How do i fsck / on solaris 10

Conversions from ext3 will not fully utilize extents. It simply upgrades the inodes and leaves them as extents of size 1. If you run the files through a program like tar, you might be able to acquire better compressed extents files.

It also matters how you converted from ext3 to ext4; different options have different capabilities and may impact fsck time. Additionally, I think a full drive is going to take longer to fsck; you're checking some 200GB worth of data after all, and probably tripled the size inodes take up.

What you might do is file a bug with the distribution who built the kernel you're using, or the kernel bugzilla directly. This is the sort of behavior that upstream is interested in diagnosing and fixing, after all.

If all you want to do is avoid an fsck, adding the -f option to shutdown should help with that. shutdown -F to force fsck.

tune2fs -l /dev/foo will tell you the interesting bits of information.

Here's a start at extracting just what you need:

mount -l -t ext3,ext2 | cut -d' ' -f1 | xargs -n1 tune2fs -l | egrep -i 'state|mount|check'

If the "Next check after" date is in the past, there will be an fsck.

If the filesystem state is not clean, there will be an fsck. (this could also happen if there's a problem with the system during reboot/shutdown that prevents a clean unmount)

If the mount count has reached the maximum mount count, there will be an fsck.