diff options
Diffstat (limited to 'man/crypttab.xml')
| -rw-r--r-- | man/crypttab.xml | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/man/crypttab.xml b/man/crypttab.xml index 4cdc52dcb8..ee54499bfe 100644 --- a/man/crypttab.xml +++ b/man/crypttab.xml @@ -255,6 +255,7 @@ <listitem><para>Perform encryption using the same cpu that IO was submitted on. The default is to use an unbound workqueue so that encryption work is automatically balanced between available CPUs.</para> + <para>This requires kernel 4.0 or newer.</para> </listitem> </varlistentry> @@ -263,9 +264,10 @@ <term><option>submit-from-crypt-cpus</option></term> <listitem><para>Disable offloading writes to a separate thread after encryption. There are some - situations where offloading write bios from the encryption threads to a single thread degrades - performance significantly. The default is to offload write bios to the same thread because it benefits - CFQ to have writes submitted using the same context.</para> + situations where offloading write requests from the encryption threads to a dedicated thread degrades + performance significantly. The default is to offload write requests to a dedicated thread because it + benefits the CFQ scheduler to have writes submitted using the same context.</para> + <para>This requires kernel 4.0 or newer.</para> </listitem> </varlistentry> @@ -512,7 +514,8 @@ external /dev/sda3 keyfile:LABEL=keydev keyfile-timeout=10s</programlist <para>The PKCS#11 logic allows hooking up any compatible security token that is capable of storing RSA decryption keys. Here's an example how to set up a Yubikey security token for this purpose, using - <command>ykman</command> from the yubikey-manager project:</para> + <citerefentry project='debian'><refentrytitle>ykmap</refentrytitle><manvolnum>1</manvolnum></citerefentry> + from the yubikey-manager project:</para> <programlisting><xi:include href="yubikey-crypttab.sh" parse="text" /></programlisting> |