Thread (9 messages) 9 messages, 5 authors, 2010-09-01

Re: [PATCH 2/2] Btrfs-progs: Add hot data support in mkfs

From: Andrey Panin <hidden>
Date: 2010-08-13 13:14:22
Also in: linux-fsdevel, lkml 

On 224, 08 12, 2010 at 05:29:37PM -0500, bchociej@gmail.com wrote:
From: Ben Chociej <redacted>

Modified mkfs.btrfs to add hot data relocation option (-h) which
preallocates BTRFS_BLOCK_GROUP_DATA_SSD and
BTRFS_BLOCK_GROUP_METADATA_SSD at mkfs time for future use by hot data
relocation code.  Also added a userspace function to detect whether a
block device is an SSD by reading the sysfs block queue rotational flag.
IMHO this policy is too inflexible. What if I have large array of slow SATA 
disks and some fast SAS ones ?
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