Difference between revisions of "Tier1 Operations Report 2019-03-26"

From GridPP Wiki
Jump to: navigation, search
()
()
 
(5 intermediate revisions by one user not shown)
Line 10: Line 10:
 
| style="background-color: #b7f1ce; border-bottom: 1px solid silver; text-align: center; font-size: 1em; font-weight: bold; margin-top: 0; margin-bottom: 0; padding-top: 0.1em; padding-bottom: 0.1em;" | Review of Issues during the week 18th March 2019 to the 26th March 2019.
 
| style="background-color: #b7f1ce; border-bottom: 1px solid silver; text-align: center; font-size: 1em; font-weight: bold; margin-top: 0; margin-bottom: 0; padding-top: 0.1em; padding-bottom: 0.1em;" | Review of Issues during the week 18th March 2019 to the 26th March 2019.
 
|}
 
|}
* Worker nodes on the batch farm had been kernel patched and rebooted. The Viglen 2011 batch of machines not returned to production (most of them are broken).
+
* Worker nodes on the batch farm had been kernel patched and rebooted. The Viglen 2011 tranche of machines not be returned to production (most of them are broken).
* Tier-1 continues to be involved in the on-going Security challenge.
+
* Tier-1 continues to be involved in the on-going Security challenge - we are now in the evaluation phase.
 
* SAM tests are frequently not reporting periods of monitoring.
 
* SAM tests are frequently not reporting periods of monitoring.
 
<!-- ***********End Review of Issues during last week*********** ----->
 
<!-- ***********End Review of Issues during last week*********** ----->
Line 64: Line 64:
 
! Comments
 
! Comments
 
|-
 
|-
| -
+
| gdss733
| -
+
| LHCb
| -
+
| lhcbDst
| -
+
| d1t0
 
| -
 
| -
 
|}
 
|}
Line 191: Line 191:
 
! Subject
 
! Subject
 
! Scope
 
! Scope
 +
! Solution
 
|-
 
|-
 
| style="background-color: lightgreen;" | 140385
 
| style="background-color: lightgreen;" | 140385
 
| cms
 
| cms
| waiting for reply
+
| in progress
 
| less urgent
 
| less urgent
 
| 25/03/2019
 
| 25/03/2019
Line 201: Line 202:
 
| Data Transfer problems at T1_UK_RAL
 
| Data Transfer problems at T1_UK_RAL
 
| WLCG
 
| WLCG
 +
|
 
|-
 
|-
 
| style="background-color: lightgreen;" | 140220
 
| style="background-color: lightgreen;" | 140220
Line 211: Line 213:
 
| mice LFC to DFC transition
 
| mice LFC to DFC transition
 
| EGI
 
| EGI
 +
|
 
|-
 
|-
| style="background-color: lightgreen;" | 139723
+
| style="background-color: yellow;" | 139672
| atlas
+
| in progress
+
| less urgent
+
| 15/02/2019
+
| 14/03/2019
+
| Data Management - generic
+
| permissions on scratchdisk
+
| EGI
+
|-
+
| style="background-color: lightgreen;" | yellow
+
 
| other
 
| other
 
| in progress
 
| in progress
Line 231: Line 224:
 
| No LIGO pilots running at RAL
 
| No LIGO pilots running at RAL
 
| EGI
 
| EGI
 +
|
 
|-
 
|-
 
| style="background-color: red;" | 138665
 
| style="background-color: red;" | 138665
Line 241: Line 235:
 
| Problem accessing LFC at RAL
 
| Problem accessing LFC at RAL
 
| EGI
 
| EGI
 +
|
 
|}
 
|}
 
<!-- **********************End Availability Report************************** ----->
 
<!-- **********************End Availability Report************************** ----->
Line 265: Line 260:
 
