Date: Thu, 04 Dec 2014 00:47:56 +0000 From: Steven Hartland <killing@multiplay.co.uk> To: Michael Schmiedgen <schmiedgen@gmx.net>, freebsd-stable@freebsd.org Subject: Re: ZFS 'mount error 5' hits production server Message-ID: <547FAF3C.5080002@multiplay.co.uk> In-Reply-To: <547FA5A9.1010600@gmx.net> References: <547F6E54.5020706@takwa.de> <547F98AF.9070701@multiplay.co.uk> <547FA5A9.1010600@gmx.net>
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Unfortunately error 5 isn't very helpful as that's just EIO :(
When booted from the old kernel try moving out the cache file e.g.
mv /boot/zfs/zpool.cache /boot/zfs/zpool.cache.old
If for some reason your cache file and your disks are out of sync that
might help.
Also ensure your loading zfs in /etc/rc.conf
zfs_enable="YES"
Check you don't have anything zfs custom in /boot/loader.conf
You should just have the two zfs related lines such as:
zfs_load="YES"
vfs.root.mountfrom="zfs:tank/root"
Your pool layout does look a little odd from your zpool get all as
bootfs seems to be set to just "tank" is that correct as its quite none
standard? If not and your root is tank/root then that might also be your
issue.
Next up there should be no need for mountpoint legacy / should do just fine.
If you do have a single partition install you might want to consider
switching to something more standard which looks something like:
NAME USED AVAIL REFER MOUNTPOINT
tank 853G 292G 46.5K none
tank/root 21.6G 292G 21.3G /
tank/root/tmp 11.2M 292G 11.2M /tmp
tank/root/var 270M 292G 270M /var
Oh and ensure your boot loader has been updated:
gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 ada0
gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 ada1
Hope this helps.
Regards
Steve
On 04/12/2014 00:07, Michael Schmiedgen wrote:
> On 12/04/2014 00:11, Steven Hartland wrote:
>> Have you been able to boot from rescue / mfsroot cd?
>
> I got remote console via KVM and booted kernel.old
> from loader prompt. Everythins is fine with old 10.0
> kernel. Finished upgrading by installing 10.1 userland
> did not help either.
>
> Thanks,
> Michael
>
>> On 03/12/2014 20:11, Michael Schmiedgen wrote:
>>> Hi list,
>>>
>>> today I upgraded one of our servers from 10.0 to 10.1 with
>>> freebsd-update. GENERIC kernel, ZFS 2-way mirror, GPT, nothing
>>> special. After booting kernel, when trying to mount the
>>> root file system I get: 'cannot mount, error 5' or something.
>>>
>>> Strangely I got this error a few weeks ago at home, running
>>> CURRENT with custom kernel:
>>> https://lists.freebsd.org/pipermail/freebsd-current/2014-October/052900.html
>>>
>>>
>>>
>>> I created the pools and datasets manually via console. Has
>>> anything changed? With legacy mountpoint, or that one needs a
>>> boot dataset, or something?
>>>
>>> Thanks,
>>> Michael
>>>
>>>
>>> Configuration is:
>>>
>>> gpart show:
>>>
>>> => 34 5860533101 ada0 GPT (2.7T)
>>> 34 256 1 freebsd-boot (128K)
>>> 290 6 - free - (3.0K)
>>> 296 8388608 2 freebsd-swap (4.0G)
>>> 8388904 5662310400 3 freebsd-zfs (2.6T)
>>> 5670699304 189833831 - free - (91G)
>>>
>>> => 34 5860533101 ada1 GPT (2.7T)
>>> 34 256 1 freebsd-boot (128K)
>>> 290 6 - free - (3.0K)
>>> 296 8388608 2 freebsd-swap (4.0G)
>>> 8388904 5662310400 3 freebsd-zfs (2.6T)
>>> 5670699304 189833831 - free - (91G)
>>>
>>>
>>> zpool status:
>>>
>>> NAME PROPERTY VALUE SOURCE
>>> tank size 2.62T -
>>> tank capacity 3% -
>>> tank altroot - default
>>> tank health ONLINE -
>>> tank guid XXX default
>>> tank version - default
>>> tank bootfs tank local
>>> tank delegation on default
>>> tank autoreplace off default
>>> tank cachefile - default
>>> tank failmode wait default
>>> tank listsnapshots off default
>>> tank autoexpand off default
>>> tank dedupditto 0 default
>>> tank dedupratio 1.00x -
>>> tank free 2.53T -
>>> tank allocated 99.0G -
>>> tank readonly off -
>>> tank comment - default
>>> tank expandsize 0 -
>>> tank freeing 0 default
>>> tank fragmentation 0% default
>>> tank leaked 0 default
>>> tank feature@async_destroy enabled local
>>> tank feature@empty_bpobj active local
>>> tank feature@lz4_compress enabled local
>>> tank feature@multi_vdev_crash_dump enabled local
>>> tank feature@spacemap_histogram disabled local
>>> tank feature@enabled_txg disabled local
>>> tank feature@hole_birth disabled local
>>> tank feature@extensible_dataset disabled local
>>> tank feature@embedded_data disabled local
>>> tank feature@bookmarks disabled local
>>> tank feature@filesystem_limits disabled local
>>>
>>>
>>> zfs get all tank:
>>>
>>> NAME PROPERTY VALUE SOURCE
>>> tank type filesystem -
>>> tank creation Aug 2012 -
>>> tank used 98.9G -
>>> tank available 2.49T -
>>> tank referenced 8.34G -
>>> tank compressratio 1.00x -
>>> tank mounted yes -
>>> tank quota none default
>>> tank reservation none default
>>> tank recordsize 128K default
>>> tank mountpoint legacy local
>>> tank sharenfs off default
>>> tank checksum on default
>>> tank compression off default
>>> tank atime off local
>>> tank devices on default
>>> tank exec on default
>>> tank setuid on default
>>> tank readonly off default
>>> tank jailed off default
>>> tank snapdir hidden default
>>> tank aclmode discard default
>>> tank aclinherit restricted default
>>> tank canmount on default
>>> tank xattr off temporary
>>> tank copies 1 default
>>> tank version 5 -
>>> tank utf8only off -
>>> tank normalization none -
>>> tank casesensitivity sensitive -
>>> tank vscan off default
>>> tank nbmand off default
>>> tank sharesmb off default
>>> tank refquota none default
>>> tank refreservation none default
>>> tank primarycache all default
>>> tank secondarycache all default
>>> tank usedbysnapshots 4.53G -
>>> tank usedbydataset 8.34G -
>>> tank usedbychildren 86.1G -
>>> tank usedbyrefreservation 0 -
>>> tank logbias latency default
>>> tank dedup off default
>>> tank mlslabel -
>>> tank sync standard default
>>> tank refcompressratio 1.00x -
>>> tank written 3.10G -
>>> tank logicalused 91.7G -
>>> tank logicalreferenced 6.71G -
>>> tank volmode default default
>>> tank filesystem_limit none default
>>> tank snapshot_limit none default
>>> tank filesystem_count none default
>>> tank snapshot_count none default
>>> tank redundant_metadata all default
>
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