kernel February 2017

kernel@lists.fedoraproject.org

9 participants
12 discussions

RAID10 - writemostly don't work that proper
by Reindl Harald 11 Feb '17

11 Feb '17

/dev/sda: Samsung SSD 850 EVO 2TB /dev/sdb: Samsung SSD 850 EVO 2TB /dev/sdc: ST2000DX002-2DV164 /dev/sdd: ST2000DX002-2DV164 normally i would expect that for heavy read-IO the two HDD drives would sleep and the two SSD working more or less like a RAID0 but as example running a btrfs-srub within a virtual machine on a 1.5 TB vdisk you can hear the rotating disks clearly and there are also unexpected lags while a disk IO auf around 700 MB/sec shows that it's basicly working pretty sure the lags are coming because read-access is also spread to HDD - why is that? /dev/md2: Version : 1.1 Creation Time : Wed Jun 8 13:10:56 2011 Raid Level : raid10 Array Size : 3875222528 (3695.70 GiB 3968.23 GB) Used Dev Size : 1937611264 (1847.85 GiB 1984.11 GB) Raid Devices : 4 Total Devices : 4 Persistence : Superblock is persistent Intent Bitmap : Internal Update Time : Sat Feb 11 15:10:31 2017 State : active Active Devices : 4 Working Devices : 4 Failed Devices : 0 Spare Devices : 0 Layout : near=2 Chunk Size : 512K Name : localhost.localdomain:2 (local to host localhost.localdomain) UUID : ea253255:cb915401:f32794ad:ce0fe396 Events : 1818029 Number Major Minor RaidDevice State 4 8 35 0 active sync set-A writemostly /dev/sdc3 5 8 19 1 active sync set-B /dev/sdb3 7 8 51 2 active sync set-A writemostly /dev/sdd3 6 8 3 3 active sync set-B /dev/sda3

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[PATCH] set zEC12 as minimum hw level for s390x
by Dan Horák 03 Feb '17

03 Feb '17

--- baseconfig/s390x/CONFIG_MARCH_Z900 | 1 - baseconfig/s390x/CONFIG_MARCH_Z990 | 1 - baseconfig/s390x/CONFIG_MARCH_Z9_109 | 1 - baseconfig/s390x/CONFIG_MARCH_ZEC12 | 1 + 4 files changed, 1 insertion(+), 3 deletions(-) delete mode 100644 baseconfig/s390x/CONFIG_MARCH_Z900 delete mode 100644 baseconfig/s390x/CONFIG_MARCH_Z990 delete mode 100644 baseconfig/s390x/CONFIG_MARCH_Z9_109 create mode 100644 baseconfig/s390x/CONFIG_MARCH_ZEC12 diff --git a/baseconfig/s390x/CONFIG_MARCH_Z900 b/baseconfig/s390x/CONFIG_MARCH_Z900 deleted file mode 100644 index 6fa9110..0000000 --- a/baseconfig/s390x/CONFIG_MARCH_Z900 +++ /dev/null @@ -1 +0,0 @@ -# CONFIG_MARCH_Z900 is not set diff --git a/baseconfig/s390x/CONFIG_MARCH_Z990 b/baseconfig/s390x/CONFIG_MARCH_Z990 deleted file mode 100644 index b0c3638..0000000 --- a/baseconfig/s390x/CONFIG_MARCH_Z990 +++ /dev/null @@ -1 +0,0 @@ -# CONFIG_MARCH_Z990 is not set diff --git a/baseconfig/s390x/CONFIG_MARCH_Z9_109 b/baseconfig/s390x/CONFIG_MARCH_Z9_109 deleted file mode 100644 index e19e966..0000000 --- a/baseconfig/s390x/CONFIG_MARCH_Z9_109 +++ /dev/null @@ -1 +0,0 @@ -CONFIG_MARCH_Z9_109=y diff --git a/baseconfig/s390x/CONFIG_MARCH_ZEC12 b/baseconfig/s390x/CONFIG_MARCH_ZEC12 new file mode 100644 index 0000000..7dbcbb3 --- /dev/null +++ b/baseconfig/s390x/CONFIG_MARCH_ZEC12 @@ -0,0 +1 @@ +CONFIG_MARCH_ZEC12=y -- 2.7.4

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kernel February 2017