| Message ID | 20180611060016.20755-4-casantos@datacom.com.br |
|---|---|
| State | Accepted |
| Commit | d524cc7d9de549228b998ba5747b0d7cd4f24251 |
| Headers | show |
| Series | synchronize initab files and enable swap on startup | expand |
>>>>> "Carlos" == Carlos Santos <casantos@datacom.com.br> writes: > There is a call to swapoff in the shutdown sequence, so call "swapon -a" > on startup. As stated in the swapon man page, > All devices marked as "swap" in /etc/fstab are made available, except > for those with the "noauto" option. Devices that are already being > used as swap are silently skipped. > So even if the system has some init script to start/stop swap (e.g. from > a rootfs ovelay) calling swapon/swapoff would be harmless. I guess an explicit swapon <device> after swapon -a (with an entry for <device> in /etc/fstab) will fail with an error message, but OK - That is easy to fix if that happens. Committed, thanks.
>>>>> "Carlos" == Carlos Santos <casantos@datacom.com.br> writes: > There is a call to swapoff in the shutdown sequence, so call "swapon -a" > on startup. As stated in the swapon man page, > All devices marked as "swap" in /etc/fstab are made available, except > for those with the "noauto" option. Devices that are already being > used as swap are silently skipped. > So even if the system has some init script to start/stop swap (e.g. from > a rootfs ovelay) calling swapon/swapoff would be harmless. > Signed-off-by: Carlos Santos <casantos@datacom.com.br> Committed to 2018.02.x, thanks.
diff --git a/package/busybox/inittab b/package/busybox/inittab index 7cd203de0b..ff1725c775 100644 --- a/package/busybox/inittab +++ b/package/busybox/inittab @@ -18,6 +18,7 @@ ::sysinit:/bin/mount -o remount,rw / ::sysinit:/bin/mkdir -p /dev/pts /dev/shm ::sysinit:/bin/mount -a +::sysinit:/sbin/swapon -a null::sysinit:/bin/ln -sf /proc/self/fd /dev/fd null::sysinit:/bin/ln -sf /proc/self/fd/0 /dev/stdin null::sysinit:/bin/ln -sf /proc/self/fd/1 /dev/stdout
There is a call to swapoff in the shutdown sequence, so call "swapon -a" on startup. As stated in the swapon man page, All devices marked as "swap" in /etc/fstab are made available, except for those with the "noauto" option. Devices that are already being used as swap are silently skipped. So even if the system has some init script to start/stop swap (e.g. from a rootfs ovelay) calling swapon/swapoff would be harmless. Signed-off-by: Carlos Santos <casantos@datacom.com.br> --- package/busybox/inittab | 1 + 1 file changed, 1 insertion(+)