<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=""><br class=""><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Jun 28, 2016, at 13:58 , Matt Kereczman <<a href="mailto:matt@linbit.com" class="">matt@linbit.com</a>> wrote:</div><div class=""><div class=""><br class="">You might want to make sure your version of 8.4.5 includes this commit:<br class=""><a href="http://git.drbd.org/drbd-8.4.git/commit/27ed4f3ca752b9bcc37d16edbb2791e626ab203d" class="">http://git.drbd.org/drbd-8.4.git/commit/27ed4f3ca752b9bcc37d16edbb2791e626ab203d</a><br class=""><br class=""></div></div></blockquote><br class=""></div><div>Interesting.</div><div>I thought my problem was that the output buffer was full: </div><div><br class=""></div><div>"DRBD’s protocol A is asynchronous, but the writing application will block as soon as the socket output buffer is full (see the sndbuf-size option in drbd.conf(5)). In that event, the writing application has to wait until some of the data written runs off through a possibly small bandwidth network link."</div><div><br class=""></div><div>So if I understand this correctly, the issue could be that my primary hadn’t received the ACK for the block and was rewriting it (as is frequent for a database).</div><div>Is there any way I could ascertain whether that is the case before I recompile and reinstall (which is no trivial matter for that database)? </div><div class=""><br class=""></div><div class=""><br class=""></div>Thank you for your help,<br class=""><div class="">
<div style="color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; " class=""><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; " class="">--</div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; " class="">Louis Munro<br class=""><br class=""></div></div>
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