On Sunday 14 January 2018 19:47:51 Paul Wise wrote: > On Sun, Jan 14, 2018 at 11:43 PM, Gene Heskett wrote: > > Why was that limited? Its a gigabit port now. > > This is the commit that changed it: > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/com >mit/?id=bc631943faba6fc3f755748091ada31798fb7d50 > > PS: here is how I found the commit: > > $ git clone > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git $ > cd linux > $ git log -p -i --grep rock64 > commit e1915c8195b38393005be9b74bfa6a3a367c83b3 > ... > arm64: dts: rockchip: limit rk3328-rock64 gmac speed to 100MBit > for now commit f48f66a962a54c3d26d688c3df5441c9d1ba8730 > ... > And a second stopgap is limiting the speed of the gmac on the > rk3328-rock64 to 100MBit. While the hardware can reach 1GBit, > currently it is not stable. Limiting it to 100MBit for the time being > allows nfsroots to be used again until the problem is identified. > ... > arm64: dts: rockchip: limit rk3328-rock64 gmac speed to 100MBit > for now ... > commit bc631943faba6fc3f755748091ada31798fb7d50 > ... > arm64: dts: rockchip: limit rk3328-rock64 gmac speed to 100MBit > for now > > It looks like either the current kernel or the hardware has > reliability issues when the gmac is actually running at 1GBit. In my > test-case it is not able to boot on a nfsroot at this speed, as the > system will always lose the connection to the nfs-server during boot, > before reaching any login prompt and not recover from this. > > So until this is solved, limit the speed to 100MBit as with this > the nfsroot survives stress tests like an apt-get upgrade without > problems. ... > + /* shows instability at 1GBit right now */ > + max-speed = <100>;
Which I think demo's why I haven't used any nfs shares, or cifs/samba for that matter, in 3 or more years on any platform here at the coyote.den. It never was "stable" for me. While sshfs Just Works. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene>
