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LVM2/lib/activate dev_manager.c
- From: zkabelac at sourceware dot org
- To: lvm-devel at redhat dot com, lvm2-cvs at sourceware dot org
- Date: 8 Jan 2008 16:47:11 -0000
- Subject: LVM2/lib/activate dev_manager.c
CVSROOT: /cvs/lvm2
Module name: LVM2
Changes by: zkabelac@sourceware.org 2008-01-08 16:47:10
Modified files:
lib/activate : dev_manager.c
Log message:
readahead at least twice the strip size (same as raid0 driver does)
Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/activate/dev_manager.c.diff?cvsroot=lvm2&r1=1.131&r2=1.132
--- LVM2/lib/activate/dev_manager.c 2007/12/05 19:24:31 1.131
+++ LVM2/lib/activate/dev_manager.c 2008/01/08 16:47:10 1.132
@@ -953,7 +953,8 @@
}
if (read_ahead == DM_READ_AHEAD_AUTO) {
- read_ahead = max_stripe_size;
+ /* we need RA at least twice a whole stripe - see the comment in md/raid0.c */
+ read_ahead = max_stripe_size * 2;
read_ahead_flags = DM_READ_AHEAD_MINIMUM_FLAG;
}