#18486: network raid 5 unstable in 3.14
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Reporter: Culex | Owner: developers
Type: defect | Status: new
Priority: high | Milestone:
Component: packages | Version: Trunk
Keywords: |
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Within 5 minutes of mounting on r43457 on a WNDR3800
md/raid:md0: Disk failure on loop3, disabling device.
mdadm --manage /dev/md0 --re-add /dev/loop3
mdadm: Cannot open /dev/loop3: Device or resource busy
# losetup -d /dev/loop3
# losetup -a
/dev/loop1: 0 /media/live1/node1.img
/dev/loop2: 0 /media/live2/node2.img
/dev/loop3: 0 /media/live3/node3.img
# lsof | grep "loop3"
loop3 2577 root cwd DIR 0,15 0 160 /
loop3 2577 root rtd DIR 0,15 0 160 /
loop3 2577 root txt unknown
/proc/2577/exe
# ps | grep "2577"
2577 root 0 SW< [loop3]
# reboot
# mdadm --manage /dev/md0 --re-add /dev/loop3
mdadm: re-added /dev/loop3
root@OpenWrt:~# cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md0 : active raid5 loop3[3] loop1[0] loop2[1]
3878157312 blocks super 1.2 level 5, 512k chunk, algorithm 2 [3/2]
[UU_]
[>....................] recovery = 0.0% (2596/1939078656)
finish=24783.6min speed=1298K/sec
bitmap: 5/15 pages [20KB], 65536KB chunk
Anytime the router reboots loop3 gets dropped, re-add it and it returns to
0.0% which I thought bitmaps were supposed to prevent?
I have reverted back to r43205 and loop3 isn't getting dropped anymore.
--
Ticket URL: <https://dev.openwrt.org/ticket/18486>
OpenWrt <http://openwrt.org>
Opensource Wireless Router Technology
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