! Subject
 
! Subject
 
! Scope
 
! Scope
 +
! Solution
 
|-
 
|-
 
| 140283
 
| 140283
Line 275: Line 271:
 
| UK RAL-LCG2: DESTINATION SRM_PUT_TURL error
 
| UK RAL-LCG2: DESTINATION SRM_PUT_TURL error
 
| WLCG
 
| WLCG
 +
| Corrected ownership of the CASTOR dir to atlas001:atlas
 
|-
 
|-
 
| 140278
 
| 140278
Line 285: Line 282:
 
| Transfers failing from FNAL_Buffer to RAL_Disk
 
| Transfers failing from FNAL_Buffer to RAL_Disk
 
| WLCG
 
| WLCG
 +
| we had a problem with ECHO mistakenly returning the correct size and checksum for files which failed transfers and were corrupt which resulted in them being marked as good by PhEDEx and then lying latent until they were accessed or transferred out.
 +
 +
Transfers recovered.
 
|-
 
|-
 
| 140210
 
| 140210
Line 295: Line 295:
 
| Cannot access some files
 
| Cannot access some files
 
| WLCG
 
| WLCG
 +
| These files were lost from RAL-LCG2-ECHO_DATADISK, probably due to an FTS bug which should now be fixed. They were identified here because they were needed by the production team. The ticket submitter has now marked them lost in Rucio.
 +
 +
Independently, we have been analysing the results of the Rucio consistency checker. It identified 163 files lost from this disk. The 5 files listed in this ticket are among the 163. We will mark the remaining files lost in Rucio.
 
|-
 
|-
 
| 140177
 
| 140177
Line 305: Line 308:
 
| RAL FTS - Transfers failing from T1_US_FNAL_Disk to some sites
 
| RAL FTS - Transfers failing from T1_US_FNAL_Disk to some sites
 
| WLCG
 
| WLCG
 +
| IPv6 was registered, although not fully enabled at FNAL. RAL had IPv6 fully enabled, so expected to transfer via that connection, however it was timing out and not falling back to IPv4. FNAL removed the IPv6 address, and since then the link has been green.
 
|-
 
|-
 
| 140082
 
| 140082
Line 315: Line 319:
 
| RAL-LCG2 squid service degraded
 
| RAL-LCG2 squid service degraded
 
| WLCG
 
| WLCG
 +
| squid01 node is back serving requests.
 +
There was an overnight problem with the underlying storage for this VM node.
 
|-
 
|-
 
| 139990
 
| 139990
Line 325: Line 331:
 
| T1_UK_RAL xrootd segfaulted
 
| T1_UK_RAL xrootd segfaulted
 
| WLCG
 
| WLCG
 +
| The issue is intermittent and occasional. This segfault is most likely a known problem, which will be addressed in xrootd version 4.9, along with other fixes. RAL will install this when available.
 
|-
 
|-
 
| 139983
 
| 139983
Line 335: Line 342:
 
| Failed to bring files online at RAL-tape
 
| Failed to bring files online at RAL-tape
 
| EGI
 
| EGI
 +
| See above.
 
|-
 
|-
 
| 139858
 
| 139858
Line 345: Line 353:
 
| Failing transfers of 7 files from T1_UK_RAL_Disk to T2_FR_GRIF_LLR
 
| Failing transfers of 7 files from T1_UK_RAL_Disk to T2_FR_GRIF_LLR
 
| WLCG
 
| WLCG
 +
| Missing chunks, so deleted the files and they are now retransferred.
 
|-
 
|-
 
| 139639
 
| 139639
Line 355: Line 364:
 
| file open error at RAL
 
| file open error at RAL
 
| WLCG
 
| WLCG
 +
| files retransfered
 
|-
 
|-
 
| 139476
 
| 139476
Line 365: Line 375:
 
| LFC dump for MICE VO
 
| LFC dump for MICE VO
 
| EGI
 
| EGI
 +
| DB dump provided.
 
|-
 
|-
 
| 139306
 
| 139306
Line 375: Line 386:
 
| perfsonar hosts need updating
 
| perfsonar hosts need updating
 
| EGI
 
| EGI
 +
| Hosts updated and additional information added. Thanks!
 
|-
 
|-
 
| 138500
 
| 138500
Line 385: Line 397:
 
| Transfers failing from T2_PL_Swierk to RAL
 
| Transfers failing from T2_PL_Swierk to RAL
 
| WLCG
 
| WLCG
 +
| block size changed to default
 +
|-
 +
| 138033
 +
| atlas
 +
| solved
 +
| urgent
 +
| 01/11/2018
 +
| 26/03/2019
 +
| Other
 +
| singularity jobs failing at RAL
 +
| EGI
 +
| As  the new batch containers have been fully rolled out and appear to have been working since the 18/03/19 I'm going to call this one as solved.
 
