|
|
 |
 |
 |
 |
 |
 |
|
|
|
From: June Mullins (junemullins, earthlink dot net) Date: 2001.11.07 - 15.16 MST
Kevin's note says Reiser is limited by page cache to 17592 GB on
systems with 32 bit
addressing (presumably because Reiser uses 4k blocks). Isn't that about
17TB, or am I misreading
the digits? And the LVM and block layer fixes, which are below us,
allow a logical volume
to be > 2TB, which it must be to accomodate the larger file system. But
I don't know what else
is involved.
June
Perry and Lorae Merritt wrote:
> Since I'm pretty sure the block layer is below us and since we're dealing
> with physical devices that are less than a TB, why would we apply fixes to
> the block layer?
>
> I guess what we really need to know is how is LVM called from above? What is
> the data structure that is passed? I guess this is another reason for me to
> have a linux box here, or at least the source code. ;-)
>
> In the old days, on AIX, the block driver was passed a structure called a
> buf structure. That structure had the device stuff in it for the IO. It
> contained the mem address of where to put/get the data, which device it was
> on, and the offset on the device. Does Linux use a similar mechanism?
>
> P
>
> ----- Original Message -----
> From: "June Mullins" <junemullins, earthlink dot net>
> To: <antera, cryptofreak dot org>
> Sent: Tuesday, November 06, 2001 2:09 PM
> Subject: Re: terabyte limit
>
>
>> So, from the note, it sounds like we would just have to apply the 64 bit
>> patch to
>> the generic block layer (and to lvm, if we wind up using it) to get
>> around the 1 or
>> 2 Tb limit. However see the link in the referenced note to the next
>> note about
>> LVM extent size - that might be something to worry about if we use lvm
>> rather than roll our own.
>>
>>
>>
>> June
>>
>>
>> Don jessup wrote:
>>
>>> Here is a link to some information on the limit
>>> size.
>>> http://lists.sistina.com/pipermail/linux-lvm/2001-September/008678.html
>>>
>>>
>>> __________________________________________________
>>> Do You Yahoo!?
>>> Find a job, post your resume.
>>> http://careers.yahoo.com
>>> --
>>> This is the antera mailing list. To unsubscribe, email
>>> majordomo, cryptofreak dot org with message body `unsubscribe antera'.
>>> Or, for more information, visit http://www.cryptofreak.org/.
>>>
>>>
>> --
>> This is the antera mailing list. To unsubscribe, email
>> majordomo, cryptofreak dot org with message body `unsubscribe antera'.
>> Or, for more information, visit http://www.cryptofreak.org/.
>>
>
> --
> This is the antera mailing list. To unsubscribe, email
> majordomo, cryptofreak dot org with message body `unsubscribe antera'.
> Or, for more information, visit http://www.cryptofreak.org/.
>
>
--
This is the antera mailing list. To unsubscribe, email
majordomo, cryptofreak dot org with message body `unsubscribe antera'.
Or, for more information, visit http://www.cryptofreak.org/.
This archive was generated by hypermail 2b30 : 2001.11.08 - 04.02 MST |
