Bug 260280

Hey, 

I tried two expand a gpt partition , but I could not get it working with the solution from the handbook. 

https://people.freebsd.org/~rodrigc/doc/handbook/disks-growing.html

The last step 

sharky@freebsd:~ $ sudo growfs /dev/ada0p4
It's strongly recommended to make a backup before growing the file system.
OK to grow filesystem on /dev/ada0p4 from 4.0GB to 47GB? [yes/no] Yes
growfs: /dev/ada0p4: Operation not permitted


What works is this command. 

growfs /dev/gpt/rootfs


sharky@freebsd:~ $ sudo growfs /dev/gpt/rootfs
Device is mounted read-write; resizing will result in temporary write suspension for /.
It's strongly recommended to make a backup before growing the file system.
OK to grow filesystem on /dev/gpt/rootfs, mounted on /, from 4.0GB to 47GB? [yes/no] yes
super-block backups (for fsck_ffs -b #) at:
 8979008, 10261696, 11544384, 12827072, 14109760, 15392448, 16675136, 17957824, 19240512, 20523200, 21805888, 23088576,
 24371264, 25653952, 26936640, 28219328, 29502016, 30784704, 32067392, 33350080, 34632768, 35915456, 37198144, 38480832,
 39763520, 41046208, 42328896, 43611584, 44894272, 46176960, 47459648, 48742336, 50025024, 51307712, 52590400, 53873088,
 55155776, 56438464, 57721152, 59003840, 60286528, 61569216, 62851904, 64134592, 65417280, 66699968, 67982656, 69265344,
 70548032, 71830720, 73113408, 74396096, 75678784, 76961472, 78244160, 79526848, 80809536, 82092224, 83374912, 84657600,
 85940288, 87222976, 88505664, 89788352, 91071040, 92353728, 93636416, 94919104, 96201792, 97484480


I think this should be changed. 

best regards, sebastian