Re: Optimising pxeboot disk size
Wojciech Puchar wrote: I couldn't find the hostname sent by dhcp, but found a way to find the ip address. just use hostname command. I did, but the answer is empty (remember this is before /etc/rc is run). Where is kept the data received by dhcp_client during pxe boot ? The only problem i have is that the echo done and other standard outputs are not visible in /var/log/messages. How can i keep them either in dmesg or /var/log/messages ? add second echo to /var/log/messages ;) Hope not to forget one ;-) But is there a system call or configuration to do that automatically ? I can see some echo in /etc/rc without any , and their result seems to go to /var/messages. I wish to learn to do clean scripting :-) Best regards, -- Bernard DUGAS Mobile +33 615 333 770 ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Optimising pxeboot disk size
add second echo to /var/log/messages ;) Hope not to forget one ;-) But is there a system call or configuration to do that automatically ? I can see some echo in /etc/rc without any , and their result seems to go to /var/messages. I wish to learn to do clean scripting :-) actually i don't know how it's done in stardard rc scripts ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Optimising pxeboot disk size
Hello, Wojciech Puchar wrote: i already did such things but with NetBSD 1.5 for my Xterminal distro. it's simple: mount / readonly, put everything here. in /etc put /etc/rc consisting only #!/bin/sh exec /systemrc in /systemrc put something like that: #!/bin/sh echo -n Mounting workstation config directory... #get your IP or MAC address using ifconfig,grep,cut,awk,how you like #put to to say MYIP /sbin/mount_nfs yournfsserver:/clients/etc/MYIP /etc echo done exec /etc/rc Thank you very much, it is now running well after some hardware adventure. I couldn't find the hostname sent by dhcp, but found a way to find the ip address. The only problem i have is that the echo done and other standard outputs are not visible in /var/log/messages. How can i keep them either in dmesg or /var/log/messages ? Best regards, -- Bernard DUGAS Mobile +33 615 333 770 ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Optimising pxeboot disk size
Thank you very much, it is now running well after some hardware adventure. I couldn't find the hostname sent by dhcp, but found a way to find the ip address. just use hostname command. The only problem i have is that the echo done and other standard outputs are not visible in /var/log/messages. How can i keep them either in dmesg or /var/log/messages ? add second echo to /var/log/messages ;) ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Optimising pxeboot disk size
On 12/16/08, Wojciech Puchar woj...@wojtek.tensor.gdynia.pl wrote: it's simple: More simple when you tell it ;-) Thanks a lot, i will try it tonight ! it doesn't have chance - must work :) I wish it's helpful, doing this doesn't just save space but saves time - you have to upgrade software once. So preserving consistency, which is the most important when you have lot of diskless stations ! exactly. i'm using just NetBSD 1.5 (uses LITTLE memory) + Xserver, so there are almost no updates, but anyway - it's stored once. you may like to make /etc-common directory and put most of files there, and symlinks in each station's /etc In fact, it makes me think that we miss a concept in mount, or at least i don't know it currently : imagine a -tl (TransparentLayer) option for mount, allowing to mount multiple source to the same directory, for instance /etc : there is already such think - mount_unionfs but i don't use it. if you mount over some directory - it's original contents (like my /etc/rc doing exec /systemrc) gets hidden. mount -r yournfsserver:/basic/etc /etc mount -tl -r yournfsserver:/TypeX/etc /etc mount -tl -r yournfsserver:/StationY/etc /etc mount_unionfs but i don't know how stable it is. When you want to change something, you add a rw TransparentLayer : mount -tl yournfsserver:/StationYchanges/etc /etc So that changed or added files are only stored in this rw partition, thus very small and easy to manage. This would be a kind of partition inheritance, like in object languages... Dreams are allowed :-) try mount_unionfs and mount_nullfs -- Paul ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Optimising pxeboot disk size
Wojciech Puchar wrote: mount_unionfs but i don't know how stable it is. Thanks to fill my dreams :-) The dream is close, but still a dream :-( http://www.freebsd.org/cgi/man.cgi?query=mount_unionfssektion=8apropos=0manpath=FreeBSD+7.0-RELEASE BUGS THIS FILE SYSTEM TYPE IS NOT YET FULLY SUPPORTED (READ: IT DOESN'T WORK)AND USING IT MAY, IN FACT, DESTROY DATA ON YOUR SYSTEM. USE AT YOUR OWN RISK. BEWARE OF DOG. SLIPPERY WHEN WET. Sad not to be a coder... Best regards, -- Bernard DUGAS Mobile +33 615 333 770 ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Optimising pxeboot disk size
