemsave 0 512 /tmp/qemu
invalid char in expression

Now I got rid of almost everything but it still doesn't work.


(qemu) pmemsave 0 512 qemu.mem

aha! No slashes?! Seriously?

(qemu) pmemsave 0 512M qemu.mem
pmemsave: extraneous characters at the end of line

And no "M" or "G" modifiers? If I want to dump 2GB then I'd have to calculate the number in bytes and paste that long string. I expected qemu to be able to parse the K, M, G suffixes.

Also, I'm wondering why it doesn't offer to dump all memory.

ProblemType: Bug
Architecture: amd64
CurrentDmesg:
 [150870.676062] kvm_intel: Unknown symbol kvm_vcpu_on_spin
 [150947.222923] cron[24260]: segfault at 0 ip (null) sp 00007fffe865eed8 error 14 in cron[400000+9000]
 [150947.224187] cron[24261]: segfault at 0 ip (null) sp 00007fffe865eed8 error 14 in cron[400000+9000]
Date: Sun Mar 21 15:03:13 2010
DistroRelease: Ubuntu 9.10
KvmCmdLine:
 UID        PID  PPID  C    SZ   RSS PSR STIME TTY          TIME CMD
 muelli   23807 23806 13 239738 228464 0 14:54 pts/8    00:01:22 /usr/bin/kvm -S -M pc -m 512 -smp 1 -name vanilla_ubuntu -monitor stdio -boot c -drive file=/home/muelli/qemu/ubuntu8.10/ubuntu.img,if=ide,index=0,boot=on -drive file=,if=ide,media=cdrom,index=2 -net nic,model=rtl8139,macaddr=f0:00:BA:12:34:56 -net user,hostfwd=tcp::2223-:22,smb=/tmp/share -serial pty -snapshot
MachineType: LENOVO 766636G
Package: kvm 1:84+dfsg-0ubuntu16+0.11.0+0ubuntu6.3
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: root=/dev/mapper/cryptroot source=UUID=9c3d5596-27c6-4fd5-bfcd-fa8eef6f1230 ro vdso32=0 quiet splash  crashkernel=384M-2G:64M,2G-:128M
ProcVersionSignature: Ubuntu 2.6.32-16.24-generic
SourcePackage: qemu-kvm
Uname: Linux 2.6.32-16-generic x86_64
dmi.bios.date: 03/12/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 7NETC0WW (2.20 )
dmi.board.name: 766636G
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7NETC0WW(2.20):bd03/12/2009:svnLENOVO:pn766636G:pvrThinkPadX61:rvnLENOVO:rn766636G:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 766636G
dmi.product.version: ThinkPad X61
dmi.sys.vendor: LENOVO

[Qemu-devel] [Bug 543478] Re: qemus pmemsave doesn't accept "/" in filename

[Launchpad Bug Tracker]

[Expired for qemu-kvm (Ubuntu) because there has been no activity for 60
days.]

** Changed in: qemu-kvm (Ubuntu)
       Status: Incomplete => Expired

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/543478

Title:
  qemus pmemsave doesn't accept "/" in filename

Status in QEMU:
  Invalid
Status in “qemu-kvm” package in Ubuntu:
  Expired

Bug description:
  Binary package hint: qemu-kvm

Please see my conversation with qemu:

(qemu) pmemsave 
unexpected end of expression
(qemu) help pmemsave 
pmemsave addr size file -- save to disk physical memory dump starting at 'addr' of size 'size'
(qemu) pmemsave 0 512M /tmp/qemu.mem
pmemsave: extraneous characters at the end of line
(qemu) pmemsave 0 512 /tmp/qemu.mem
invalid char in expression
(qemu) pmemsave 0 512 /tmp/qemu
invalid char in expression
(qemu) pmemsave 0 512 qemu.mem
(qemu) pmemsave 0 512M qemu.mem
pmemsave: extraneous characters at the end of line



Let me comment on each one of those:
(qemu) pmemsave 
unexpected end of expression

I expected some sort of hint as to where to get more information. Maybe just a "Type ``help pmemsave'' to get syntax information" would be sufficient.


