Aneesh Kumar K.V wrote: > Hi, > > I am getting this even with the latest patch queue. The test program is > a modified fsstress with fallocate support. > > mpage_da_map_blocks block allocation failed for inode 377954 at logical > offset 313 with max blocks 4 with error -28 > mpage_da_map_blocks block allocation failed for inode 336367 at logical > offset 74 with max blocks 9 with error -28 > mpage_da_map_blocks block allocation failed for inode 345560 at logical > offset 542 with max blocks 7 with error -28 > This should not happen.!! Data will be lost > mpage_da_map_blocks block allocation failed for inode 355317 at logical > offset 152 with max blocks 10 with error -28 > This should not happen.!! Data will be lost > mpage_da_map_blocks block allocation failed for inode 395261 at logical > offset 462 with max blocks 1 with error -28 > This should not happen.!! Data will be lost > mpage_da_map_blocks block allocation failed for inode 323784 at logical > offset 313 with max blocks 11 with error -28 > This should not happen.!! Data will be lost So, I really need to un-bury myself and read this thread more carefully, but: It may be interesting to look at what XFS did for this sort of problem a couple of years ago. -Eric From: David Chinner <dgc@xxxxxxx> Date: Tue, 14 Mar 2006 02:13:09 +0000 (+1100) Subject: [XFS] On machines with more than 8 cpus, when running parallel I/O X-Git-Tag: v2.6.17-rc1~1000^2~69 X-Git-Url: X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=8d280b98cfe3c0b69c37d355218975c1c0279bb0 [XFS] On machines with more than 8 cpus, when running parallel I/O threads, the incore superblock lock becomes the limiting factor for buffered write throughput. Make the contended fields in the incore superblock use per-cpu counters so that there is no global lock to limit scalability. SGI-PV: 946630 SGI-Modid: xfs-linux-melb:xfs-kern:25106a Signed-off-by: David Chinner <dgc@xxxxxxx> Signed-off-by: Nathan Scott <nathans@xxxxxxx> -Eric -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
