Re: how to check how much data left to sync to disk at umount?

[Jeff Chua]

On Thu, Sep 17, 2015 at 9:50 AM, Dave Chinner <david@xxxxxxxxxxxxx> wrote:
> On Mon, Sep 07, 2015 at 01:29:33PM +0800, Jeff Chua wrote:
>> When umount a slow device such as an SD card, the command will take a
>> while to run depending on how much data is left to write to the
>> device. Is there way to check how much data is remaining waiting to
>> write to the device?
>
> $ grep "Dirty\|Writeback" /proc/meminfo
>
> And infer from that.

It be a big challenge if the SD write is not the only disk activity!

Jeff
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