Messages in this thread | | | Date | Thu, 4 Feb 1999 16:22:49 GMT | From | "Stephen C. Tweedie" <> | Subject | Re: What is max size of ext2fs? |
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Hi,
On Mon, 01 Feb 1999 19:35:28 MET, Heinz Mauelshagen <mauelsha@ez-darmstadt.telekom.de> said:
> Sorry, i can't share your point of view.
> The LVM is able to handle that. > The Logical Volume block device specials can be searched/read/written > from user space by llseek() etc.
> The LVM extensions to ll_rw_block() in linux/drivers/block/ll_rw_blk.c > (see <http://linux.msede.com/lvm>) allow that and fs creation with > larger fs sizes than 2GB.
Arg --- typo in my reply. I _meant_ to write "The block device layer has a hard upper limit of 2GB. It doesn't matter which block device you use." The point still stands: just using an LVM or MD device does nothing to increase the maximum size of a block device, because all you end up doing is creating another virtual block device. If I have a RAID cabinet pretending to be a single big SCSI device, then LVM cannot possibly increase the upper limit on that device's size.
> BTW: why didn't your great dirty/free list patch for linux/fs/buffer.c > improving performance with large buffermem make it into 2.2.1?
Because 2.2.1 was for critical bugfixes only; I'm queueing it for 2.2.2.
--Stephen
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