It requires patch from, otherwise it fails anyway: "mdadm/grow: adding a test to ensure resize was required" https://www.spinics.net/lists/raid/msg59743.html Since: 19ceb16dafb7df98ff90298008d4488dc93b370a ("Grow: add raid10 reshape.") # mdadm mdadm-3.2.5-120-g19ceb16 Since: 3ea7daa5d7fde47cd41f4d56c2deb949114da9d6 ("md/raid10: add reshape support") # linux v3.4-rc5-15-g3ea7daa5d7fd Tested-on: linux 4.13+ Signed-off-by: Azat Khuzhin <a3at.mail@xxxxxxxxx> Cc: NeilBrown <neilb@xxxxxxxx> Cc: Zhilong Liu <zlliu@xxxxxxxx> --- Any thoughts? mdadm.8.in | 2 +- tests/02r10grow | 32 ++++++++++++++++++++++++++++++++ 2 files changed, 33 insertions(+), 1 deletion(-) create mode 100644 tests/02r10grow diff --git a/mdadm.8.in b/mdadm.8.in index f0fd1fc..62da7b1 100644 --- a/mdadm.8.in +++ b/mdadm.8.in @@ -123,7 +123,7 @@ missing, spare, or failed drives, so there is nothing to monitor. Grow (or shrink) an array, or otherwise reshape it in some way. Currently supported growth options including changing the active size of component devices and changing the number of active devices in -Linear and RAID levels 0/1/4/5/6, +Linear and RAID levels 0/1/4/5/6/10, changing the RAID level between 0, 1, 5, and 6, and between 0 and 10, changing the chunk size and layout for RAID 0,4,5,6,10 as well as adding or removing a write-intent bitmap and changing the array's consistency policy. diff --git a/tests/02r10grow b/tests/02r10grow new file mode 100644 index 0000000..0b177fe --- /dev/null +++ b/tests/02r10grow @@ -0,0 +1,32 @@ + +# create a 4-disk raid10 array, make it 8-disk array. +# +# This SHOULD fail: +# - before mdadm 3.3 and linux 3.5 +# - with metadata v0.90 +# +# This also fails: +# - with metadata 1.0 with "mdadm: Insufficient head-space for reshape on /dev/loop1" error + +m=2 +cm=1 + +for metadata in 1.1 1.2; do + # 4 disks + mdadm -CR $md0 --metadata $metadata --level raid10 --raid-disks 4 $dev1 $dev2 $dev3 $dev4 + check wait + check state UUUU + check raid10 + testdev $md0 $m $mdsize1 $[512*cm] + + # 8 disks + mdadm $md0 --add $dev8 $dev9 $dev10 $dev11 + mdadm $md0 --grow --raid-devices 8 + check wait + check state UUUUUUUU + check raid10 + testdev $md0 $m $[mdsize1*2] $[512*cm] + + + mdadm -S $md0 +done -- 2.16.1 -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
