Public bug reported:
These days zram leaves staging and in many cases can be seen as ramdisk
replacement.
Currently compcache hook loads driver with single device instance, blocking any
additional usage of zram driver.
I suggest to add 16 /dev/zramX devices (same amount as with /dev/ramX).
That won't affect current zram utilization by compcache hook but will allow
convenient usage of zram for other purposes.
Below is trivial change is required to achieve above:
--- a/hook/compcache
+++ b/hook/compcache
@@ -138,7 +138,7 @@
if [ "$name" = zram ]; then
cat >>"$DESTDIR"/scripts/init-top/compcache <<EOF
-modprobe -q --ignore-install zram
+modprobe -q --ignore-install zram num_devices=16
EOF
elif [ "$name" = ramzswap ]; then
cat >>"$DESTDIR"/scripts/init-top/compcache <<EOF
** Affects: initramfs-tools (Ubuntu)
Importance: Undecided
Status: New
** Description changed:
These days zram leaves staging and in many cases can be seen as ramdisk
replacement.
Currently compcache hook loads driver with single device instance, blocking
any additional usage of zram driver.
I suggest to add 16 /dev/zramX devices (same amount as with /dev/ramX).
That won't affect current zram utilization by compcache hook but will allow
convenient usage of zram for other purposes.
Below is trivial change is required to achieve above:
- --- compcache.orig
- +++ compcache
+ --- a/hook/compcache
+ +++ b/hook/compcache
@@ -138,7 +138,7 @@
-
- if [ "$name" = zram ]; then
- cat >>"$DESTDIR"/scripts/init-top/compcache <<EOF
+
+ if [ "$name" = zram ]; then
+ cat >>"$DESTDIR"/scripts/init-top/compcache <<EOF
-modprobe -q --ignore-install zram
+modprobe -q --ignore-install zram num_devices=16
- EOF
- elif [ "$name" = ramzswap ]; then
- cat >>"$DESTDIR"/scripts/init-top/compcache <<EOF
+ EOF
+ elif [ "$name" = ramzswap ]; then
+ cat >>"$DESTDIR"/scripts/init-top/compcache <<EOF
--
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https://bugs.launchpad.net/bugs/1263618
Title:
compcache hook should add spare zram devices
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