On 18 December 2013 15:14, Miquel van Smoorenburg <[email protected]> wrote: > On 02/12/13 10:59, Dmitrijs Ledkovs wrote: >> >> Hello Miquel, >> >> On 31 January 2013 12:40, Miquel van Smoorenburg <[email protected]> >> wrote: >>> >>> This is by far the most intrusive patch - all the others are trivial. >>> Description: >>> >>> - move make_device_map() upwards so that we can call it earlier >>> in the script. Also, if $md_bootdev is set, add a (otherwise >>> unused) "(md/0)" entry to device.map - otherwise grub-probe >>> freaks out on upgrades. >>> - add is_mdraid_bootable(). It checks if the device is a Intel >>> Matrix Raid device, in RAID1 mode. If not it returns false. >>> Otherwise it sets $md_dev, $md_devs, $md_super and $md_level, >>> and returns true. >> >> >> >> Why is it limited to only imsm && raid1 ? > > > Because it's the only thing I could test, and at the time ddf support was > kind of wonky. So I thought it best to leave that out. >
true ddf support has improved a lot in mdadm 3.3 > Also, only RAID1 is because I could not get grub to install on the MD > device- it didn't accept that. And for example, grub-mkdevicemap doesn't > create an entry for /dev/md... yet. So right now the code finds the devices > underlying the RAID1 array and installs grub on all of them. > > Someone needs to fix grub so that it understands MD devices directly. Or the > current version might already do that, I haven't checked in a while. > yeah, trunk snapshots of grub2 properly understand isms/ddf and know that those raid arrays are recognizable by boot-firmware (bios/uefi) and hence allows to install direct on-to them without any other adjustments. I haven't tested yet, but i think some grub-installer changes will be needed to detect that as well, but it should be done differently, i.e. without stub entries in device.map > >> mdadm supports "imsm" superblock format levels 0,1,5,10 & "ddf" >> superblock format levels 0,1,3,4,5,1E,5E,5EE,6 with extensions of >> there off (stripped, mirrored, concatenated and spanned). >> >> Would it not be best to simply check for "imsm" || "ddf" superblock >> types? Given that mdadm supports most of the above RAID levels. > > > Sure. Ack, thanks. I'll work on uploading all the other patches, and will work on improving grub-installer/imsm&ddf inter operability based on upstream grub2 snapshot. -- Regards, Dimitri. -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/CANBHLUg2p-KS1KjF7zA-BKK5BvfkB2NMbtCMb3B=unt53z_...@mail.gmail.com
