Re: Kernel crash triggered by dd to file with memcg, worst on btrfs

Michal Hocko wrote: Richard Davies wrote: I have a test case in which I can often crash an entire machine by running dd to a file with a memcg with relatively generous limits. This is simplified from real world problems with heavy disk i/o inside containers. ... [I have also just reported

Re: Kernel crash triggered by dd to file with memcg, worst on btrfs

On 04/24/2014 01:58 AM, Michal Hocko wrote: I have a test case in which I can often crash an entire machine by running dd to a file with a memcg with relatively generous limits. This is simplified from real world problems with heavy disk i/o inside containers. The crashes are easy to trigger

Re: Kernel crash triggered by dd to file with memcg, worst on btrfs

On Thu 24-04-14 11:59:33, Richard Davies wrote: Michal Hocko wrote: Richard Davies wrote: I have a test case in which I can often crash an entire machine by running dd to a file with a memcg with relatively generous limits. This is simplified from real world problems with heavy disk

Re: Kernel crash triggered by dd to file with memcg, worst on btrfs

[CCing Vladimir] On Wed 16-04-14 18:42:10, Richard Davies wrote: Hi all, I have a test case in which I can often crash an entire machine by running dd to a file with a memcg with relatively generous limits. This is simplified from real world problems with heavy disk i/o inside containers.

Re: Kernel crash triggered by dd to file with memcg, worst on btrfs

Hi, what kernel version are you running? Marian On 04/16/2014 08:42 PM, Richard Davies wrote: Hi all, I have a test case in which I can often crash an entire machine by running dd to a file with a memcg with relatively generous limits. This is simplified from real world problems with heavy

Re: Kernel crash triggered by dd to file with memcg, worst on btrfs

Richard Davies wrote: I have a test case in which I can often crash an entire machine by running dd to a file with a memcg with relatively generous limits. This is simplified from real world problems with heavy disk i/o inside containers. The crashes are easy to trigger when dding to create a

Kernel crash triggered by dd to file with memcg, worst on btrfs

Hi all, I have a test case in which I can often crash an entire machine by running dd to a file with a memcg with relatively generous limits. This is simplified from real world problems with heavy disk i/o inside containers. The crashes are easy to trigger when dding to create a file on btrfs.