livenet rootfs handle compressed live image

[williamjoy]

Hi , I have verified that livenet with a rootfs with ext2 format works well, it use curl to download real rootfs.

Can you add a feature to detect if compressed image? if yes , add a decompress step before switching root.

Thank you!

[williamjoy]

not sure why it does not gzip decompress it. it is a valid gzip image.

dracut:/run/initramfs# det_archive /tmp/curl_fetch_url0/rootfs.gz 
gzip

dracut:/run/initramfs# dmesg |grep error -i
<31>dracut: ///lib/url-lib.sh@57(source): curl_args='--globoff --location --retry 3 --fail --show-error'
<31>dracut: //lib/url-lib.sh@57(): curl_args='--globoff --location --retry 3 --fail --show-error'
<31>dracut: //lib/url-lib.sh@70(curl_fetch_url): curl --globoff --location --retry 3 --fail --show-error --remote-name http://10.16.1.54/cobbler/images/CentOS6-Diskless/rootfs.gz
dracut:/run/initramfs# dmesg |grep warn -i
<31>dracut: //lib/dracut-lib.sh@902(wait_for_dev): printf 'warn ""%s" does not exist"n' /dev/root
<31>dracut: losetup: /tmp/curl_fetch_url0/rootfs.gz: warning: file does not fit into a 512-byte sector the end of the file will be ignored.
<28>dracut Warning: Can't mount root filesystem
<31>dracut: /lib/dracut-lib.sh@1078(emergency_shell): warn 'Can'''t mount root filesystem'
<31>dracut: /lib/dracut-lib.sh@55(warn): check_quiet
<31>dracut: /lib/dracut-lib.sh@56(warn): echo '<28>dracut Warning: Can'''t mount root filesystem'
<31>dracut: /lib/dracut-lib.sh@57(warn): echo 'dracut Warning: Can'''t mount root filesystem'
<31>dracut: dracut Warning: Can't mount root filesystem

[williamjoy]

This is a workaround,
https://github.com/williamjoy/dracut/commit/0d905a33bf332269d0858f4b365453b3fcd2aa5d

need to add feature to img-lib.sh to support ext2/ext3/... format filesystem compressed image

[williamjoy]

http://test-cobbler/cobbler/ks_mirror/CentOS5_Diskless_test/rootfs.tgz
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  268M  100  268M    0     0   111M      0  0:00:02  0:00:02 --:--:--  111M
squashfs: version 4.0 (2009/01/31) Phillip Lougher
Unpacking live filesystem (may take some time)
<30>dracut: Mounted root filesystem /dev/mapper/live-rw
<30>dracut: Switching root
INIT: version 2.86 boo      Welcome to  CentOS release 5.10 (Final