Bug 1286637
| Summary: | [geo-rep+tiering]: symlinks are not getting synced to slave on tiered master setup | |||
|---|---|---|---|---|
| Product: | [Red Hat Storage] Red Hat Gluster Storage | Reporter: | Rahul Hinduja <rhinduja> | |
| Component: | geo-replication | Assignee: | Saravanakumar <sarumuga> | |
| Status: | CLOSED ERRATA | QA Contact: | Rahul Hinduja <rhinduja> | |
| Severity: | urgent | Docs Contact: | ||
| Priority: | high | |||
| Version: | rhgs-3.1 | CC: | avishwan, byarlaga, chrisw, csaba, nchilaka, nlevinki, sankarshan, sarumuga | |
| Target Milestone: | --- | Keywords: | ZStream | |
| Target Release: | RHGS 3.1.2 | |||
| Hardware: | x86_64 | |||
| OS: | Linux | |||
| Whiteboard: | ||||
| Fixed In Version: | glusterfs-3.7.5-9 | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | ||
| Clone Of: | ||||
| : | 1287519 (view as bug list) | Environment: | ||
| Last Closed: | 2016-03-01 05:59:39 UTC | Type: | Bug | |
| Regression: | --- | Mount Type: | --- | |
| Documentation: | --- | CRM: | ||
| Verified Versions: | Category: | --- | ||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | ||
| Cloudforms Team: | --- | Target Upstream Version: | ||
| Embargoed: | ||||
| Bug Depends On: | ||||
| Bug Blocks: | 1260783, 1287519, 1288027 | |||
RCA: Changes carried out in Geo-replication are under the assumption that HASH is HOT tier and Cache is COLD tier, so that all namespace operations are avoided in COLD tier. This is no longer the case, (Currently changed as: HASH is COLD tier and CACHE is HOT tier). SYMLINK operations are carried out only in COLD tier and as we avoid cold bricks(in current implementation), all symlink creation operation are not replayed at slave end. Changes will be done such at all namespace operations will be captured only in COLD brick and avoided in HOT bricks. Upstream Patch: http://review.gluster.org/12844 Downstream patch: https://code.engineering.redhat.com/gerrit/#/c/62896/ Verified with build: glusterfs-3.7.5-10.el7rhgs.x86_64 Symlinks are synced to slave. Moving this bug to verified state. Links on slave volume: ====================== [root@mia slave]# mount | grep slave 10.70.37.99:/slave on /mnt/slave type fuse.glusterfs (rw,relatime,user_id=0,group_id=0,default_permissions,allow_other,max_read=131072) [root@mia slave]# ls -l total 0 -rw-r--r--. 1 root root 0 Dec 8 05:19 1 -rw-r--r--. 1 root root 0 Dec 8 05:19 2 -rw-r--r--. 1 root root 0 Dec 8 05:19 3 -rw-r--r--. 1 root root 0 Dec 8 05:19 4 -rw-r--r--. 1 root root 0 Dec 8 05:19 5 -rw-r--r--. 1 root root 0 Dec 8 05:19 6 -rw-r--r--. 1 root root 0 Dec 8 05:19 7 -rw-r--r--. 1 root root 0 Dec 8 05:19 8 -rw-r--r--. 1 root root 0 Dec 8 05:19 9 lrwxrwxrwx. 1 root root 1 Dec 8 2015 s.1 -> 1 lrwxrwxrwx. 1 root root 1 Dec 8 2015 s.2 -> 2 lrwxrwxrwx. 1 root root 1 Dec 8 2015 s.3 -> 3 lrwxrwxrwx. 1 root root 1 Dec 8 2015 s.4 -> 4 lrwxrwxrwx. 1 root root 1 Dec 8 2015 s.5 -> 5 lrwxrwxrwx. 1 root root 1 Dec 8 2015 s.6 -> 6 lrwxrwxrwx. 1 root root 1 Dec 8 2015 s.7 -> 7 lrwxrwxrwx. 1 root root 1 Dec 8 2015 s.8 -> 8 lrwxrwxrwx. 1 root root 1 Dec 8 2015 s.9 -> 9 [root@mia slave]# Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHBA-2016-0193.html |
