[DragonFlyBSD - Bug #2917] da8: reading primary partition table: error accessing offset 000000000000 for 512

bugtracker-admin at leaf.dragonflybsd.org bugtracker-admin at leaf.dragonflybsd.org
Fri Jun 3 05:20:12 PDT 2016


Issue #2917 has been updated by liweitianux.


Hello, I just tried to boot my ThinkPad X220 (another old laptop of mine) with the same prepared DragonFly USB stick.  However, the same issue occurred on this ThinkPad X220 as that X200, and the boot process hung at the.

On the other hand, I checked the dmesg.boot from the working T450s, and there are many duplicated messages of "boundary check failed" (about 220 times) and "alignment check failed" (about 90 times).  I do not known whether these messages are related to this issue.

* ThinkPad X200 (7457-4AC): Intel Core 2 Duo P8400, Intel GM45+ICH9M
* ThinkPad X220 (4290-LY3): Intel Core i5-2430M, Intel QM67; (no USB3.0 support)
* ThinkPad T450s (20BX): Intel Core i3-5200U, USB3.0

----------------------------------------
Bug #2917: da8: reading primary partition table: error accessing offset 000000000000 for 512
http://bugs.dragonflybsd.org/issues/2917#change-12917

* Author: liweitianux
* Status: New
* Priority: Normal
* Assignee: 
* Category: Driver
* Target version: 
----------------------------------------
Hello,

Recently, I tried to install DragonFly BSD on my old ThinkPad X200 with both the 20160512-snapshot and 4.4.3-release USB image.  However, DragonFly failed to mount root from the USB device.

I enabled the verbose boot, and got the following error message:
----------------------------------------------------------------
(da8:umass-sim0:0:0:0): Request completed with CAM_REQ_CMP_ERR
(da8:umass-sim0:0:0:0): Retrying Command
...
(da8:umass-sim0:0:0:0): error 5
(da8:umass-sim0:0:0:0): Retries Exhausted
da8: reading primary partition table: error accessing offset 000000000000 for 512
Mounting root from ufs:da8s1a
no disk named 'da8s1a'
setrootbyname failed
ffs_mountroot: can't find rootvp
kthread 0xffffffe02050d700 syncer3 has exited
Root mount failed: 6
----------------------------------------------------------------

And there does not exist the 'da8s1a' device when listing:
----------------------------------------------------------------
mountroot> ?
Possibly valid devices for root FS:
 "vn0"  "vn1"  "vn2"  "vn3"  "md0"  "md0s0"  "sg8"  "sg0"  "da8"  "da0"  "da0s1"  "da0s2"  "da0s5"  "da0s6"  "da0s7"  "mapper/control"
----------------------------------------------------------------

I also tried to disable the "xhci" load, but the same issue remained.

On the other hand, I tried to install FreeBSD (11-current) on that laptop and succeeded.  And I can read the same USB device (with the DragonFly image dd'd into it) under FreeBSD (with the "geom_part_bsd64" module loaded).

P.S.:
I noticed there already existed a related bug report #2822 with this similar issue.  But I think this bug may not related with the USB3.0, but very likely due to the CAM, and that bug stalls for a long time.  Therefore I decide to open a new bug report.

It's my pleasure to provide any further information if necessary.


Best regards!
Aly



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