ubuntu apt-get update failed with aufs storage driver

[Crazykev]

With aufs storage driver enabled, when execute apt-get update in a ubuntu image container, will get a error. Like this

Ign http://mirrors.aliyun.com trusty InRelease
Hit http://mirrors.aliyun.com trusty-updates InRelease
Get:1 http://mirrors.aliyun.com trusty-backports InRelease [65.9 kB]
E: Unable to determine file size for fd 7 - fstat (2: No such file or directory)

It seems a 9pfs problem, post just in case someone meet the same problem.
An easy workaround is not use aufs storage driver when using ubuntu image.

[bergwolf]

Looks like hyperhq/hyperstart#74

Are you using a guest kernel with https://github.com/hyperhq/hyperstart/blob/master/build/kernel_patch/0001-HACK-9P-always-use-cached-inode-to-fill-in-v9fs_vfs_.patch ?

An easy way to verify is to run the test program mentioned in hyperhq/hyperstart#74 (comment) inside your ubuntu container.

[Crazykev]

@bergwolf yep, seems this patch has fixed it. It's the same problem.