1. I mounted an overlayfs with uppderdir=/a, lowerdir=/b to /c
2. I copied fileA to the upperdir
3a. Did 'ls -l /a' Output is
-rwxrwxrwx 1 root root 22153090041 Jan 11 22:45 fileA
3b. Did 'ls -l /b' Output is empty.
3c. Did 'ls -l /c'. Output is
-????????? ? ? ? ? ? fileA
4. Did 'stat /c/fileA', Output is:
stat: cannot stat `fileA': No such file or directory
Is overlayfs broken? Did I do something wrong?
There is nothing in dmesg. Kernel is 3.5.0-26-generic #42.
How can I debug this?
I can do fairly advanced specific kernel debugging/recompiling with patches etc, but I don't know where to start.
---
ApportVersion: 2.6.1-0ubuntu10
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/hwC0D1', '/dev/snd/hwC0D2', '/dev/snd/hwC0D3', '/dev/snd/pcmC0D3p', '/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D8p', '/dev/snd/pcmC0D9p', '/dev/snd/by-path', '/dev/snd/controlC1', '/dev/snd/pcmC1D0c', '/dev/snd/pcmC1D0p', '/dev/snd/pcmC1D1c', '/dev/snd/pcmC1D2p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
DistroRelease: Ubuntu 12.10
IwConfig: Error: [Errno 2] No such file or directory
Lsusb: Error: [Errno 2] No such file or directory
MachineType: System manufacturer System Product Name
MarkForUpload: True
NonfreeKernelModules: nvidia
Package: linux (not installed)
ProcEnviron:
LC_CTYPE=en_US.UTF-8
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/zsh
ProcFB:
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-26-generic root=UUID=34781a0f-967e-4105-8127-22f56322773c ro nomodeset bootdegraded=true
ProcVersionSignature: Ubuntu 3.5.0-26.42-generic 3.5.7.6
RelatedPackageVersions:
linux-restricted-modules-3.5.0-26-generic N/A
linux-backports-modules-3.5.0-26-generic N/A
linux-firmware 1.95
RfKill: Error: [Errno 2] No such file or directory
Tags: quantal
Uname: Linux 3.5.0-26-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
WifiSyslog: Apr 10 12:31:54 data0 kernel: [345384.976058] usb 1-4: reset high-speed USB device number 3 using ehci_hcd
dmi.bios.date: 04/07/2006
dmi.bios.vendor: Phoenix Technologies, LTD
dmi.bios.version: ASUS A8N-E ACPI BIOS Revision 1013
dmi.board.name: A8N-E
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: 2.XX
dmi.chassis.asset.tag: 123456789000
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvrASUSA8N-EACPIBIOSRevision1013:bd04/07/2006:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnA8N-E:rvr2.XX:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:
apport-collect 1167305
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.