|}
 
|}
 
|}<!-- **********************End Availability Report************************** ----->
 
|}<!-- **********************End Availability Report************************** ----->
Line 492: Line 516:
 
{| border=1 align=center  
 
{| border=1 align=center  
 
| Target Availability for each site is 97.0%  
 
| Target Availability for each site is 97.0%  
| style="background-color: Red;" | Red <90%  
+
| style="background-color: red;" | Red <90%  
 
| style="background-color: orange;" | Orange <97%  
 
| style="background-color: orange;" | Orange <97%  
 
|}
 
|}
Line 499: Line 523:
 
! Day !! Atlas HC !! CMS HC !! Comment
 
! Day !! Atlas HC !! CMS HC !! Comment
 
|-
 
|-
| 2019-03-12 || 100 || 100 ||  
+
| 2019-03-19 || style="background-color: orange;" | 96 || 99 ||
 +
|-
 +
| 2019-03-20 || 100 || 99 ||  
 
|-
 
|-
| 2019-03-13 || 100 || 100 ||  
+
| 2019-03-21 || 100 || N/A ||  
 
|-
 
|-
| 2019-03-14 || 100 || 100||  
+
| 2019-03-22 || 100 || N/A ||  
 
|-
 
|-
| 2019-03-15 || 100 || 99||  
+
| 2019-03-23 || 100 || 100 ||  
 
|-
 
|-
| 2019-03-16 || 100 || 98||  
+
| 2019-03-24 || 100 || 100 ||  
 
|-
 
|-
| 2019-03-17 || 100 || 98||  
+
| 2019-03-25 || 100 || 99 ||  
 
|-
 
|-
| 2019-03-18 || 96 || N/A||  
+
| 2019-03-26 || 100 || 99 ||  
 
|-
 
|-
 
|}  
 
|}  

Latest revision as of 09:51, 27 March 2019

RAL Tier1 Operations Report for 26th March 2019

Review of Issues during the week 18th March 2019 to the 26th March 2019.
  • Worker nodes on the batch farm had been kernel patched and rebooted. The Viglen 2011 tranche of machines not be returned to production (most of them are broken).
  • Tier-1 continues to be involved in the on-going Security challenge - we are now in the evaluation phase.
  • SAM tests are frequently not reporting periods of monitoring.
Current operational status and issues
Resolved Castor Disk Server Issues
Machine VO DiskPool dxtx Comments
- - - - -
Ongoing Castor Disk Server Issues
Machine VO DiskPool dxtx Comments
gdss733 LHCb lhcbDst d1t0 -
Limits on concurrent batch system jobs.
  • ALICE - 1000
Notable Changes made since the last meeting.
  • NTR
Entries in GOC DB starting since the last report.
Service ID Scheduled? Outage/At Risk Start End Duration Reason
- - - - - - - -
Declared in the GOC DB
Service ID Scheduled? Outage/At Risk Start End Duration Reason
- - - - - - - -
  • No ongoing downtime
Advanced warning for other interventions
The following items are being discussed and are still to be formally scheduled and announced.

Listing by category:

  • DNS servers will be rolled out within the Tier1 network.
Open

GGUS Tickets (Snapshot taken during morning of the meeting).

Request id Affected vo Status Priority Date of creation Last update Type of problem Subject Scope Solution
140385 cms in progress less urgent 25/03/2019 26/03/2019 CMS_Data Transfers Data Transfer problems at T1_UK_RAL WLCG
140220 mice in progress less urgent 15/03/2019 25/03/2019 Other mice LFC to DFC transition EGI
139672 other in progress urgent 13/02/2019 18/03/2019 Middleware No LIGO pilots running at RAL EGI
138665 mice on hold urgent 04/12/2018 30/01/2019 Middleware Problem accessing LFC at RAL EGI
GGUS Tickets Closed Last week
Request id Affected vo Status Priority Date of creation Last update Type of problem Subject Scope Solution
140283 atlas solved less urgent 19/03/2019 20/03/2019 File Transfer UK RAL-LCG2: DESTINATION SRM_PUT_TURL error WLCG Corrected ownership of the CASTOR dir to atlas001:atlas
140278 cms solved urgent 19/03/2019 22/03/2019 CMS_Data Transfers Transfers failing from FNAL_Buffer to RAL_Disk WLCG we had a problem with ECHO mistakenly returning the correct size and checksum for files which failed transfers and were corrupt which resulted in them being marked as good by PhEDEx and then lying latent until they were accessed or transferred out.

