992be351d5
The major change here is to fix up libefi to be linux aware. For the most part this wasn't too hard but there were a few major issues. First off I needed to handle the DKIOCGMEDIAINFO and DKIOCINFO ioctls. There is no direct equivilant for these ioctls under linux. To handle this I added wrapper functions which under Solaris simple call the ioctls. But under Linux dig around the system a little bit getting the needed info to fill in the requested structures. Secondly the efi_ioctl() call was adapted such that under linux it directly read or writes out the partition table. Under Solaris this work was handed off to the kernel via an ioctl. In the efi_write() case we also ensure we prompt the kernel via BLKRRPART to re-scan the new partition table. The libefi generated partition tables are correct but older versions of ~parted-1.8.1 can not read them without a small patch. The kernel and fdisk are able to read them just fine. Thirdly efi_alloc_and_init() which is used by zpool to determine if a device is a 'wholedisk' was updated to be linux aware. This check is performed by using the partition number for the device, which the partition number is 0 on linux it is a 'wholedisk'. However, certain device type such as the loopback and ram disks needed to be excluded because they do not support partitioning. Forthly the zpool command was made symlink aware so it can correctly resolve udev entries such as /dev/disk/by-*/*. This symlinks are fully expanded ensuring all block devices are recognized. When a when a 'wholedisk' block device is detected we now properly write out an efi label and place zfs in the first partition (0th slice). This partition is created 1MiB in to the disk to ensure it is aligned nicely with all high end block devices I'm aware of. This all works for me now but it did take quite a bit of work to get it all sorted out. It would not surprise me if certain special cases were missed so we should keep any eye of for any odd behavior. |
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| libzfs.h | ||
| libzfs_impl.h | ||