python::meta fallback seemingly fails

[adriansev]

Hi! I see in v4.12.4 that fallback still seems not working ..
see all the relevant logs in https://cernbox.cern.ch/index.php/s/Guj3ZyThWEMScn7
@simonmichal Any idea what was forgotten/missed?
Thanks a lot!!
Adrian

[adriansev]

splitting the meta in the 2 sources i get:

xrdcp -P -f -v 5fd2de06-922f-5940-8f67-8758ca2ff001_upb.meta4 test.zip
[0B/0B][100%][==================================================][0B/s]
Run: [ERROR] Server responded with an error: [3014] Unable to open file  /eos/aliceupb/grid/00/05156/d1e6d2e4-f7d8-11ea-9aeb-9b81bcf0d084; Network is unreachable (source)

xrdcp -P -f -v 5fd2de06-922f-5940-8f67-8758ca2ff001_cern.meta4 test.zip
[366.7MB/366.7MB][100%][==================================================][5.392MB/s]

so the problem is the error that eos throw and that disable the copy procedure of the client ... which is absolutely bad and awful, i really hope that i do not have to re-create in my tool a copy-manager in order to bypass such happenings...
amazingly enough, upb is the same site that started the discussion about fallback previous time.
LE. there were 2 FSTs off because of power problems, so there was no ambiguous software state.

[simonmichal]

@adriansev : this must be a regression, by policy ENETUNREACH or kXR_noserver should be retried at metalink level, I just pushed a fix f0c3466

[adriansev]

@simonmichal great! thanks a lot!! will this be also backported to 4.x branch? there will be quite some time until everyone will switch to 5.x and of course the clients will be the last to do so ... thanks a lot again!

[simonmichal]

@adriansev : well, if there's strong desire we can have another bugfix release for 4.12.x series, though I strongly encourage you to move to xrootd 5 ;-) I'm looking into the issues you reported and of course I will try to make the transition as smooth as possible ;-)

[adriansev]

@simonmichal yes, please backport to 4.12.x as ALICE is not prepared to move to 5.x (AFAIK there are problems with both ROOT 5 and 6, where ROOT 5 still being the main version). Thanks a lot!

[simonmichal]

@adriansev : the patch is backported to stable-4.12.x, can we close this one?

[adriansev]

yes, thanks a lot!!