"jbra...@dismail.de" <jbra...@dismail.de> writes: > Hey Samuel, this is another modification of a previous commit. > Hopefully this addresses your critiques. I also added in > "-E root_owner=$UID:0" to some other files, where I thought it > was appropirate. Hopefully I didn't make any mistakes. I did test > this by the way. I was able to get ~/silly/silly1 to be two > nested ext2fs translators. All without having to execute "sudo"!
Just a ping Samuel. Did you see this commit? Is it good to be pushed to the Hurd wiki? I'm not seeing it here: https://git.savannah.gnu.org/cgit/hurd/web.git/log/ Thanks, Joshua > > * hurd/translator/ext2fs.mdwn: explain how to create a custom > filesystem, and mentioned that the current limit for how many > nested ext2fs filesystems there could be...is 32. > > * faq/still_useful: sbin/mk2fs dummy.fs -> sbin/mk2fs -E root_owner=$UID:0 > dummy.fs > > * hurd/documentation/translators.html: as above. > > * open_issues_/64-bit_port.mdwn: as above > --- > faq/still_useful.mdwn | 2 +- > hurd/documentation/translators.html | 2 +- > hurd/translator/ext2fs.mdwn | 51 +++++++++++++++++++++++++++++ > open_issues/64-bit_port.mdwn | 2 +- > 4 files changed, 54 insertions(+), 3 deletions(-) > > diff --git a/faq/still_useful.mdwn b/faq/still_useful.mdwn > index 82e03078..575781a1 100644 > --- a/faq/still_useful.mdwn > +++ b/faq/still_useful.mdwn > @@ -39,7 +39,7 @@ various servers are designed for this sort of modification. > > personal filesystem > > > > $ dd < /dev/zero > myspace.img bs=1M count=1024 > -> $ /sbin/mke2fs myspace.img > +> $ /sbin/mke2fs -E root_owner=$UID:0 myspace.img > > $ settrans myspace /hurd/ext2fs myspace.img > > $ cd myspace > > diff --git a/hurd/documentation/translators.html > b/hurd/documentation/translators.html > index e455f730..348774d1 100644 > --- a/hurd/documentation/translators.html > +++ b/hurd/documentation/translators.html > @@ -212,7 +212,7 @@ I recommend that you start by reading the > <code>/bin/mount</code> command, > it is only a small script. Because setting filesystem translators is > similar to mounting partitions, you can easily grasp the concept this way. > Make a file system image with <code>dd if=/dev/zero of=dummy.fs bs=1024k > -count=8; /sbin/mke2fs dummy.fs</code> and "mount" it with <code>settrans -c > dummy > +count=8; /sbin/mke2fs -E root_owner=$UID:0 dummy.fs</code> and "mount" it > with <code>settrans -c dummy > /hurd/ext2fs `pwd`/dummy.fs</code>. Note that the translator is not started > yet, no new <code>ext2fs</code> process is running (verify with <code>ps > Aux</code>). Check that everything is correct using > <code>showtrans</code></p> > diff --git a/hurd/translator/ext2fs.mdwn b/hurd/translator/ext2fs.mdwn > index 957b9c13..9be6c885 100644 > --- a/hurd/translator/ext2fs.mdwn > +++ b/hurd/translator/ext2fs.mdwn > @@ -32,6 +32,57 @@ Extend ext2fs to support 64bit time. > > [[!inline pagenames=faq/2_gib_partition_limit raw=yes feeds=no]] > > +## Create your own custom ext2fs > + > + $ dd if=/dev/zero of=silly.fs bs=1024k count=8 > + $ /sbin/mkfs.ext2 -E root_owner=$UID:0 silly.fs > + $ settrans -c silly /hurd/ext2fs `pwd`/silly.fs > + $ ps -e | grep silly # ext2fs has not started > + $ ls silly > + $ ps -e | grep silly | awk '{ print $6 " " $7 }' > + /hurd/ext2fs /home/joshua/silly.fs > + $ cd silly > + $ echo 'hello' > hello.txt > + $ mkdir silly-dir > + $ cd .. > + $ fsysopts silly > + /hurd/ext2fs --writable --relatime --no-inherit-dir-group > /home/joshua/silly.fs > + $ fsysopts silly --readonly # stop writes to the filesystem > + $ fsysopts silly --writable # let writes again > + > +Try to make the filesystem read-only with fsysopts. Note how further > +write attempts fail now. Try to kill the active translator with > +settrans -g. > + > +You could go crazy even! Why not make something like this: > + > + ~/silly <--> silly.fs > + | \ > + | \ > + | \ > + | \ > + | \ > + \|/ \/ > + silly1 <-> silly1.fs > + ... > + > + /hurd/joshua/silly/silly1/silly2/silly3/silly4 > + > +Each sillyN is another ext2fs filesystem! Make sure that as N gets > +bigger sillyN.fs gets smaller. Let us know in the `#hurd` [irc > +channel](https://web.libera.chat/) how "silly" you are. :) > + > +The current record is 2! > + > + $ ps -e | grep silly | awk '{print $6 " " $7}' > + /hurd/ext2fs /home/joshua/silly.fs > + /hurd/ext2fs /home/joshua/silly/silly1.fs > + > +What is the limit? How many nested ext2fs translators can you have? > +You could have 32 ["silly" > +directories](https://logs.guix.gnu.org/hurd/2024-05-31.log#005021). > +That's very silly! > + > ### Ognyan's Work to allow ext2 to surpass the 2 GiB limit > > * Ognyan Kulev, [[*Supporting Large ext2 File Systems in the > diff --git a/open_issues/64-bit_port.mdwn b/open_issues/64-bit_port.mdwn > index 77b0632e..75756199 100644 > --- a/open_issues/64-bit_port.mdwn > +++ b/open_issues/64-bit_port.mdwn > @@ -86,7 +86,7 @@ To make a bootable system we really better make the disk > image partitioned, and > # create a new primary partition spanning the whole disk: n p and just > accept the defaults, and finish with w > settrans -ca disk /hurd/storeio -T typed file:disk.img > settrans -ca disk1 /hurd/storeio -T typed part:1:file:disk.img > - /sbin/mke2fs disk1 > + /sbin/mke2fs -E root_owner=$UID:0 disk1 > settrans -ca chroot-hurd-amd64 /hurd/ext2fs disk1 > > (here we assume that fdisk puts the partition at sector 2048, that's indeed > the -- Joshua Branson Sent from the Hurd
