newfs limits? 10TB filesystem max?
Eric Anderson
anderson at centtech.com
Thu Feb 17 21:45:03 GMT 2005
Chad Leigh -- Shire.Net LLC wrote:
>
> On Feb 17, 2005, at 2:20 PM, Eric Anderson wrote:
>
>> Brooks Davis wrote:
>>
>>> On Thu, Feb 17, 2005 at 01:49:12PM -0600, Eric Anderson wrote:
>>>
>>>> Brooks Davis wrote:
>>>> [..snip..]
>>>>
>>>>>>>>>> I've just built an enormous 10TB filesystem. When
>>>>>>>>>> trying to newfs the disk, it bombed with something
>>>>>>>>>> like "cannot allocate memory" after something like
>>>>>>>>>> 23xxxxxxxxx sectors.. I noticed disklabel complains
>>>>>>>>>> about disks with more than 2^32-1 sectors not being
>>>>>>>>>> supported..
>>>>
>>>>
>>>> [..snip..]
>>>>
>>>>> In that case, you probably don't actually have a bsdlabel there. It's
>>>>> not longer required with geom since you can newfs disks.
>>>>>
>>>>> -- Brooks
>>>>>
>>>>
>>>> Ok - but I'm still wondering why newfs can't newfs.. Here's the real
>>>> error pasted in:
>>>>
>>>> a newfs -U /dev/vinum/plex/raid.p0 gives:
>>>> ...
>>>> 23425543840, 23425920160, 23426296480, 23426672800, 23427049120,
>>>> 23427425440, 23427801760, 23428178080, 23428554400, 23428930720,
>>>> 23429307040, 23429683360, 23430059680, 23430436000, 23430812320,
>>>> 23431188640, 23431564960, 23431941280, 23432317600, 23432693920,
>>>> 23433070240, 23433446560, 23433822880, 23434199200, 23434575520,
>>>> 23434951840, 23435328160, 23435704480, 23436080800, 23436457120,
>>>> 23436833440, 23437209760, 23437586080, 23437962400,
>>>> 23438338720,newfs: wtfs: 65536 bytes at sector 23438715040: Cannot
>>>> allocate memory
>>>>
>>>> But:
>>>> newfs -U -s 23438338720 /dev/vinum/plex/raid.p0 works.. So I'm
>>>> losing the last part of my partition..
>>>
>>> I'm guessing you are hitting the process datasize limit with newfs. You
>>> should be able to raise it a bit from the default. Be warned, that fsck
>>> has much higher memory requirements so recovery may be difficult if not
>>> impossiable without a 64-bit machine.
>>
>>
>> During the newfs, the process only uses 2424K of memory (1825K
>> resident). I have several hundred MB of memory free the whole time,
>> through and after the newfs.
>>
>> Eric
>>
>
> check the *process limits* is what Brooks was suggesting. Not the
> system actual resources...
> best
> Chad
Well, I guess I'm wondering how it could be hitting any limit? Which limit would I be looking at, if it's memory usage is so low.. Sorry if I'm missing something here, but it just doesn't seem evident that a process could be hitting a limit, if it isn't showing anything close in ps output or top..
Eric
--
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Eric Anderson Sr. Systems Administrator Centaur Technology
I have seen the future and it is just like the present, only longer.
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