Re: [pve-devel] [PATCH storage] fix #3610: properly build ZFS detail tree

[Fabian Ebner <f.ebner@proxmox.com>]

Am 09.09.21 um 18:24 schrieb Thomas Lamprecht:
> On 07.09.21 11:30, Fabian Ebner wrote:
>> Previously, top-level vdevs like log or special were wrongly added as
>> children of the previous outer vdev instead of the root.
>>
>> Fix it by also showing the vdev with the same name as the pool and
>> start counting from level 1 (the pool itself serves as the root and
>> should be the only one with level 0). This results in the same kind
>> of structure as in PBS and (except for the root) zpool status itself.
>>
>> Signed-off-by: Fabian Ebner <f.ebner@proxmox.com>
>> ---
>>   PVE/API2/Disks/ZFS.pm | 4 ++--
>>   1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/PVE/API2/Disks/ZFS.pm b/PVE/API2/Disks/ZFS.pm
>> index 0418794..60077c4 100644
>> --- a/PVE/API2/Disks/ZFS.pm
>> +++ b/PVE/API2/Disks/ZFS.pm
>> @@ -240,8 +240,8 @@ __PACKAGE__->register_method ({
>>   		$config = 1;
>>   	    } elsif ($config && $line =~ m/^(\s+)(\S+)\s*(\S+)?(?:\s+(\S+)\s+(\S+)\s+(\S+))?\s*(.*)$/) {
>>   		my ($space, $name, $state, $read, $write, $cksum, $msg) = ($1, $2, $3, $4, $5, $6, $7);
>> -		if ($name ne "NAME" and $name ne $param->{name}) {
>> -		    my $lvl= int(length($space)/2); # two spaces per level
>> +		if ($name ne "NAME") {
>> +		    my $lvl = int(length($space) / 2) + 1; # two spaces per level
>>   		    my $vdev = {
>>   			name => $name,
>>   			msg => $msg,
>>
> 
> hmm, I get the idea and can see how one could assert that this is more correct,
> but as it is presented it'd be a bit more confusing too, IMO, as it does not
> matches the zpool status CLI output anymore.
> 
> I.e., the following (real):
>>          NAME                                      STATE     READ WRITE CKSUM
>>          zpt                                       ONLINE       0     0     0
>>            mirror-0                                ONLINE       0     0     0
>>              scsi-0QEMU_QEMU_HARDDISK_drive-scsi3  ONLINE       0     0     0
>>              scsi-0QEMU_QEMU_HARDDISK_drive-scsi4  ONLINE       0     0     0
>>          logs
>>            scsi-0QEMU_QEMU_HARDDISK_drive-scsi5    ONLINE       0     0     0
> 
> 
> Is suggested to be (adapted):
>>          NAME                                      STATE     READ WRITE CKSUM
>>          zpt                                       ONLINE
>>            zpt                                       ONLINE       0     0     0
>>              mirror-0                                ONLINE       0     0     0
>>                scsi-0QEMU_QEMU_HARDDISK_drive-scsi3  ONLINE       0     0     0
>>                scsi-0QEMU_QEMU_HARDDISK_drive-scsi4  ONLINE       0     0     0
>>          logs
>>            scsi-0QEMU_QEMU_HARDDISK_drive-scsi5    ONLINE       0     0     0
> 

Is 'logs' aligned with the outer 'zpt' or the inner 'zpt'? It's intended 
to be the inner one, but in the mail it looks like the outer one to me.

> 
> How about hiding the root in the devices tree and add a line to the
> KV grid above instead? E.g., something that would then render:
> 
> Pool       <ID> (<STATUS>)
> 
> That can be a GUI change only, did not really checked implementation details, but
> I'd like to clear that up before applying this patch.
> 

I suppose that should be done for PBS too then? And PVE should switch to 
using the ZFSDetail window from widget-toolkit?