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Date:      Mon, 07 Mar 2022 15:06:09 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 254721] Swap on ZFS can crash server in high memory usage conditions
Message-ID:  <bug-254721-227-IskubnbPTg@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-254721-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-254721-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D254721

crest@rlwinm.de changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |crest@rlwinm.de

--- Comment #4 from crest@rlwinm.de ---
The (long and) short of it is: writing to ZFS can require heap allocations
making ZVOLs unsuitable as swap devices (swapping to normal files on ZFS mo=
unts
would be even worse).

The only reliable solution is to use something simpler as swap space e.g. a
gmirror+geli partition. I know this sucks if you have no space left on your
disks.

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