[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] pvgrub2 is merged
Il 29/11/2013 13:58, Fabio Fantoni ha scritto: Il 29/11/2013 12:41, Vladimir 'Ï-coder/phcoder' Serbinenko ha scritto:On 29.11.2013 12:28, Fabio Fantoni wrote:Il 28/11/2013 15:17, Fabio Fantoni ha scritto:I updated git to commit 69ca97c820a623f85baf2db1627e19bef9c24e44 and theIl 28/11/2013 15:05, Vladimir 'Ï-coder/phcoder' Serbinenko ha scritto:On 28.11.2013 14:07, Fabio Fantoni wrote:Ah I forgot: you need to "insmod xzio" since debian ones are compressed.Il 27/11/2013 18:35, Andrey Borzenkov ha scritto:Ð Wed, 27 Nov 2013 17:24:53 +0100 Fabio Fantoni <fabio.fantoni@xxxxxxx> ÐÐÑÐÑ:Il 27/11/2013 17:03, Vladimir 'Ï-coder/phcoder' Serbinenko ha scritto:On 27.11.2013 16:59, Fabio Fantoni wrote:Il 27/11/2013 12:50, Vladimir 'Ï-coder/phcoder' Serbinenko ha scritto:That pretty much explains what happened: you don't have any/boot/grub2/grub.cfg and when looking for /boot/grub/grub.cfg GRUBfoundits own memdisk and fell into recursion. I'm not sure what shouldbe the proper way to solve this recursion.Yes, it was a bit naive on my side. Recursion in principle can bestopped by using global variable, but search is limited to the firstmatch only anyway, so I guess it is not worth it.Anyone know how to exclude memdisk from the search please?Please look in grub2 sources at docs/osdetect.cfg. It implements advanced run-time detection of possible bootable files fromvarious operating systems. It boils down to loop across all devices, and of course you can either limit device names (like looking for hd*only) or explicitly exclude known ones (like memdisk).Is it possible to specify a different default grub.cfg path (different from all other distributions) changing this command:./grub-mkstandalone --grub-mkimage=./grub-mkimage -o pvgrub2.xen -Ox86_64-xen -d grub-core/ boot/grub/grub.cfg Is it hardcoded as /boot/grub/grub.cfg for grub memdisk or can be set?Not really. Currently the situation is - grub-mkstandalone hardcodes $prefix as (memdisk)/boot/grub- after launch grub unconditionally starts "normal" module if at allpossible - normal module always tries to load and execute $prefix/grub.cfg if no explicit configuration file name is given as argument But I think that using osdetect.cfg or something based on this idea won't require changing defaults at all.Thanks for your reply. I did this script that is working about finding and include the grub.cfg of pv domUs with many cases: cat > boot/grub/grub.cfg <<EOF insmod lvm insmod ext2 insmod part_msdos insmod part_gpt insmod btrfs insmod regexp for dev in (*); do # $device: parenthesis removed from $dev regexp -s device '\((.*)\)' $dev set root=$device for file in /boot/vmlinuz-* /boot/linux-*; do if test -f $file; then set saved_root=$root fi done done set root=$saved_root if test -f /boot/grub2/grub.cfg ; then configfile /boot/grub2/grub.cfg elif test -f /boot/grub/grub.cfg ; then configfile /boot/grub/grub.cfg fi EOF@xen developer: Are there other modules to insert for other partitions or file systems, other grub cfg path for other distributions or otherkernel type to search that support xen pv domUs? I think is good do and post complete pvgrub2 cfg that support all pv domUs.@xen and grub developer: I'm still unable to boot any entry of Sid pvdomU using official kernel: xl -vvv create -c /etc/xen/sid.cfg ... Caricamento Linux 3.11-1-amd64... Caricamento ramdisk iniziale...xc: debug: hypercall buffer: total allocations:247 total releases:247xc: debug: hypercall buffer: current allocations:0 maximum allocations:4 xc: debug: hypercall buffer: cache current size:4 xc: debug: hypercall buffer: cache hits:236 misses:4 toobig:7 Any ideas?If you need more tests/informations tell me and I'll post them. Thanks for any reply.Thanks for reply, in the meantime I rebuilt updated grub2 from git (commit b67422d33de8eee83700db534a45b2ac5e5ed67a) and there is a regression from build of some days ago (I don't remember the exact commit, probably was of 24 or 25 november). Fails on script I posted on previous mail showing some errors:kern/dl.c:619: module name: test kern/dl.c:620: init function: 0x3f5abdd4 error: two arguments expected. commands/wildcard.c:164: Regexp is ^vmlinuz-.*$ commands/wildcard.c:164: Regexp is ^linux-.*$ error: two arguments expected. commands/wildcard.c:164: Regexp is ^vmlinuz-.*$ commands/wildcard.c:164: Regexp is ^linux-.*$ error: two arguments expected. commands/wildcard.c:164: Regexp is ^vmlinuz-.*$ commands/wildcard.c:164: Regexp is ^linux-.*$Full log with debug on attachment.regression persist. About Sid boot adding "insmod xzio" not solve the problem. Can you give me details of your working cases?Can you send me the exact kernel? My sid kernel work fine. (Resent re-adding xen-devel and grub-devel) I have updated Sid domU today before retry with pvgrub2.Latest version of kernel and grub is installed, on attachment the grub.cfg of domU. If domU's grub.cfg is ok, what is git commit and details of your pvgrub2 build working? My actual build is: git clone git://git.sv.gnu.org/grub.git ./autogen.sh ./configure --target=x86_64 --with-platform=xen make mkdir -p boot/grub/ cat > boot/grub/grub.cfg <<EOF insmod lvm insmod ext2 insmod part_msdos insmod part_gpt insmod btrfs insmod xzio insmod regexp for dev in (*); do # $device: parenthesis removed from $dev regexp -s device '\((.*)\)' $dev set root=$device for file in /boot/vmlinuz-* /boot/linux-*; do if test -f $file; then set saved_root=$root fi done done set root=$saved_root if test -f /boot/grub2/grub.cfg ; then configfile /boot/grub2/grub.cfg elif test -f /boot/grub/grub.cfg ; then configfile /boot/grub/grub.cfg fi EOF./grub-mkstandalone --grub-mkimage=./grub-mkimage -o pvgrub2.xen -O x86_64-xen -d grub-core/ boot/grub/grub.cfg And I use Wheezy (debian 7) as dom0 with xen-unstable from git. If you need more tests/informations tell me and I'll post them. Thanks for any reply. Attachment:
grub.cfg _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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