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Re: [PATCH] hw/nvme: select first free NSID for legacy drive configurati
From: |
Hannes Reinecke |
Subject: |
Re: [PATCH] hw/nvme: select first free NSID for legacy drive configuration |
Date: |
Thu, 9 Sep 2021 13:38:32 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 |
On 9/9/21 12:52 PM, Klaus Jensen wrote:
> On Sep 9 11:51, Hannes Reinecke wrote:
>> If a legacy 'drive' argument is passed to the controller we cannot
>> assume that '1' will be a free NSID, as the subsys might already
>> have attached a namespace to this NSID. So select the first free
>> one.
>>
>> Signed-off-by: Hannes Reinecke <hare@suse.de>
>> ---
>> hw/nvme/ctrl.c | 9 ++++++++-
>> 1 file changed, 8 insertions(+), 1 deletion(-)
>>
>> diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c
>> index 757cdff038..2c69031ca9 100644
>> --- a/hw/nvme/ctrl.c
>> +++ b/hw/nvme/ctrl.c
>> @@ -6546,8 +6546,15 @@ static void nvme_realize(PCIDevice *pci_dev, Error
>> **errp)
>>
>> /* setup a namespace if the controller drive property was given */
>> if (n->namespace.blkconf.blk) {
>> + int i;
>> ns = &n->namespace;
>> - ns->params.nsid = 1;
>> + for (i = 1; i <= NVME_MAX_NAMESPACES; i++) {
>> + if (nvme_ns(n, i) || nvme_subsys_ns(n->subsys, i)) {
>> + continue;
>> + }
>> + ns->params.nsid = i;
>> + break;
>> + }
>>
>> if (nvme_ns_setup(ns, errp)) {
>> return;
>> --
>> 2.26.2
>>
>
> Did you actually hit this?
>
> Because then then property checking logic is bad... The device is not
> supposed to allow nvme,drive= combined with a subsystem property. In
> nvme_check_constraints():
>
> if (n->namespace.blkconf.blk && n->subsys) {
> /* error out */
> return;
> }
>
>
Ah. Missed that.
Do ignore my patch then.
Cheers,
Hannes
--
Dr. Hannes Reinecke Kernel Storage Architect
hare@suse.de +49 911 74053 688
SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nürnberg
HRB 36809 (AG Nürnberg), GF: Felix Imendörffer