https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=211028
--- Comment #13 from Dexuan Cui <de...@microsoft.com> ---
(In reply to Edward Tomasz Napierala from comment #11)
With kern.geom.debugflags=253 (log everything except G_T_BIO) and
debug.bootverbose=1, after the disk capacity was changed from 180GB to 200GB, I
got the below when running "dd if=/dev/da1 of=tmp bs=512 count=1":
g_dev_open(da1, 1, 8192, 0xfffff80004433500)
g_access(0xfffff80003faba00(da1), 1, 0, 0)
open delta:[r1w0e0] old:[r0w0e0] provider:[r0w0e0] 0xfffff80003d19c00(da1)
g_disk_access(da1, 1, 0, 0)
(da1:storvsc1:0:0:0): storvsc scsi_status = 2
(da1:storvsc1:0:0:0): Capacity data has changed
g_post_event_x(0xffffffff80996f40, 0xfffff800043fd800, 1, 0)
(da1:storvsc1:0:0:0): storvsc skips the validation for short inquiry (6) [0 b2
0 4 1]
(da1:storvsc1:0:0:0): storvsc skips the validation for short inquiry (5) [0 b0
0 3c 0]
(da1:storvsc1:0:0:0): storvsc skips the validation for short inquiry (5) [0 b1
0 3c 0]
g_dev_close(da1, 131073, 8192, 0xfffff80004433500)
g_access(0xfffff80003faba00(da1), -1, 0, 0)
open delta:[r-1w0e0] old:[r1w0e0] provider:[r1w0e0] 0xfffff80003d19c00(da1)
g_disk_access(da1, -1, 0, 0)
Next, gpart can't show the new free space:
[root@decui-b11 ~/bsd.git/sys]# gpart show da1
=> 63 377487297 da1 MBR (200G)
63 377487297 - free - (180G)
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