(qemu) help pmemsave 
pmemsave addr size file -- save to disk physical memory dump starting at 'addr' of size 'size'

Nice. But an example would be nice. My proposal: "I.e.: pmemsave 0 1G /tmp/qemu.mem"


(qemu) pmemsave 0 512M /tmp/qemu.mem
pmemsave: extraneous characters at the end of line

eh. Would be nice if it told me *which* character was "extraneous" and what "extraneous" means. My proposal: "Couldn't parse character at position 23, please see help pmemsave for an example".


(qemu) pmemsave 0 512 /tmp/qemu.mem
invalid char in expression

Hm. Interesting. Again, would be nice if it printed me the offending character. My proposal: "Could not parse character at position 23, please see help pmemsave for an example".


(qemu) pmemsave 0 512 /tmp/qemu
invalid char in expression

Now I got rid of almost everything but it still doesn't work.


(qemu) pmemsave 0 512 qemu.mem

aha! No slashes?! Seriously?

(qemu) pmemsave 0 512M qemu.mem
pmemsave: extraneous characters at the end of line

And no "M" or "G" modifiers? If I want to dump 2GB then I'd have to calculate the number in bytes and paste that long string. I expected qemu to be able to parse the K, M, G suffixes.

Also, I'm wondering why it doesn't offer to dump all memory.

ProblemType: Bug
Architecture: amd64
CurrentDmesg:
 [150870.676062] kvm_intel: Unknown symbol kvm_vcpu_on_spin
 [150947.222923] cron[24260]: segfault at 0 ip (null) sp 00007fffe865eed8 error 14 in cron[400000+9000]
 [150947.224187] cron[24261]: segfault at 0 ip (null) sp 00007fffe865eed8 error 14 in cron[400000+9000]
Date: Sun Mar 21 15:03:13 2010
DistroRelease: Ubuntu 9.10
KvmCmdLine:
 UID        PID  PPID  C    SZ   RSS PSR STIME TTY          TIME CMD
 muelli   23807 23806 13 239738 228464 0 14:54 pts/8    00:01:22 /usr/bin/kvm -S -M pc -m 512 -smp 1 -name vanilla_ubuntu -monitor stdio -boot c -drive file=/home/muelli/qemu/ubuntu8.10/ubuntu.img,if=ide,index=0,boot=on -drive file=,if=ide,media=cdrom,index=2 -net nic,model=rtl8139,macaddr=f0:00:BA:12:34:56 -net user,hostfwd=tcp::2223-:22,smb=/tmp/share -serial pty -snapshot
MachineType: LENOVO 766636G
Package: kvm 1:84+dfsg-0ubuntu16+0.11.0+0ubuntu6.3
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: root=/dev/mapper/cryptroot source=UUID=9c3d5596-27c6-4fd5-bfcd-fa8eef6f1230 ro vdso32=0 quiet splash  crashkernel=384M-2G:64M,2G-:128M
ProcVersionSignature: Ubuntu 2.6.32-16.24-generic
SourcePackage: qemu-kvm
Uname: Linux 2.6.32-16-generic x86_64
dmi.bios.date: 03/12/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 7NETC0WW (2.20 )
dmi.board.name: 766636G
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7NETC0WW(2.20):bd03/12/2009:svnLENOVO:pn766636G:pvrThinkPadX61:rvnLENOVO:rn766636G:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 766636G
dmi.product.version: ThinkPad X61
dmi.sys.vendor: LENOVO

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https://bugs.launchpad.net/bugs/543478

Title:
  qemus pmemsave doesn't accept "/" in filename

Status in QEMU:
  Invalid
Status in “qemu-kvm” package in Ubuntu:
  Expired

Bug description:
  Binary package hint: qemu-kvm

  Please see my conversation with qemu:

  (qemu) pmemsave 
  unexpected end of expression
  (qemu) help pmemsave 
  pmemsave addr size file -- save to disk physical memory dump starting at 'addr' of size 'size'
  (qemu) pmemsave 0 512M /tmp/qemu.mem
  pmemsave: extraneous characters at the end of line
  (qemu) pmemsave 0 512 /tmp/qemu.mem
  invalid char in expression
  (qemu) pmemsave 0 512 /tmp/qemu
  invalid char in expression
  (qemu) pmemsave 0 512 qemu.mem
  (qemu) pmemsave 0 512M qemu.mem
  pmemsave: extraneous characters at the end of line


  Let me comment on each one of those:
  (qemu) pmemsave 
  unexpected end of expression

  I expected some sort of hint as to where to get more information.
  Maybe just a "Type ``help pmemsave'' to get syntax information" would
  be sufficient.

