Bug 764215 (GLUSTER-2483)
| Summary: | Showmount output is not consistent with exported volumes. | ||
|---|---|---|---|
| Product: | [Community] GlusterFS | Reporter: | Gaurav <ggangalw> |
| Component: | nfs | Assignee: | Gaurav <ggangalw> |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 3.1.2 | CC: | gluster-bugs, saurabh |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | RTP | Mount Type: | nfs |
| Documentation: | DNR | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
Anand Avati
2011-03-03 04:58:21 UTC
Assigning to Gaurav. Gaurav, you can set this to resolved because the patch is now committed. Thanks. Output of showmount -e is not consistent with the actual exportlist of NFS. gaurav@gaurav-Vostro-3400:~$ sudo gluster volume info Volume Name: new_vol1 Type: Distribute Status: Started Number of Bricks: 2 Transport-type: tcp Bricks: Brick1: gaurav-Vostro-3400:/home/gaurav/v19 Brick2: gaurav-Vostro-3400:/home/gaurav/v20 Options Reconfigured: nfs.enable-ino32: yes Volume Name: new_vol Type: Distributed-Replicate Status: Started Number of Bricks: 2 x 4 = 8 Transport-type: tcp Bricks: Brick1: gaurav-Vostro-3400:/home/gaurav/v11 Brick2: gaurav-Vostro-3400:/home/gaurav/v12 Brick3: gaurav-Vostro-3400:/home/gaurav/v13 Brick4: gaurav-Vostro-3400:/home/gaurav/v14 Brick5: gaurav-Vostro-3400:/home/gaurav/v15 Brick6: gaurav-Vostro-3400:/home/gaurav/v16 Brick7: gaurav-Vostro-3400:/home/gaurav/v17 Brick8: gaurav-Vostro-3400:/home/gaurav/v18 Options Reconfigured: performance.stat-prefetch: yes diagnostics.client-log-level: TRACE diagnostics.brick-log-level: TRACE nfs.enable-ino32: yes gaurav@gaurav-Vostro-3400:~$ sudo showmount -e Export list for gaurav-Vostro-3400: /new_vol1 * It happens when exportlist contains more than one entries. Its a timing issue so doen't happen consistently. The problem is with handling child_up event in NFS, there we maintain a array of started volumes for NFS, we fill that array in child_up event for each volume, but in case of parallel child_up events for same volume, this array could contain inconsistent data as checking and inserting operations are not atomic and we are also not checking for duplicate entries while inserting. I have tried out restarting glusterd several times, and the showmount -e has shown accurate result consistently, [root@centos-qa-4 sbin]# showmount -e localhost Export list for localhost: /srj-dist * /dist1 * [root@centos-qa-4 sbin]# /etc/init.d/glusterd restart Stopping glusterd: [ OK ] Starting glusterd: [ OK ] [root@centos-qa-4 sbin]# showmount -e localhost Export list for localhost: /srj-dist * /dist1 * [root@centos-qa-4 sbin]# /etc/init.d/glusterd restart Stopping glusterd: [ OK ] Starting glusterd: [ OK ] [root@centos-qa-4 sbin]# showmount -e localhost Export list for localhost: /srj-dist * /dist1 * [root@centos-qa-4 sbin]# |