Re: Substantial COMPAT_LINUX changes in netbsd-5?

[christos%zoulas.com@localhost (Christos Zoulas)]

On Jan 19, 10:51am, pettai%nordu.net@localhost (Fredrik Pettai) wrote:
-- Subject: Re: Substantial COMPAT_LINUX changes in netbsd-5?

| On Jan 15, 2010, at 4:55 PM, Christos Zoulas wrote:
| > In article <4B4F9CBC.8080102%nordu.net@localhost>,
| > Fredrik Pettai  <pettai%nordu.net@localhost> wrote:
| >> On 1/14/10 6:16 PM, Hauke Fath wrote:
| >>
| >> I also hit problems running the Veritas Netbackup client for Linux  
| >> after
| >> upgrading to netbsd-5 (from netbsd-4).
| >>
| >>> Any idea what changes in COMPAT_LINUX shipped with netbsd-5 might be
| >>> responsible?
| >>
| >> [...]
| >>
| >> After that, we at least got a full backup to work, but the  
| >> incremental
| >> backups still fails. It doesn't feel stable ATM. I just noticed  
| >> that the
| >> df command seems to get "blocked" during a incremental backup try.
| >>
| >> -bash-4.0$ ktruss df
| >
| > I think that the namei changes that handle the emulated root could  
| > be at
| > fault here, or NFS. Have you tried using a loopback mount?
| 
| Loopback seems to work, but then again, we had problems running that.
| So the hanging df seems to be COMPAT_LINUX + NFS related.
| 
| How can we help to find the cause so it can be fixed?

Make a LOCKDEBUG+DEBUG+DIAGNOSTIC kernel and see if you can get to ddb
when you get stuck.

christos