mkimage-profiles

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Author	SHA1	Message	Date
Michael Shigorin	3e1fe68a54	syslinux: update rw to use cdrom method, not disk The former approach to handling "LiveCD with sessions" has been to mangle "automatic=method:cdrom" into "automatic=method:disk,label:ALT" within gfxboot so that propagator and make-initrd-propagator would try and discover/create a filesystem labelled "alt-live-storage" on a LiveFlash's free space. Then "live_rw" handling has been unified in make-initrd-propagator (as of 0.18-alt1) to accept any of "label" subparameter or "live_rw" argument to go and create_disk_slice(). Then propagator's cdrom.c has been fixed to actually try sdX1 before sdX (as of 20150306-alt1). And now it's all been tested to verify that: - flash "ro" and "rw" boot is OK - CD-ROM "ro" boot is OK - CD-ROM "rw" boot is fine given that there's a partition labeled "alt-live-storage" elsewhere This is a can of worms indeed :-/ References ~~~~~~~~~~ http://altlinux.org/initrd-propagator * http://altlinux.org/make-initrd-propagator * http://bugzilla.altlinux.org/28289	2015-03-10 00:00:14 +03:00
Michael Shigorin	a0d0be1a71	syslinux: fixed live_rw configuration The initial revision was brilliantly buggy: it is so apparent that cdrom will never be actually used for rw slice that this has evaded my attention rather completely.	2014-01-28 21:25:36 +04:00
Michael Shigorin	429ce58608	added live_rw support There's a need for a separate boot target since persistent storage is way slower than tmpfs indeed; usbflash has a tendency for huge performance drops given simultaneous writes in addition to reads which are the bottleneck already. make-initrd-propagator 0.18 introduced ext4 rw slice, so the corresponding kernel module needs to be included into stage1; see also #28289. NB: not available on x86_64-efi (or hybrid GPT to be strict) due to fragility of the hack being made: parted(8) panics upon seeing that, and good ol' fdisk is unable to treat it. NB: use/live/rw use/rescue/rx use/syslinux/ui/gfxboot are unlikely to play very nice together due to the latter's magic l10n: "session" label is taken by live_rw config snippet and is translated in design-bootloader-source; OTOH "rescue_session" is not.	2013-03-25 14:13:42 +04:00

Author

SHA1

Message

Date

Michael Shigorin

3e1fe68a54

syslinux: update rw to use cdrom method, not disk

The former approach to handling "LiveCD with sessions"
has been to mangle "automatic=method:cdrom" into
"automatic=method:disk,label:ALT*" within gfxboot
so that propagator and make-initrd-propagator would
try and discover/create a filesystem labelled
"alt-live-storage" on a LiveFlash's free space.

Then "live_rw" handling has been unified in
make-initrd-propagator (as of 0.18-alt1) to accept
any of "label" subparameter or "live_rw" argument
to go and create_disk_slice().

Then propagator's cdrom.c has been fixed to actually
try sdX1 before sdX (as of 20150306-alt1).

And now it's all been tested to verify that:
- flash "ro" and "rw" boot is OK
- CD-ROM "ro" boot is OK
- CD-ROM "rw" boot is fine given that there's
  a partition labeled "alt-live-storage" elsewhere

This is a can of worms indeed :-/

References
~~~~~~~~~~
* http://altlinux.org/initrd-propagator
* http://altlinux.org/make-initrd-propagator
* http://bugzilla.altlinux.org/28289

2015-03-10 00:00:14 +03:00

Michael Shigorin

a0d0be1a71

syslinux: fixed live_rw configuration

The initial revision was brilliantly buggy: it is *so* apparent
that cdrom will never be actually used for rw slice that this
has evaded my attention rather completely.

2014-01-28 21:25:36 +04:00

Michael Shigorin

429ce58608

added live_rw support

There's a need for a separate boot target since
persistent storage is way slower than tmpfs indeed;
usbflash has a tendency for huge performance drops
given simultaneous writes in addition to reads which
are the bottleneck already.

make-initrd-propagator 0.18 introduced ext4 rw slice,
so the corresponding kernel module needs to be included
into stage1; see also #28289.

NB: not available on x86_64-efi (or hybrid GPT to be strict)
due to fragility of the hack being made: parted(8) panics
upon seeing that, and good ol' fdisk is unable to treat it.

NB: use/live/rw use/rescue/rx use/syslinux/ui/gfxboot
are unlikely to play very nice together due to the latter's
magic l10n: "session" label is taken by live_rw config snippet
and *is* translated in design-bootloader-source;
OTOH "rescue_session" is *not*.

2013-03-25 14:13:42 +04:00

3 Commits