<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div><br class=""><blockquote type="cite" class=""><div class="WordSection1" style="page: WordSection1; font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><div class=""><div style="border-style: solid none none; border-top-color: rgb(225, 225, 225); border-top-width: 1pt; padding: 3pt 0in 0in;" class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><b class="">From:</b><span class="Apple-converted-space"> </span>Judy Hao<span class="Apple-converted-space"> </span><br class=""><b class="">Sent:</b><span class="Apple-converted-space"> </span>Thursday, October 20, 2016 2:27 PM<br class=""><b class="">To:</b><span class="Apple-converted-space"> </span>'<a href="mailto:kea-dev@lists.isc.org" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">kea-dev@lists.isc.org</a>' <<a href="mailto:kea-dev@lists.isc.org" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">kea-dev@lists.isc.org</a>><br class=""><b class="">Cc:</b><span class="Apple-converted-space"> </span>'<a href="mailto:jhao@brocade.com" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">jhao@brocade.com</a>' <<a href="mailto:jhao@brocade.com" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">jhao@brocade.com</a>><br class=""><b class="">Subject:</b><span class="Apple-converted-space"> </span>Logging leases to memfile<o:p class=""></o:p></div></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Good afternoon,<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">In kea-dhcp-server, I do not see any code to synchronize the lease file with storage device. Is that true or I missed something? If that is true, any rational (besides performance concern) behind this?<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">In isc-dhcp-server, there is a statement “dont-use-fsync” in dhcpd.conf, which instructs DHCP server if it should call fsync() when writing leases to the lease file.<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Thanks,<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Judy<span class="Apple-converted-space"> </span></div></div></blockquote></div><br class=""><div class="">
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