Date: Thu, 13 Dec 2007 14:55:04 +0100 From: Stefan Esser <se@FreeBSD.org> To: Ivan Voras <ivoras@freebsd.org> Cc: freebsd-stable@freebsd.org Subject: Re: Various Issues with 7.0-BETA4 Message-ID: <476139B8.4040108@FreeBSD.org> In-Reply-To: <fjlu5n$qc4$1@ger.gmane.org> References: <475DADF7.6020702@yahoo.com> <fjlu5n$qc4$1@ger.gmane.org>
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Ivan Voras schrieb:
> Peter Thoenen wrote:
>
>> Issue #1:
>>
>> For some reason zfs_enable="YES" in rc.conf doesn't work. It doesn't
>> seem to auto mount my zfs mounts which is a PITA. Currently I am forces
>> (each time I reboot) to boot into single user mode, mount all my drives,
>> then exit, continuing into multi-user mode. The interesting this is step 3.
>>
>> 1) fsck -p
>> 2) mount -u /
>> 3) zfs
>> 4) zfs mount -a
>> 5) exit
>>
>> NOTE: If I skip #3 and immediately do #4 it mails. For some reason I
>> have to to a straight zfs call.
>>
>> NOTE: If I immediately go to multiuser mode skipping manually mounting
>> not only does zfs not mount but I have to re-force import the tank pool
>> (e.g. step 3.5: zpool import -f tank)
>
> Did you create the zfs structures and file system while in single user
> mode with root mounted read-only? If so, this is a "known feature" and
> it won't be fixed: you need to a) mount root read-write and b) run
> /etc/rc.d/hostid start before /etc/rc.d/zfs start. To fix it, mount root
> read-write, remove zpool.cache file (if any) from /boot/zfs, run
> commands from "b" and then run zfs import -f until you have your zfs
> file systems online. Then reboot into multiuser mode - it should work
> now. Never modify zfs without steps "a" and "b", some combinations of
> such modifications lead to kernel panics or possible data loss.
I just rebuild my world and then kernel based on sources as of a few
hours ago. It had been running well with kernel and world as of Nov 22.,
but fails to mount the ZFS root with the new kernel:
[...]
ZFS filesystem version 6
ZFS storage pool version 6
acd0: CDRW <PHILIPS CD-RW/DVD-ROM SCB5265/TD15> at ata0-master UDMA33
ad4: 76293MB <Maxtor 6L080M0 BANC1G10> at ata2-master SATA150
WARNING: Expected rawoffset 0, found 63
lapic1: Forcing LINT1 to edge trigger
SMP: AP CPU #1 Launched!
Trying to mount root from zfs:root
Manual root filesystem specification:
<fstype>:<device> Mount <device> using filesystem <fstype>
eg. ufs:da0s1a
? List valid disk boot devices
<empty line> Abort manual input
mountroot> zfs:root
Trying to mount root from zfs:root
WARNING: TMPFS is considered to be a highly experimental feature in FreeBSD.
bge0: link state changed to UP
[...]
As you can see, the ZFS root mount succeeds after manual entry of just
the value also specified in /boot/loader.conf. The file "zpool.cache"
has also been stable since initial installation of the system:
$ ls -l /boot/zfs/zpool.cache
-rw-r--r-- 1 root wheel 908 Oct 2 17:33 /boot/zfs/zpool.cache
Is this a regression that occured between 2007-11-22 and 2007-12-13 ?
I know that automatic reboots (including mounting this ZFS root FS)
worked fine with the previous kernel!
I could try to export/import the ZFS pool from my boot file system,
but since this is a productive system, I cannot do this right now ...
Regards, STefan
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