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SubjectRe: 2 second nvme initialization delay regression in 5.18 [Was: Re: [bug report]nvme0: Admin Cmd(0x6), I/O Error (sct 0x0 / sc 0x2) MORE DNR observed during blktests]
Hi Christoph,

On Fri, Jun 10, 2022 at 08:14:49AM +0200, Christoph Hellwig wrote:
> That leaves us with two plausible theories:
>
> - the problems could be due to an earlier firmware version or
> ASIC stepping
> - the problems are due to the thunderbolt attachment

Right, that seems like the set of variance we're dealing with. If it's a
firmware version issue, then we revert because people can update? Or can
we quirk firmware version numbers too? If it's ASIC stepping, I guess we
need to quirk that. And likewise thunderbolt, but that seems more
awkward to quirk around, because afaik, it all just appears as PCIe?

> Monish and Jason, can you please send me the output of nvme id-ctrl
> /dev/nvmeX (where /dev/nvmeX is the actual device number)?

NVME Identify Controller:
vid : 0x144d
ssvid : 0x144d
sn : <redacted>
mn : Samsung SSD 970 EVO Plus 2TB
fr : 2B2QEXM7
rab : 2
ieee : 002538
cmic : 0
mdts : 9
cntlid : 0x4
ver : 0x10300
rtd3r : 0x30d40
rtd3e : 0x7a1200
oaes : 0
ctratt : 0
rrls : 0
cntrltype : 0
fguid :
crdt1 : 0
crdt2 : 0
crdt3 : 0
nvmsr : 0
vwci : 0
mec : 0
oacs : 0x17
acl : 7
aerl : 3
frmw : 0x16
lpa : 0x3
elpe : 63
npss : 4
avscc : 0x1
apsta : 0x1
wctemp : 358
cctemp : 358
mtfa : 0
hmpre : 0
hmmin : 0
tnvmcap : 2000398934016
unvmcap : 0
rpmbs : 0
edstt : 35
dsto : 0
fwug : 0
kas : 0
hctma : 0x1
mntmt : 356
mxtmt : 358
sanicap : 0
hmminds : 0
hmmaxd : 0
nsetidmax : 0
endgidmax : 0
anatt : 0
anacap : 0
anagrpmax : 0
nanagrpid : 0
pels : 0
domainid : 0
megcap : 0
sqes : 0x66
cqes : 0x44
maxcmd : 0
nn : 1
oncs : 0x5f
fuses : 0
fna : 0x5
vwc : 0x1
awun : 1023
awupf : 0
icsvscc : 1
nwpc : 0
acwu : 0
ocfs : 0
sgls : 0
mnan : 0
maxdna : 0
maxcna : 0
subnqn :
ioccsz : 0
iorcsz : 0
icdoff : 0
fcatt : 0
msdbd : 0
ofcs : 0
ps 0 : mp:7.50W operational enlat:0 exlat:0 rrt:0 rrl:0
rwt:0 rwl:0 idle_power:- active_power:-
ps 1 : mp:5.90W operational enlat:0 exlat:0 rrt:1 rrl:1
rwt:1 rwl:1 idle_power:- active_power:-
ps 2 : mp:3.60W operational enlat:0 exlat:0 rrt:2 rrl:2
rwt:2 rwl:2 idle_power:- active_power:-
ps 3 : mp:0.0700W non-operational enlat:210 exlat:1200 rrt:3 rrl:3
rwt:3 rwl:3 idle_power:- active_power:-
ps 4 : mp:0.0050W non-operational enlat:2000 exlat:8000 rrt:4 rrl:4
rwt:4 rwl:4 idle_power:- active_power:-

Jason

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