<div dir="ltr"><div><div><div><div>Thanks Chris<br><br>An interesting and informative presentation.<br><br>Looking forward to part two.<br><br>Initially, I felt that I can/should convert everything from ext* to btrfs. But as the presentation progressed, I felt that there are many caveats.<br><br></div><div>For example, one still needs LVM for swap. I avoided LVM in the past (not that it is bad, just another part I don't need), and don't want to introduce it just to get btrfs going.<br><br></div><div>There is also the lack of support for higher levels of RAID, though RAID-1 works well.<br><br></div></div>And there is fragmentation, and recommendation against btrfs for MySQL.<br><br></div>One thing you can add to the future part two is : if I am now on ext*, how do you convert to btrfs? <br>Is there a migration tool to do that?<br>Or you have to tar/cpio everything then copy things over? <br>If I start with a full backup of the current system, what is it that I need to do after a restore (change file system types in /mount-point/etc/fstab, or there is more to it that that).<br></div>How do I restore a system and over a btrfs-RAID configuration?<br><div><div><div><br></div></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Apr 14, 2015 at 12:22 AM, Chris Irwin <span dir="ltr"><<a href="mailto:chris@chrisirwin.ca" target="_blank">chris@chrisirwin.ca</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hopefully everybody got some knowledge on BTRFS today. I didn't get a<br>
chance to cover some topics like snapshots, gotchas, and more<br>
importantly, the troubles I had (mostly self-inflicted) and how I<br>
recovered from them. Maybe the latter is better left for a blog post.<br>
<br>
Anyway, I've posted the slides (as-used) on my blog[1]. Also, I believe<br>
they will be added to <a href="http://kwlug.org" target="_blank">kwlug.org</a>.<br>
<br>
1. <a href="https://chrisirwin.ca/posts/btrfs-presentation/" target="_blank">https://chrisirwin.ca/posts/btrfs-presentation/</a><br>
<br>
If anybody wants to try out BTRFS, I don't want to discourage you,<br>
HOWEVER, I can't stress the importance of backups enough. BTRFS can be<br>
treated like a "normal" filesystem, but you can experiment and<br>
enable enough extra features that will quickly leave you in a bit of<br>
pain.<br>
<br>
If there are any other questions, please post them to the list. There<br>
were a lot in the meeting, and probably some we didn't get to for time.<br>
<span class="HOEnZb"><font color="#888888"><br>
--<br>
Chris Irwin<br>
<br>
email: <a href="mailto:chris@chrisirwin.ca">chris@chrisirwin.ca</a><br>
xmpp: <a href="mailto:chris@chrisirwin.ca">chris@chrisirwin.ca</a><br>
web: <a href="https://chrisirwin.ca" target="_blank">https://chrisirwin.ca</a><br>
<br>
<br>
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