Raspberry Pi stability improved

[Michael Tuexen]

On 18 Jan 2015, at 16:51, Daisuke Aoyama <aoyama at peach.ne.jp> wrote:
> 
> Hi Michael,
> 
> Did you use /etc/rc.d/autosize ("option AutoSize" in crochet-freebsd)?
No, I used (for a year or so) the script from
git://github.com/daveish/freebsd-arm-tools.git
and did a manual resize after the system got up.

But it is now very stable.

Best regards
Michael
> If so, try to disable it and never boot official FreeBSD image before resizing.
> It will break the partition at first boot. It's a trap of the image.
> Personally I didn't use autosize in my images. So not affect all my images.
> 
> The main reason is gpart/fdisk/glabel/glowfs/newfs can't handle mixed geometory.
> Default crochet-freebsd uses CHS=(x,255,63) while creating but mmcsd is not!
> ----------------------------------------------------------------------
> #diskinfo -v mmcsd0
> mmcsd0
>       512             # sectorsize
>       31674335232     # mediasize in bytes (29G)
>       61863936        # mediasize in sectors
>       4194304         # stripesize
>       0               # stripeoffset
>       20              # Cylinders according to firmware.
>       377             # Heads according to firmware.
>       8192            # Sectors according to firmware.   <<< this can't be handled
>       4700C511        # Disk ident.
> ----------------------------------------------------------------------
> This is a reson why I use USB card reader before booting at
> http://lists.freebsd.org/pipermail/freebsd-arm/2015-January/009935.html
> 
> For your reference, here is broken example of official image of
> ftp://ftp.freebsd.org/pub/FreeBSD/snapshots/arm/armv6/ISO-IMAGES/11.0/FreeBSD-11.0-CURRENT-arm-armv6-RPI-B-20150111-r276981.img.bz2
> 
> Before booting via USB card reader:
> --------------------------------------------------------------------------------------
> [root at raspberry-pi ~]# diskinfo -v da0
> da0
>       512             # sectorsize
>       15720251392     # mediasize in bytes (15G)
>       30703616        # mediasize in sectors
>       0               # stripesize
>       0               # stripeoffset
>       1911            # Cylinders according to firmware.
>       255             # Heads according to firmware.
>       63              # Sectors according to firmware.
>                       # Disk ident.
> 
> [root at raspberry-pi ~]# gpart show da0
> =>      63  30703553  da0  MBR  (15G)
>       63     34776    1  !12  [active]  (17M)
>    34839   1918286    2  freebsd  (937M)
>  1953125  28750491       - free -  (14G)
> 
> [root at raspberry-pi ~]# fdisk da0
> ******* Working on device /dev/da0 *******
> parameters extracted from in-core disklabel are:
> cylinders=1911 heads=255 sectors/track=63 (16065 blks/cyl)
> 
> Figures below won't work with BIOS for partitions not in cyl 1
> parameters to be used for BIOS calculations are:
> cylinders=1911 heads=255 sectors/track=63 (16065 blks/cyl)
> 
> Media sector size is 512
> Warning: BIOS sector numbering starts with sector 1
> Information from DOS bootblock is:
> The data for partition 1 is:
> sysid 12 (0x0c),(DOS or Windows 95 with 32 bit FAT (LBA))
>   start 63, size 34776 (16 Meg), flag 80 (active)
>       beg: cyl 0/ head 1/ sector 1;
>       end: cyl 2/ head 42/ sector 63
> The data for partition 2 is:
> sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
>   start 34839, size 1918286 (936 Meg), flag 0
>       beg: cyl 2/ head 43/ sector 1;
>       end: cyl 121/ head 146/ sector 62
> The data for partition 3 is:
> <UNUSED>
> The data for partition 4 is:
> <UNUSED>
> 
> Bootup:
> ----------------------------------------------------------------------
> root at raspberry-pi:~ # uname -a
> FreeBSD raspberry-pi 11.0-CURRENT FreeBSD 11.0-CURRENT #0 r276981: Mon Jan 12 09:04:54 UTC 2015 root at grind.freebsd.org:/usr/obj/arm.armv6/usr/src/sys/RPI-B  arm
> 
> root at raspberry-pi:~ # diskinfo -v mmcsd0
> mmcsd0
>       512             # sectorsize
>       15720251392     # mediasize in bytes (15G)
>       30703616        # mediasize in sectors
>       4194304         # stripesize
>       0               # stripeoffset
>       20              # Cylinders according to firmware.
>       187             # Heads according to firmware.
>       8192            # Sectors according to firmware.
>       DB242AD3        # Disk ident.
> 
> root at raspberry-pi:~ # gpart show
> =>       1  30703615  mmcsd0  MBR  (15G)
>        1        62          - free -  (31K)
>       63     34776       1  !12  [active]  (17M)
>    34839  30668777       2  freebsd  (15G)
> 
> =>       0  30668777  mmcsd0s2  BSD  (15G)
>        0       105            - free -  (53K)
>      105  30668672         1  freebsd-ufs  (15G)
> 
> root at raspberry-pi:~ # fdisk mmcsd0
> ******* Working on device /dev/mmcsd0 *******
> parameters extracted from in-core disklabel are:
> cylinders=20 heads=187 sectors/track=8192 (1531904 blks/cyl)
> 
> Figures below won't work with BIOS for partitions not in cyl 1
> parameters to be used for BIOS calculations are:
> cylinders=20 heads=187 sectors/track=8192 (1531904 blks/cyl)
> 
> Media sector size is 512
> Warning: BIOS sector numbering starts with sector 1
> Information from DOS bootblock is:
> The data for partition 1 is:
> sysid 12 (0x0c),(DOS or Windows 95 with 32 bit FAT (LBA))
>   start 63, size 34776 (16 Meg), flag 80 (active)
>       beg: cyl 0/ head 1/ sector 1;
>       end: cyl 2/ head 42/ sector 63
> The data for partition 2 is:
> sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
>   start 34839, size 30668777 (14974 Meg), flag 0
>       beg: cyl 2/ head 43/ sector 1;
>       end: cyl 20/ head 7/ sector 0     <<< end is shrinked before booting!
> The data for partition 3 is:
> <UNUSED>
> The data for partition 4 is:
> <UNUSED>
> 
> root at raspberry-pi:~ # dumpfs /dev/mmcsd0s2a
> dumpfs: /dev/mmcsd0s2a: could not read superblock to fill out disk
> 
> ## your UFS partition is broken here ##
> ----------------------------------------------------------------------
> 
> Regards,
> -- 
> Daisuke Aoyama
> 
>