Hang While copying large data files

[Amit]

i am working on chromium Browser.

when i am using ecrypytfs and while copying some heavy data around 35 MB(it amounts to like 1600 files) from non ecryptfs file path to ecryptfs file path.

my complete system hangs and kernel panics.

Thanks & Regards,
Amit Garg

[Tyler Hicks (tyhicks)]

Hi Amit - I'm sorry to hear that you're having trouble.

Can you please take a photo of the kernel panic and attach it to this bug report?

[Amit (g2291632-amit)]

Please find kernel panic Logs.

  301.469520] Kernel panic(CPU:0) - not syncing: hung_task: blocked tasks
[ 301.474918] [<c06926cc>] (unwind_backtrace+0x0/0xfc) from [<c0b3db9c>] (dump_stack+0x20/0x34)
[ 301.483355] [<c0b3db9c>] (dump_stack+0x20/0x34) from [<c0b3dc28>] (panic+0x78/0xf8)
[ 301.491073] [<c0b3dc28>] (panic+0x78/0xf8) from [<c070b318>] (watchdog+0x204/0x26c)
[ 301.491178] [<c070b318>] (watchdog+0x204/0x26c) from [<c06e5278>] (kthread+0x8c/0x94)
2012-02-08T13:54:50.863370+09:00 localhost kernel: [ 301.467677] INFO: task chrome:2680 blocked for more than 60 seconds.

i am mounting ecryptfs on ext4 file system .
is this create any problem.

thanks & regards,
Amit garg

[Tyler Hicks (tyhicks)]

Unfortunately, that stack trace isn't helpful to debugging the issue.

Are there any eCryptfs-specific messages in the logs?

Can you tell us about your hardware specifications?

[Amit (g2291632-amit)]

is there any processor dependencies for ecryptfs .

because when i am doing unzip a big file that contains (1600 files) ..that time it also hang.

Our device is Arm based .1 Ghz processor and 1 Gb Ram.

its only problem with ecryptfs because when we are doing this all (Like mv , cp , untar ) with normal file system ext4 all are working fine
but some thing is happening when we are doing on ecryptfs mounted file system.

Thanks & Regards,
Amit Garg

[Amit (g2291632-amit)]

https://bugs.launchpad.net/ecryptfs/+bug/431975.

i have change in kernel as u mention in bug/431975 but still my device is hang .

please help me.

Thanks & Regards,
Amit

[Amit (g2291632-amit)]

and its hanging in truncate -s 4G dummy

so please resolve this what is happening with ecryptfs.

Thanks & Regards,
Amit Garg

[Amit (g2291632-amit)]

Nyes itsa not duplicate.

when i am using ecrypytfs and while copying some heavy data around 35 MB(it amounts to like 1600 files) from non ecryptfs file path to ecryptfs file path.

my complete system hangs and kernel panics.

so its not duplicate

[Dustin Kirkland  (kirkland)]

Copying how?

Using the cp command? Using rsync? Using Nautilus or a graphical file manager?

I just used rsync to copy 4GB of data to my encrypted home directory
in eCryptfs.

[Amit (g2291632-amit)]

I am usnig Kernel 2.6.35
i am mounting on ext4 file system.

its hanging only heavy file movement .

and i am using CP command.

Thanks & regards,
Amit

[Tyler Hicks (tyhicks)]

On 2012-02-15 11:03:45, Amit wrote:
> I am usnig Kernel 2.6.35

Is this a unmodified, vanilla 2.6.35 kernel or is this a distro kernel?
If it is a distro kernel, which distro and which version?

> i am mounting on ext4 file system.
>
> its hanging only heavy file movement .

You stated that you're running on an arm device. Keep in mind that
encryption can be demanding of the processor. Your arm device will
likely be very slow at encrypting large amounts of data.

Unfortunately, I don't have an arm device to test with, but I have heard
of others who are successfully using eCryptfs with arm devices.