[CRIU] [PATCH v4 1/3] net/sysctl: c/r all except *.conf.* and *.neigh.*

[Pavel Tikhomirov]

On 07/26/2016 06:17 PM, Pavel Emelyanov wrote:
> On 07/20/2016 05:27 PM, Pavel Tikhomirov wrote:
>> Add array of sysctls which we need(r/w in netns) to dump by name along
>> with their types, add NamedSysctlEntry'es to dump sysctl name+value
>> pairs to image
>>
>> Skip:
>> 1. non-(readable)writable sysctls as we can do nothing for them through
>> procfs
>> 2. conf and neigh directories are per-device and will be restored after
>> devices restore separately, also they might need special care like conf
>> sysctls need special order
>> 3. nf_log.xx if it is "NONE" as we can not set it with sysctl_op as
>> sysctl_write_char prints "\n" at the end and nf_log_proc_dostring does
>> not like '\n' for now, to fix it, sent patch "[v2]netfilter: nf_log:
>> fix error on write NONE to logger choice sysctl"
>>
>> Not skip: "igmp_link_local_mcast_reports" - !DANGEROUS! to use criu on
>> kernels v4.3-v4.5, @xemul: "we just suggest one to add the fixing
>> patch to kernel", so fixing patch is: commit 87a8a2ae65b7 ("igmp:
>> Namespaceify igmp_llm_reports sysctl knob"), see more in RHBZ#1352177
>>
>> *We have now 32 such net.* sysctls writable in VZ7 CT
>
> How about upstream Linux kernel? What's the list of virtualized sysctls in there?

Do I missed any sysctl? I installed mainstream kernel from master(config 
from fedora) and collected all r&w sysctls in net subdir except conf and 
neigh subdirs being in net-namespace. And so I found only 116 which are 
in these patch.

>

-- 
Best regards, Tikhomirov Pavel
Software Developer, Virtuozzo.