on NFS server. Lot of root directories can be shared and mounted in fstab, after booting process : /usr, /home... In current solution, the minimum root directories i had to keep for managing to boot are : bin libexec sbin boot etc lib i already did such things but with NetBSD 1.5 for my Xterminal distro. it's simple: mount / readonly, put everything here. in /etc put /etc/rc consisting only #!/bin/sh exec /systemrc in /systemrc put something like that: #!/bin/sh echo -n Mounting workstation config directory... #get your IP or MAC address using ifconfig,grep,cut,awk,how you like #put to to say MYIP /sbin/mount_nfs yournfsserver:/clients/etc/MYIP /etc echo done exec /etc/rc please then add: /tmp, /var/tmp, /var/run, possibly /var/log as tmpfs in fstab OR mount it with per-station directory the same way as /etc I wish it's helpful, doing this doesn't just save space but saves time - you have to upgrade software once. you may like to make /etc-common directory and put most of files there, and symlinks in each station's /etc ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Optimising pxeboot disk size
Hi, I'm working on a project to have many diskless clients PXEbooting on 1 nfs server. This works now, but i would like to have a more efficient use of disk space on NFS server. Lot of root directories can be shared and mounted in fstab, after booting process : /usr, /home... In current solution, the minimum root directories i had to keep for managing to boot are : bin libexec sbin boot etc lib But it appears that only /etc is really specific to each diskless clientX, having basically fstab and rc.conf inside. All other directories could be shared, and specifically /boot which is more that 100MO : i would prefer not to duplicate it, as 10 servers would mean 1GO for nothing. Please would anybody help find a way to share all what we can during boot process ? Another way to ask the question is : how can we mount / and then /etc at the begining of boot process instead of mounting only / with etc inside ? I have tried to do links, but no way to make the boot process follow them... Thanks a lot, Best regards, ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Optimising pxeboot disk size
it's simple: More simple when you tell it ;-) Thanks a lot, i will try it tonight ! it doesn't have chance - must work :) I wish it's helpful, doing this doesn't just save space but saves time - you have to upgrade software once. So preserving consistency, which is the most important when you have lot of diskless stations ! exactly. i'm using just NetBSD 1.5 (uses LITTLE memory) + Xserver, so there are almost no updates, but anyway - it's stored once. you may like to make /etc-common directory and put most of files there, and symlinks in each station's /etc In fact, it makes me think that we miss a concept in mount, or at least i don't know it currently : imagine a -tl (TransparentLayer) option for mount, allowing to mount multiple source to the same directory, for instance /etc : there is already such think - mount_unionfs but i don't use it. if you mount over some directory - it's original contents (like my /etc/rc doing exec /systemrc) gets hidden. mount -r yournfsserver:/basic/etc /etc mount -tl -r yournfsserver:/TypeX/etc /etc mount -tl -r yournfsserver:/StationY/etc /etc mount_unionfs but i don't know how stable it is. When you want to change something, you add a rw TransparentLayer : mount -tl yournfsserver:/StationYchanges/etc /etc So that changed or added files are only stored in this rw partition, thus very small and easy to manage. This would be a kind of partition inheritance, like in object languages... Dreams are allowed :-) try mount_unionfs ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Optimising pxeboot disk size
Wojciech Puchar wrote: i already did such things but with NetBSD 1.5 for my Xterminal distro. it's simple: More simple when you tell it ;-) Thanks a lot, i will try it tonight ! I wish it's helpful, doing this doesn't just save space but saves time - you have to upgrade software once. So preserving consistency, which is the most important when you have lot of diskless stations ! you may like to make /etc-common directory and put most of files there, and symlinks in each station's /etc In fact, it makes me think that we miss a concept in mount, or at least i don't know it currently : imagine a -tl (TransparentLayer) option for mount, allowing to mount multiple source to the same directory, for instance /etc : mount -r yournfsserver:/basic/etc /etc mount -tl -r yournfsserver:/TypeX/etc /etc mount -tl -r yournfsserver:/StationY/etc /etc A file is first look for in yournfsserver:/StationY/etc, then in yournfsserver:/TypeX/etc and finally in yournfsserver:/basic/etc. This means that StationX will see in its /etc firts its specific files, then the files dedicated to TypeX station (webserver, dns server, workstation,...) and then all basic files unchanged from standard distribution. When you want to change something, you add a rw TransparentLayer : mount -tl yournfsserver:/StationYchanges/etc /etc So that changed or added files are only stored in this rw partition, thus very small and easy to manage. This would be a kind of partition inheritance, like in object languages... Dreams are allowed :-) Thanks a lot, Best regards, -- Bernard DUGAS Mobile +33 615 333 770 ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Optimising pxeboot disk size
