Author: mckusick
Date: Fri Jan 17 16:29:57 2014
New Revision: 260829
URL: http://svnweb.freebsd.org/changeset/base/260829
Log:
MFC of 260088:
Fine tune filesystem block allocations under low free-space
conditions (-r254995) based on further operational experience.
Submitted by: Dmitry Sivachenko
Fix Tested by: Dmitry Sivachenko
Modified:
stable/9/sys/ufs/ffs/ffs_alloc.c
Directory Properties:
stable/9/sys/ (props changed)
Modified: stable/9/sys/ufs/ffs/ffs_alloc.c
==============================================================================
--- stable/9/sys/ufs/ffs/ffs_alloc.c Fri Jan 17 16:22:10 2014
(r260828)
+++ stable/9/sys/ufs/ffs/ffs_alloc.c Fri Jan 17 16:29:57 2014
(r260829)
@@ -517,12 +517,12 @@ ffs_reallocblks_ufs1(ap)
fs = ip->i_fs;
ump = ip->i_ump;
/*
- * If we are not tracking block clusters or if we have less than 2%
+ * If we are not tracking block clusters or if we have less than 4%
* free blocks left, then do not attempt to cluster. Running with
* less than 5% free block reserve is not recommended and those that
* choose to do so do not expect to have good file layout.
*/
- if (fs->fs_contigsumsize <= 0 || freespace(fs, 2) < 0)
+ if (fs->fs_contigsumsize <= 0 || freespace(fs, 4) < 0)
return (ENOSPC);
buflist = ap->a_buflist;
len = buflist->bs_nchildren;
@@ -743,12 +743,12 @@ ffs_reallocblks_ufs2(ap)
fs = ip->i_fs;
ump = ip->i_ump;
/*
- * If we are not tracking block clusters or if we have less than 2%
+ * If we are not tracking block clusters or if we have less than 4%
* free blocks left, then do not attempt to cluster. Running with
* less than 5% free block reserve is not recommended and those that
* choose to do so do not expect to have good file layout.
*/
- if (fs->fs_contigsumsize <= 0 || freespace(fs, 2) < 0)
+ if (fs->fs_contigsumsize <= 0 || freespace(fs, 4) < 0)
return (ENOSPC);
buflist = ap->a_buflist;
len = buflist->bs_nchildren;
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