<div class="zcontentRow"> <p><br></p><div class="zhistoryHeader" style="line-height: 21px; white-space: normal; padding: 8px; background-color: rgb(245, 246, 248);"><div><strong language-data="HistorySenderTxt">发件人：</strong><span class="zreadUserName"> <berrange@redhat.com>;</span></div><div><strong language-data="HistoryTOTxt">收件人：</strong><span class="zreadUserName" style="display: inline;"> <jferlan@redhat.com>;</span></div><div><strong language-data="HistoryCCTxt">抄送人：</strong><span class="zreadUserName" style="display: inline;">芦志朋10108272;</span><span class="zreadUserName" style="display: inline;"> <libvir-list@redhat.com>;</span></div><div><strong language-data="HistoryDateTxt">日 期 ：</strong><span class="">2017年07月11日 17:11</span></div><div><strong language-data="HistorySubjectTxt">主 题 ：</strong><span class="zreadTitle"><strong>Re: [libvirt] [PATCH] util: increase libnl buffer size to 1M</strong></span></div></div><p class="zhistoryContent" style="line-height: 21px; white-space: normal;"><br></p><div style="white-space: normal;">>>On Mon, Jul 10, 2017 at 02:51:34PM -0400, John Ferlan wrote:<br>>><br>> ><br>>> On 06/29/2017 02:05 PM, ZhiPeng Lu wrote:<br>>> > nl_recv() returns the error "No buffer space available"<br>>> > when using virsh destroy domain with 240 or more<br>>> > passhthrough network interfaces.<br>>> <br>>> pass-through<br>>> <br>>> > The patch increases libnl sock receive buffer size to 1M,<br>>> > and nl_recv() doesn't return error when destroying domain<br>>> > with 512 network interfaces.<br>>> > <br>>> > Signed-off-by: ZhiPeng Lu <lu.zhipeng@zte.com.cn><br>>> > ---<br>>> >  src/util/virnetlink.c | 4 ++--<br>>> >  1 file changed, 2 insertions(+), 2 deletions(-)<br>>> > <br>>> <br>>> This feels like something that perhaps should be configurable - that is<br>>> some /etc/libvirt/libvirtd.conf variable; otherwise, we'll keep hitting<br>>> some conflated maximum based on the size of something.<br><br>>1 MB matches what systemed/udevd uses, so if we hit that limit, then  the<br>>system as a whole is going to struggle already. So I don't think we need<br>>make it configurable.<br><br><br><br><p class="ordinary-output target-output clearfix" style="margin-top: 0px;margin-bottom: 0px;padding: 0px;line-height: 22px;font-size: 16px;color: rgb(51, 51, 51)"><span left-pos="0|92" right-pos="0|92" space="" class="">----------1M is just an experience value, and I feel that setting up a configuration item</span></p><p class="ordinary-output target-output clearfix" style="margin-top: 0px;margin-bottom: 0px;padding: 0px;line-height: 22px;font-size: 16px;color: rgb(51, 51, 51)"><span left-pos="0|92" right-pos="0|92" space="" class=""> can accommodate the needs of different users.</span><span left-pos="95|86" right-pos="95|86" space="0| " class="" tabcount="-1"> </span></p><p class="ordinary-output target-output clearfix" style="margin-top: 0px;margin-bottom: 0px;padding: 0px;line-height: 22px;font-size: 16px;color: rgb(51, 51, 51)"><span left-pos="95|86" right-pos="95|86" space="0| " class="" tabcount="-1">In addition, this is only the netlink socket receive buffer size that will not affect the entire system.</span></p><p class="ordinary-output target-output clearfix" style="margin-top: 0px;margin-bottom: 0px;padding: 0px;line-height: 22px;font-size: 16px;color: rgb(51, 51, 51)"><span left-pos="95|86" right-pos="95|86" space="0| " class="" tabcount="-1">The default value can still be set to 128K.</span></p></div><p><br></p><p><br></p><div class="zMailSign"><div><div><div><div><p style="font-family: 宋体; font-size: 7.0px; line-height: normal; widows: 1;"><span style="font-size:12px;color:#58595B;font-family:微软雅黑;font-size: 7.0px;"><span class="signedit"><br></span></span></p><p style="font-family: 宋体; font-size: medium; line-height: normal; widows: 1;"><span style="font-size:12px;color:#58595B;font-family:微软雅黑"><span class="signedit" id="sign_name">芦志朋</span> <span style="font-family:Arial"><span class="signedit" id="sign_name_eng">luzhipeng</span></span></span></p><p style="font-size: 7.0px; line-height: normal; widows: 1;"><span style="font-size:12px;color:#58595B;font-family:微软雅黑;font-size: 7.0px;"><span style=""><span class="signedit"><br></span></span></span></p><p style="font-family: 宋体; font-size: medium; line-height: normal; widows: 1;"><span style="font-size:10px;color:#58595B;font-family:微软雅黑"><span class="signedit" id="sign_position">IT开发工程师</span> <span style="font-family:Arial"><span class="signedit" id="sign_position_eng">IT Development
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