Paul B. Mahol wrote: On 12/16/08, Wojciech Puchar woj...@wojtek.tensor.gdynia.pl wrote: When you want to change something, you add a rw TransparentLayer : mount -tl yournfsserver:/StationYchanges/etc /etc So that changed or added files are only stored in this rw partition, thus very small and easy to manage. This would be a kind of partition inheritance, like in object languages... Dreams are allowed :-) try mount_unionfs and mount_nullfs Thanks Paul, FreeBSD has always hidden treasures :-) MOUNT_NULLFS(8) doc is very detailled, but i can't find how to use it for my problem : being able to go from common shared configuration to specific private configuration. unionfs looks very close to my dream, but it is currently not available for production :-( Best regards, -- Bernard DUGAS Mobile +33 615 333 770 ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Optimising pxeboot disk size
MOUNT_NULLFS(8) doc is very detailled, but i can't find how to use it for my problem : being able to go from common shared configuration to specific you can't - nullfs doesn't do this. use symlinks /etc containing tons of links to /sharedetc and few files instead of symlink - for those that are different. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Optimising pxeboot disk size
On Tue, 2008-12-16 at 15:02 +0100, Bernard Dugas wrote: Wojciech Puchar wrote: i already did such things but with NetBSD 1.5 for my Xterminal distro. it's simple: More simple when you tell it ;-) Thanks a lot, i will try it tonight ! I wish it's helpful, doing this doesn't just save space but saves time - you have to upgrade software once. So preserving consistency, which is the most important when you have lot of diskless stations ! you may like to make /etc-common directory and put most of files there, and symlinks in each station's /etc In fact, it makes me think that we miss a concept in mount, or at least i don't know it currently : imagine a -tl (TransparentLayer) option for mount, allowing to mount multiple source to the same directory, for instance /etc : mount -r yournfsserver:/basic/etc /etc mount -tl -r yournfsserver:/TypeX/etc /etc mount -tl -r yournfsserver:/StationY/etc /etc A file is first look for in yournfsserver:/StationY/etc, then in yournfsserver:/TypeX/etc and finally in yournfsserver:/basic/etc. This means that StationX will see in its /etc firts its specific files, then the files dedicated to TypeX station (webserver, dns server, workstation,...) and then all basic files unchanged from standard distribution. When you want to change something, you add a rw TransparentLayer : mount -tl yournfsserver:/StationYchanges/etc /etc So that changed or added files are only stored in this rw partition, thus very small and easy to manage. This would be a kind of partition inheritance, like in object languages... Dreams are allowed :-) Apparently that sort of thing is available on plan9 OS. Everything is a file so you can mount remote and local devices- plus merge them in a single directory. Check it out on wikipedia... Dreams can come true! :) ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Optimising pxeboot disk size
On 12/16/08, Bernard Dugas bern...@dugas-family.org wrote: Paul B. Mahol wrote: On 12/16/08, Wojciech Puchar woj...@wojtek.tensor.gdynia.pl wrote: When you want to change something, you add a rw TransparentLayer : mount -tl yournfsserver:/StationYchanges/etc /etc So that changed or added files are only stored in this rw partition, thus very small and easy to manage. This would be a kind of partition inheritance, like in object languages... Dreams are allowed :-) try mount_unionfs and mount_nullfs Thanks Paul, FreeBSD has always hidden treasures :-) MOUNT_NULLFS(8) doc is very detailled, but i can't find how to use it for my problem : being able to go from common shared configuration to specific private configuration. unionfs looks very close to my dream, but it is currently not available for production :-( Well, I tested unionfs on CURRENT and it did not crashed on me. Feel free to test it on 7 STABLE and report results to developers. -- Paul ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Optimising pxeboot disk size
Paul B. Mahol wrote: Well, I tested unionfs on CURRENT and it did not crashed on me. Feel free to test it on 7 STABLE and report results to developers. Thanks for the feed-back, i will no more be afraid to test :-) I will tell you later, Best regards, -- Bernard DUGAS Mobile +33 615 333 770 ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
