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Date:   Thu, 08 Apr 2021 11:58:50 -0700
From:   "L. A. Walsh" <lkml@tlinx.org>
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To:     overlayfs <linux-unionfs@vger.kernel.org>
Subject: odd error: why: mount: /home2: mount(2) system call failed: Stale
 file handle
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Started to try overlay fs w/one fs, but decided on another, so
umounted the first -- hadn't done any changes.

Then tried a different lower dir (/home) and tried to mount into new
dir /home2.  Got:
mount: /home2: mount(2) system call failed: Stale file handle

any idea why?  I cleared out contents of workdir (two empty dirs)
but still didn't work again.

running a Vanilla-ish self-made kernel version 5.9.2...
don't know what other info I should provide...oh well...