https://jira.whamcloud.com This file is an XML representation of an issue en-us 9.4.14 940014 05-12-2023 https://jira.whamcloud.com/browse/LU-13642 Lustre <p>Allow adding network interfaces with specific IP addresses. It is possible that an interface can have multiple IP addresses assigned to it. Since the IP address is explicitly used to describe an LNet NID, we should allow specifying network interfaces via their IP addresses. Linux routing can route packets based on their source IP addresses differently. It is potentially possible that routing can be setup such that Lustre traffic can be routed different from other application traffic, even though both are originating from the same interface.</p> LU-13642

lnetctl: Allow IP specification

Bug Minor Open Unresolved Frank Sehr Amir Shehata Fri, 5 Jun 2020 22:53:29 +0000 Sat, 6 Jan 2024 18:00:36 +0000 0 8 <p>I started to look into it.</p> <p>After some consideration and to keep a the syntax consistent between static and dynamic configuration the interface (–if flag) will be extended by the ip address. The format will be interface@ipaddress. The syntax will be backward compatible, no changes are necessary. The following combinations will be possible --if interface, --if interface@ipaddress or --if @ipaddress, (the first found interface will be chosen). The additional flag --ip to the "lnetctl net add" command to specify the ip address  will not be used. The ip address is set in the LNet NID and passed through the ioctl call to the ksocklnd kernel module. The module is enumerating the interfaces, but ignores  the ip address in the LNet NID. I am currently changing the behaviour to consider the ip address in the LNet NID in the choice of the interface. The default behaviour is maintained in case no IP address is found. Which means it picks the first available interface entry that corresponds to the specified physical interface. </p> <p>Note much work is being done for 2.16 to support IPv6. I have a patch that updates lnetctl to use netlink for configuration. I will push in the next few weeks. We can add this work on top of that patch.</p> <p>I will soon add the patches. Please see  IP specification in LNet for more info</p> <p><a href="http://example.com" class="external-link" target="_blank" rel="nofollow noopener">https://wiki.whamcloud.com/display/LNet/IP+specification+in+LNet</a></p> <p>"Frank Sehr &lt;fsehr@whamcloud.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/47660" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/47660</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-13642" title="lnetctl: Allow IP specification" class="issue-link" data-issue-key="LU-13642">LU-13642</a> lnet: Allow IP specification<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 2250cf8ac13789fa6c15a4160d6e8d249e3d962b</p> <p>"Frank Sehr &lt;fsehr@whamcloud.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/48300" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/48300</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-13642" title="lnetctl: Allow IP specification" class="issue-link" data-issue-key="LU-13642">LU-13642</a> lnet: Allow IP specification<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 2a70b25550a0fb370b81b247e7d2ad74e3489de9</p> <p>"Frank Sehr &lt;fsehr@whamcloud.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/c/fs/lustre-release/+/49281" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/49281</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-13642" title="lnetctl: Allow IP specification" class="issue-link" data-issue-key="LU-13642">LU-13642</a> lnet: Allow static IP specification<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 65c7faa92d9cec6028b623ff5fb3c659cfb74c6b</p> <p>"James Simmons &lt;jsimmons@infradead.org&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/c/fs/lustre-release/+/49525" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/49525</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-13642" title="lnetctl: Allow IP specification" class="issue-link" data-issue-key="LU-13642">LU-13642</a> lnet: modify lnet_inetdev to work with large NIDS<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 29189e13a53cd2544d1e14942011f3b37c2e0277</p> <p>"Oleg Drokin &lt;green@whamcloud.com&gt;" merged in patch <a href="https://review.whamcloud.com/c/fs/lustre-release/+/47660/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/47660/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-13642" title="lnetctl: Allow IP specification" class="issue-link" data-issue-key="LU-13642">LU-13642</a> lnet: Allow IP specification<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: 14cdcd61985aa02097791ff7a8173c2e62030697</p> <p>"Oleg Drokin &lt;green@whamcloud.com&gt;" merged in patch <a href="https://review.whamcloud.com/c/fs/lustre-release/+/49525/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/49525/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-13642" title="lnetctl: Allow IP specification" class="issue-link" data-issue-key="LU-13642">LU-13642</a> lnet: modify lnet_inetdev to work with large NIDS<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: 0b406c91d175b6cdbdf472b70a37e618cd66a72d</p> <p>"James Simmons &lt;jsimmons@infradead.org&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/c/fs/lustre-release/+/53605" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/53605</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-13642" title="lnetctl: Allow IP specification" class="issue-link" data-issue-key="LU-13642">LU-13642</a> lnet: Allow dynamic IP specification<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: b16477bb1d7aa3abe4215d862c034b6b2f855c9f</p> Related LU-10391 Development Rank 1|i01233: Rank (Obsolete) 9223372036854775807 Severity