SF4.1 VxDMP disables dmpnode on single path failure
Hi G,
yes I even did a retry since I assumed I had overlooked something but it is a steady bug, not transient. The VxVM had not even a chance to write to the private region or even initialize the disks since VxDMP does a path probe before writing (or does probing on idle LUNs anyway) and as soon as it stepped on those inactice ALUA paths it disabled the whole dmpnode.
So I had no chance to use any of the LUNs at all. A complete failure.
But I do now run with dm-multipath and use the LUNs as foreign disks and it works like a charm. Since we are in production on Friday I will keep it like this:
riser5:~ # vxdisk list isar2_sas_2
Device: isar2_sas_2
devicetag: isar2_sas_2
type: simple
hostid: bla
disk: name=disk id=1339397620.4.bla
group: name=xxxdg id=1339445883.17.bla
flags: online ready private foreign autoimport imported
pubpaths: block=/dev/disk/by-name/isar2_sas_2 char=/dev/disk/by-name/isar2_sas_2
version: 2.1
iosize: min=512 (bytes) max=1024 (blocks)
public: slice=0 offset=2049 len=33552383 disk_offset=0
private: slice=0 offset=1 len=2048 disk_offset=0
update: time=1339535796 seqno=0.15
ssb: actual_seqno=0.0
headers: 0 248
configs: count=1 len=1481
logs: count=1 len=224
Defined regions:
config priv 000017-000247[000231]: copy=01 offset=000000 enabled
config priv 000249-001498[001250]: copy=01 offset=000231 enabled
log priv 001499-001722[000224]: copy=01 offset=000000 enabled
# multipath -ll
isar2_sas_2 dm-1 Promise,VTrak E610f
[size=16G][features=1 queue_if_no_path][hwhandler=0]
\_ round-robin 0 [prio=100][enabled]
\_ 0:0:0:12 sdb 8:16 [active][ready]
\_ 1:0:0:12 sdf 8:80 [active][ready]
\_ round-robin 0 [prio=2][enabled]
\_ 0:0:1:12 sdd 8:48 [active][ready]
\_ 1:0:1:12 sdh 8:112 [active][ready]
isar2_test_1 dm-0 Promise,VTrak E610f
[size=1.0G][features=1 queue_if_no_path][hwhandler=0]
\_ round-robin 0 [prio=100][enabled]
\_ 0:0:0:9 sda 8:0 [active][ready]
\_ 1:0:0:9 sde 8:64 [active][ready]
\_ round-robin 0 [prio=2][enabled]
\_ 0:0:1:9 sdc 8:32 [active][ready]
\_ 1:0:1:9 sdg 8:96 [active][ready]
And of course thank you for your effort!
Ursi
