Date: Mon, 22 Oct 2012 12:30:02 +1100 From: =?ISO-8859-1?Q?J=FCrgen_Weber?= <jurgen.weber@theiconic.com.au> To: freebsd-fs@freebsd.org Subject: Re: mfi0 timeout error zfs boot mount problem Message-ID: <5084A19A.5050905@theiconic.com.au> In-Reply-To: <508471E0.9010805@theiconic.com.au> References: <508090E8.4010300@theiconic.com.au> <5081CE05.1010108@theiconic.com.au> <50830EA3.6020001@theiconic.com.au> <508471E0.9010805@theiconic.com.au>
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Some more updates! on the bootloader I have also tried: kern.maxfiles=5000000 kern.maxvnodes=5000000 I have also gone into the Card settings BIOS and changed under advanced settings "Forward Read" to "none". Now the systems gets to "Trying to mount root from zfs:tank/root []..... " and then after maybe 1 to 5 minutes the next couple of lines load like its working! eg: "Setting hostuuid: xxxxx" "Setting hostid: xxxxxx" "Entropy harvesting:interrupts ethernet point_to_point kickstart" "Starting file system checks:" "Mounting local file systems:." and stops. I have had the machine on my desk all morning observing it and I can see the disk access is going crazy,, it is doing something. I have found this article: http://constantin.glez.de/blog/2011/07/zfs-dedupe-or-not-dedupe I have a 15TB file system which has dedup on from the start (10TB. I feel its trying to load the DDT and its going to swap/there is not enough RAM (only have 16GB's). Hopefully my 64GB RAM upgrade is enough. Thanks Jurgen On 22/10/12 09:06, Jürgen Weber wrote: > This is still a problem for me, is anyone there? :) > > I have tried the following at the bootime loader. > > vfs.zfs.zil_disable="1" > vfs.zfs.prefetch_disable="1" > vfs.zfs.txg.timeout="5" > > Any other suggestions on how to get this zpool to import and mount again? > > Thanks > > On 21/10/12 07:50, Jurgen Weber wrote: >> Hi >> >> Lastly, is there a way at boot time, some sysctl's or something I can >> set to bring zfs to a minimalistic state? Turn off features, etc to >> get this to mount? >> >> Any ideas appreciated. >> >> Thanks >> >> Jurgen >> On 20/10/2012 9:02 AM, Jurgen Weber wrote: >>> Guys >>> >>> Some more details on this, some insight would be greatly appreciated. >>> >>> As my day wore on trying to get this zpool to import or mount I have >>> learnt a few things. I think over time this issue has came about as >>> more and more data was added to the file systems. >>> >>> Some further details: >>> >>> Its a 8 disk raidz pool that the system boots from as well. The disk >>> are all 2TB. >>> The server has 16GB Of RAM, I notcied the day before this happen the >>> server was struggling with its RAM griding to a halt and dumping its >>> RAM. >>> The issue is not hardware because I found another server (same one) >>> swapped the harddrives out took another 8GB of RAM and I have the >>> same problem. >>> The main data file systems have dedup and gzip compression on. >>> >>> I have booted from open/Oracle Solars 11 adn attempted to import and >>> the Solaris live CD will not import either. In the Solaris system >>> the disk detach from the system. >>> >>> I get the feeling that ZFS is hitting some root limit when >>> attempting to mount and its not finishing the job. >>> >>> Thanks >>> >>> Jurgen >>> >>> On 19/10/2012 10:29 AM, Jürgen Weber wrote: >>>> Team >>>> >>>> I have googled around for a solution and I see a lot of posts about >>>> firmware versions and patches for FreeBSD 8.*. >>>> >>>> I have a FreeBSD 9.1rc1 system, which was beta1 orginally and has >>>> been running for months. >>>> >>>> Now it will not boot, I get the following: >>>> >>>> "Trying to mount root from zfs:tank/root []..... >>>> mfi0: COMMAND 0Xffffff8000cb83530 TIMEOUT AFTER xxx SECONDS >>>> (this just repeats). >>>> >>>> I have not seen this error before during normal runtime, _only_ >>>> during boot. >>>> >>>> Originally when I had the problem I could boot off a USB stick >>>> (9.1beta1 or rc1), run a 'zpool import -f tank' and it would work >>>> on the livecd. Rebooting and the main system would work. >>>> >>>> This time this work around does not work for me. When I am on the >>>> USB stick I can run a 'zpool import' and all of the disk are >>>> recognised, the pool is recognised and the file system is healthy. >>>> >>>> The Card is a H700 PERC, with 12.10.3 firmware in a Dell R515. >>>> Running FreeBSD 9.1-RC1, latest zfs and zpool versions. >>>> >>>> I have tried disabling the cache (mfiutil cache xxx disable). I >>>> have also gone into the Card settings and changed under advanced >>>> settings "adaptive forward read" to "read only". >>>> >>>> Any help, appreciated. >>>> >>>> Thanks >>>> >>> >> > -- Jürgen Weber Systems Engineer IT Infrastructure Team Leader THE ICONIC | E jurgen.weber@theiconic.com.au | www.theiconic.com.au
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