On Fri, May 18, 2007 at 10:15:46PM -0700, Matthew Dillon wrote:
>
> :I'm a long-time follower of HEAD, but I admit I don't understand the
> :implications of your warning.
> :
> :If I build world+kernel now, what kind of tasks should I expect to have
> :trouble with?
> :
> :To be specific, I'm running DF from an extended partition (a bit out
> :of the ordinary) /dev/ad1s9a. Should I expect problems if I update
> :just now?
> :
> :Thanks!
>
> Well. I've done my best to test things so hopefully nobody will get
> blown up. I did test a simple extended partition so it should be ok.
>
> But, it might be a good idea to do a backup first, just in case. I am
> messing with the low level disk partitioning code after all!
>
> Here's what I would do.
>
> * cp /kernel /kernel.bak
>
> * buildkernel blah blah, installkernel blah blah, reboot
>
> It should be able to reboot, the mount device minors don't change,
> only the master raw device and the slice devices, so the new kernel
> should be able to mount everything up even though the devices in /dev
> haven't been upgraded yet.
>
> If it reboots and mounts the hard disks ok, try the rest of the update.
>
> * buildworld, installworld, make upgrade
>
> * I don't think make upgrade will go that deep into the disk devices,
> so after you make upgrade you will have to finish adding the devices
> manually. Here's a cute trick:
>
> cd /dev
> ./MAKEDEV ad*s*a
>
> I still have a bunch more to do. Only one major piece left that can
> potentially blow things up, but after that the disklabel will be
> disconnected enough from the disk management code that I can abstract
> it out into a pluggable API and start working on GPT.
As you expected, my ccd partitions(/var/obj and /home) no longer mount.
Do I need to dump & restore filesystems on a ccd device after the changes
to ccd device?
Anyway, here's my /etc/ccd.conf:
ccd0 1152 none /dev/ad0s1e /dev/ad1s1e
ccd1 16 CCDF_MIRROR,CCDF_UNIFORM /dev/ad0s1g /dev/ad1s1g
and /etc/fstab:
/dev/ad0s1b none swap sw 0 0
/dev/ad1s1b none swap sw 0 0
/dev/ad0s1h / ufs rw 1 2
/dev/ad0s1a /D ufs rw,noauto 1 1
/dev/ad1s1d /var ufs rw 2 1
/dev/ad0s1f /u ufs rw 2 3
/dev/ccd0a /var/obj ufs rw 2 4
/dev/ccd1a /home ufs rw 2 5
/dev/ad1s1f /home/source ufs rw 2 2
/dev/acd0c /cdrom cd9660 ro,noauto 0 0
proc /proc procfs rw 0 0
and the boot message relavant to CCD configuration (some of the message
from fsck are mixed up because it thinks ccd0 and ccd1 are diffent devices?):
Configuring CCD devices.
ccdconfig: open: /dev/ccd0: Invalid argument
ccdconfig: open: /dev/ccd1: Invalid argument
ad1s1: type 0xa5, start 63, end = 117226304, size 117226242 : OK
swapon: adding /dev/ad1s1b as swap device
Starting file system checks:
/dev/ad0s1a: FILESYSTEM CLEAN; SKIPPING CHECKS
/dev/ad0s1a: clean, 197090 free (3930 frags, 24145 blocks, 0.8% fragmentation)
/dev/ad0s1d: FILESYSTEM CLEAN; SKIPPING CHECKS
/dev/ad0s1d: clean, 463893 free (325 frags, 57946 blocks, 0.1% fragmentation)
ccd0t127: reading primary partition table: error writing offset 000000000000
for 512
ccd1t127: reading primary partition table: error writing offset 000000000000
for 512
Can't open /dev/ccd0a: Input/output error
Can't open /dev/ccd1a: Input/output error
/dev/ccd0a: /dev/ccd1a: CAN'T CHECK FILE SYSTEM.CAN'T CHECK FILE SYSTEM.
/dev/ccd1a: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY.
/dev/ccd0a: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY.
/dev/ad0s1h: FILESYSTEM CLEAN; SKIPPING CHECKS
/dev/ad0s1h: clean, 202415 free (4151 frags, 24783 blocks, 0.8% fragmentation)
/dev/ad1s1f: FILESYSTEM CLEAN; SKIPPING CHECKS
/dev/ad1s1f: clean, 4980795 free (240339 frags, 592557 blocks, 3.0%
fragmentation)
/dev/ad0s1f: FILESYSTEM CLEAN; SKIPPING CHECKS
/dev/ad0s1f: clean, 5801971 free (19355 frags, 722827 blocks, 0.3%
fragmentation)
THE FOLLOWING FILE SYSTEMS HAD AN UNEXPECTED INCONSISTENCY;
/dev/ccd1a (/home), /dev/ccd0a (/var/obj)
I haven't seen any other issues. I can post any other information on request.
Cheers.
