Banana pi pro SATA

[Jindrich Fucik]

Franco Ricci franco.ricci at uniroma1.it
Sat Feb 20 09:59:19 UTC 2016

 > After several days I found that problem was HD type.
 > With a rotational HD all works fine.
 > I don't know why.

Hello Franco,

I fave found, that it does not matter you are using disk or not.
Only the fact the disk is attached mean, that you will have troubles 
with reading more files from SD card.
I did small experiment - download last image (same epeerience with 
previous one), boot, and without any modifications start reading files 
from SD. Attached sata ssd have no UFS/FAT partition and no any 
partition is mounted. (my hardware is Banana PI M1)

Here is three examples:
read disk using tar with transfer data to another process (wc) and 
without (to dev/null)

Interesting is, that after successful read, when I'm trying to "halt" 
the computer I'm receiving fantastic error I not understand.

Outputs from my experiment follows.

Jindra

---------------------------------------------
SATA disk attached, but not used:
---------------------------------------------
root at a20:~ # uname -a

FreeBSD a20 11.0-CURRENT FreeBSD 11.0-CURRENT #0 r295683: Wed Feb 17 
05:22:46 UTC 2016 
root at releng2.nyi.freebsd.org:/usr/obj/arm.armv6/usr/src/sys/A20  arm
root at a20:~ # tar cf - /usr | wc

tar: Removing leading '/' from member names
panic: vm_page_insert_after: page already inserted
cpuid = 0
KDB: enter: panic
[ thread pid 679 tid 100084 ]
Stopped at      $d.7:   ldrb    r15, [r15, r15, ror r15]!
db>

---------------------------------------------
root at a20:~ # tar cf /dev/null /usr

tar: Removing leading '/' from member names
panic: vm_page_insert_after: page already inserted
cpuid = 0
KDB: enter: panic
[ thread pid 644 tid 100067 ]
Stopped at      $d.7:   ldrb    r15, [r15, r15, ror r15]!
db>


---------------------------------------------
NO SATA disk attached:
---------------------------------------------

root at a20:~ # uname -a

FreeBSD a20 11.0-CURRENT FreeBSD 11.0-CURRENT #0 r295683: Wed Feb 17 
05:22:46 UTC 2016 
root at releng2.nyi.freebsd.org:/usr/obj/arm.armv6/usr/src/sys/A20  arm
root at a20:~ # tar cf - /usr | wc

tar: Removing leading '/' from member names
  5994501 28169833 716206080
root at a20:~ #
root at a20:~ # halt

Feb 17 05:37:21 a20 halt: halted by root

Feb 17 05:37:21 a20 syslogd: exiting on signal 15

Waiting (max 60 seconds) for system process `vnlru' to stop...done
Waiting (max 60 seconds) for system process `bufdaemon' to stop...done
Waiting (max 60 seconds) for system process `syncer' to stop...
Syncing disks, vnodes remaining...2 1 0 0 done
All buffers synced.
lock order reversal:
  1st 0xc45b3db4 ufs (ufs) @ /usr/src/sys/kern/vfs_mount.c:1222
  2nd 0xc432cc94 syncer (syncer) @ /usr/src/sys/kern/vfs_subr.c:2617
stack backtrace:
lock order reversal:
  1st 0xc45b3b74 ufs (ufs) @ /usr/src/sys/kern/vfs_mount.c:1222
  2nd 0xc45b35d4 devfs (devfs) @ 
/usr/src/sys/fs/msdosfs/msdosfs_vfsops.c:994
stack backtrace:
Uptime: 3m12s

The operating system has halted.
Please press any key to reboot.