  
  (qemu) help pmemsave 
  pmemsave addr size file -- save to disk physical memory dump starting at 'addr' of size 'size'

  Nice. But an example would be nice. My proposal: "I.e.: pmemsave 0 1G
  /tmp/qemu.mem"

  
  (qemu) pmemsave 0 512M /tmp/qemu.mem
  pmemsave: extraneous characters at the end of line

  eh. Would be nice if it told me *which* character was "extraneous" and
  what "extraneous" means. My proposal: "Couldn't parse character at
  position 23, please see help pmemsave for an example".

  
  (qemu) pmemsave 0 512 /tmp/qemu.mem
  invalid char in expression

  Hm. Interesting. Again, would be nice if it printed me the offending
  character. My proposal: "Could not parse character at position 23,
  please see help pmemsave for an example".

  
  (qemu) pmemsave 0 512 /tmp/qemu
  invalid char in expression

  Now I got rid of almost everything but it still doesn't work.

  
  (qemu) pmemsave 0 512 qemu.mem

  aha! No slashes?! Seriously?

  (qemu) pmemsave 0 512M qemu.mem
  pmemsave: extraneous characters at the end of line

  And no "M" or "G" modifiers? If I want to dump 2GB then I'd have to
  calculate the number in bytes and paste that long string. I expected
  qemu to be able to parse the K, M, G suffixes.

  Also, I'm wondering why it doesn't offer to dump all memory.

  ProblemType: Bug
  Architecture: amd64
  CurrentDmesg:
   [150870.676062] kvm_intel: Unknown symbol kvm_vcpu_on_spin
   [150947.222923] cron[24260]: segfault at 0 ip (null) sp 00007fffe865eed8 error 14 in cron[400000+9000]
   [150947.224187] cron[24261]: segfault at 0 ip (null) sp 00007fffe865eed8 error 14 in cron[400000+9000]
  Date: Sun Mar 21 15:03:13 2010
  DistroRelease: Ubuntu 9.10
  KvmCmdLine:
   UID        PID  PPID  C    SZ   RSS PSR STIME TTY          TIME CMD
   muelli   23807 23806 13 239738 228464 0 14:54 pts/8    00:01:22 /usr/bin/kvm -S -M pc -m 512 -smp 1 -name vanilla_ubuntu -monitor stdio -boot c -drive file=/home/muelli/qemu/ubuntu8.10/ubuntu.img,if=ide,index=0,boot=on -drive file=,if=ide,media=cdrom,index=2 -net nic,model=rtl8139,macaddr=f0:00:BA:12:34:56 -net user,hostfwd=tcp::2223-:22,smb=/tmp/share -serial pty -snapshot
  MachineType: LENOVO 766636G
  Package: kvm 1:84+dfsg-0ubuntu16+0.11.0+0ubuntu6.3
  PccardctlIdent:
   Socket 0:
     no product info available
  PccardctlStatus:
   Socket 0:
     no card
  ProcCmdLine: root=/dev/mapper/cryptroot source=UUID=9c3d5596-27c6-4fd5-bfcd-fa8eef6f1230 ro vdso32=0 quiet splash  crashkernel=384M-2G:64M,2G-:128M
  ProcVersionSignature: Ubuntu 2.6.32-16.24-generic
  SourcePackage: qemu-kvm
  Uname: Linux 2.6.32-16-generic x86_64
  dmi.bios.date: 03/12/2009
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 7NETC0WW (2.20 )
  dmi.board.name: 766636G
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr7NETC0WW(2.20):bd03/12/2009:svnLENOVO:pn766636G:pvrThinkPadX61:rvnLENOVO:rn766636G:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 766636G
  dmi.product.version: ThinkPad X61
  dmi.sys.vendor: LENOVO