Transfers recovered.

140210 atlas solved top priority 14/03/2019 19/03/2019 File Transfer Cannot access some files WLCG These files were lost from RAL-LCG2-ECHO_DATADISK, probably due to an FTS bug which should now be fixed. They were identified here because they were needed by the production team. The ticket submitter has now marked them lost in Rucio.

Independently, we have been analysing the results of the Rucio consistency checker. It identified 163 files lost from this disk. The 5 files listed in this ticket are among the 163. We will mark the remaining files lost in Rucio.

140177 cms solved urgent 13/03/2019 18/03/2019 CMS_Data Transfers RAL FTS - Transfers failing from T1_US_FNAL_Disk to some sites WLCG IPv6 was registered, although not fully enabled at FNAL. RAL had IPv6 fully enabled, so expected to transfer via that connection, however it was timing out and not falling back to IPv4. FNAL removed the IPv6 address, and since then the link has been green.
140082 atlas closed less urgent 06/03/2019 21/03/2019 Other RAL-LCG2 squid service degraded WLCG squid01 node is back serving requests.

There was an overnight problem with the underlying storage for this VM node.

139990 cms solved urgent 01/03/2019 20/03/2019 CMS_AAA WAN Access T1_UK_RAL xrootd segfaulted WLCG The issue is intermittent and occasional. This segfault is most likely a known problem, which will be addressed in xrootd version 4.9, along with other fixes. RAL will install this when available.
139983 t2k.org closed less urgent 28/02/2019 21/03/2019 File Access Failed to bring files online at RAL-tape EGI See above.
139858 cms closed urgent 23/02/2019 18/03/2019 CMS_Data Transfers Failing transfers of 7 files from T1_UK_RAL_Disk to T2_FR_GRIF_LLR WLCG Missing chunks, so deleted the files and they are now retransferred.
139639 cms closed very urgent 12/02/2019 22/03/2019 CMS_AAA WAN Access file open error at RAL WLCG files retransfered
139476 mice closed less urgent 01/02/2019 22/03/2019 Other LFC dump for MICE VO EGI DB dump provided.
139306 dteam closed less urgent 24/01/2019 20/03/2019 Monitoring perfsonar hosts need updating EGI Hosts updated and additional information added. Thanks!
138500 cms closed urgent 26/11/2018 22/03/2019 CMS_Data Transfers Transfers failing from T2_PL_Swierk to RAL WLCG block size changed to default
138033 atlas solved urgent 01/11/2018 26/03/2019 Other singularity jobs failing at RAL EGI As the new batch containers have been fully rolled out and appear to have been working since the 18/03/19 I'm going to call this one as solved.

Availability Report

Day Atlas Atlas-Echo CMS LHCB Alice OPS Comments
2019-03-19 100 100 100 100 100 93
2019-03-20 100 100 100 100 100 100
2019-03-21 100 100 100 100 100 100
2019-03-22 100 100 100 100 100 100
2019-03-23 81 81 100 100 100 100
2019-03-24 100 100 100 100 100 100
2019-03-25 100 100 100 100 100 100
2019-03-26 100 100 100 100 100 100
Hammercloud Test Report
Target Availability for each site is 97.0% Red <90% Orange <97%
Day Atlas HC CMS HC Comment
2019-03-19 96 99
2019-03-20 100 99
2019-03-21 100 N/A
2019-03-22 100 N/A
2019-03-23 100 100
2019-03-24 100 100
2019-03-25 100 99
2019-03-26 100 99

Key: Atlas HC = Atlas HammerCloud (Queue RAL-LCG2_UCORE, Template 841); CMS HC = CMS HammerCloud

Notes from Meeting.