Date: Sat, 07 May 2005 11:50:18 +0200 From: Eirik =?ISO-8859-1?B?2A==?=verby <ltning@anduin.net> To: <hartzell@alerce.com> Cc: "stable@freebsd.org" <stable@freebsd.org> Subject: Re: unionfs limitations? Message-ID: <BEA25BFA.14AC3%ltning@anduin.net> In-Reply-To: <17020.6038.618856.265788@satchel.alerce.com>
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On 07-05-05 03:19, "George Hartzell" <hartzell@kestrel.alerce.com> wrote: > Eirik =D8verby writes: >> Hi, >>=20 >> I just started playing with mounting ports into jails using unionfs >> (mount_unionfs -b /usr/ports_jail /usr/local/jails/jail-0/usr/ports), an= d >> many things seem to work fine. >> However, when trying to install either of mysql41-server or mysql41-clie= nt, >> I see the following: >>=20 >> [root@mpi1] /usr/ports/databases/mysql41-server# make install >> =3D=3D=3D> Installing for mysql-server-4.1.11_1 >> =3D=3D=3D> mysql-server-4.1.11_1 depends on shared library: mysqlclient.14 - >> found >> =3D=3D=3D> Generating temporary packing list >> =3D=3D=3D> Checking if databases/mysql41-server already installed >> ln: POSIX: Operation not supported >> *** Error code 1 >>=20 >> Stop in /usr/ports/databases/mysql41-server. >>=20 >> Did I miss out on something, or is this not going to work? Do I need to >> think in other ways? >> [...] >=20 > Here's one unionfs/jail gotcha that's bitten me a couple of times. If > you actually *use* (or, have used) the ports directory to build and > install stuff onto the "host" machine, the ports infrastructure in the > jail gets kind of confused. It seems to be checking for the files in > the dependencies, doesn't find them, goes to make them, and then > [depending on what state the relevant port directory is in], things > get "odd". I noticed that pretty early on, yea ;) =20 > I've started just using a virgin ports tree as the underpinnings for > my unionfs'ed jails. Same here.. =20 > Is there any chance that you've installed mysql-server on the host? Indeed I have, but not from that ports tree. What I did was create myself a "template" jail, containing all the base stuff plus some essential ports (perl and stuff). Then I unionfs-mount this one into all of my jails, and customize them at will. Weird thing happened this morning though, suddenly the box seemed half-dead= . I didn't touch it, someone else noticed because they weren't able to ssh in= . TCP connection established, but no auth phase. I also noticed in my active ssh sessions, that things were "dead", in the sense that when on the shell prompt, pressing ENTER only gave me a new, blank line. Logging in via serial console didn't work either, put in username and press ENTER and nothing happened. Best thing was when I tried to enter the debugger, it started spewing huge amounts of crap at me, to a point where I simply had to yank the power (i have remote power sockets, a blessing! ;). Not sure if this was unionfs related, but I'm on 5.4 as of a couple of days ago, so it is entirely possible there's something else weird up. Am I being too much of an optimist, hoping that my unionfs approach will work? The POSIX issue still stands, though. /Eirik
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