On Wed, Oct 11, 2023 at 10:49 PM Andy Smith <a...@strugglers.net> wrote: > > On Wed, Oct 11, 2023 at 04:25:58PM -0500, Mark Copper wrote: > > suddenly, all files created on /dev/sda1 for the last 27 days have > > disappeared, even files I edited this morning before restarting. Like the > > clock was turned back a month. The disk, a new 18 TB, passed the test > > This happened to a customer of mine once, and they asked me to look > into it. When I did I found that: > > - they were using LVM > - they'd taken a snapshot of their root fs > - they were finding and mounting their root fs by fs UUID > - snapshot obviously had same fs UUID > - the kernel was finding the snapshot first at boot > > Could anything like that be happening?
That's devious. I can't help but wonder how many hundreds or thousands of man hours were wasted because LVM was not designed to avoid the problem by default. Jeff