Re: newfs limits? 10TB filesystem max?

From: Eric Anderson <anderson_at_centtech.com>
Date: Thu, 17 Feb 2005 15:20:49 -0600
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


-- 
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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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Received on Thu Feb 17 2005 - 20:20:55 UTC

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