Description of problem: ======================= Symlink creation on master volume which is tiered volume is not synced to slave volume. For example: File {a,b,c} is created on master volume: [root@dj master]# touch a b c [root@dj master]# ls a b c etc.1 etc.2 etc.3 etc.4 etc.5 [root@dj master]# Files get successfully synced to slave: [root@mia slave]# ls a b c etc.1 etc.2 etc.3 etc.4 etc.5 [root@mia slave]# Create a symlink from master volume: [root@dj master]# ln -s a d [root@dj master]# ls -la total 243 drwxr-xr-x. 9 root root 650 Nov 30 2015 . drwxr-xr-x. 4 root root 31 Nov 30 03:10 .. -rw-r--r--. 1 root root 0 Nov 30 03:49 a -rw-r--r--. 1 root root 0 Nov 30 03:49 b -rw-r--r--. 1 root root 0 Nov 30 03:49 c lrwxrwxrwx. 1 root root 1 Nov 30 2015 d -> a drwxr-xr-x. 80 root root 49152 Nov 30 2015 etc.1 drwxr-xr-x. 80 root root 49152 Nov 30 2015 etc.2 drwxr-xr-x. 80 root root 49152 Nov 30 2015 etc.3 drwxr-xr-x. 80 root root 49152 Nov 30 2015 etc.4 drwxr-xr-x. 80 root root 49152 Nov 30 2015 etc.5 drwxr-xr-x. 3 root root 144 Nov 30 2015 .trashcan [root@dj master]# On Slave it never gets synced: [root@mia slave]# ls -la total 168 drwxr-xr-x. 9 root root 8497 Nov 30 2015 . drwxr-xr-x. 4 root root 31 Nov 30 08:40 .. -rw-r--r--. 1 root root 0 Nov 30 03:49 a -rw-r--r--. 1 root root 0 Nov 30 03:49 b -rw-r--r--. 1 root root 0 Nov 30 03:49 c drwxr-xr-x. 80 root root 32768 Nov 30 2015 etc.1 drwxr-xr-x. 80 root root 32768 Nov 30 2015 etc.2 drwxr-xr-x. 80 root root 32768 Nov 30 2015 etc.3 drwxr-xr-x. 80 root root 32768 Nov 30 2015 etc.4 drwxr-xr-x. 80 root root 32768 Nov 30 2015 etc.5 drwxr-xr-x. 3 root root 96 Nov 30 2015 .trashcan [root@mia slave]# Hardlinks are synced properly: On Master: ========== [root@dj master]# touch {1..10} [root@dj master]# for i in {1..10}; do ln $i hl.$i ; done [root@dj master]# ls 1 2 4 6 8 a c e etc.2 etc.4 hl.1 hl.2 hl.4 hl.6 hl.8 10 3 5 7 9 b d etc.1 etc.3 etc.5 hl.10 hl.3 hl.5 hl.7 hl.9 [root@dj master]# On Slave: ========= [root@mia slave]# ls 1 2 4 6 8 a c etc.1 etc.3 etc.5 hl.10 hl.3 hl.5 hl.7 hl.9 10 3 5 7 9 b e etc.2 etc.4 hl.1 hl.2 hl.4 hl.6 hl.8 [root@mia slave]# Version-Release number of selected component (if applicable): ============================================================= glusterfs-3.7.5-7.el7rhgs.x86_64 How reproducible: ================= 1/1 Steps to Reproduce: =================== 1. Create and Start Tier master volume 2. Create slave volume (DR) 3. Create and start geo-rep session between master and slave volume 4. Mount master and slave volume 5. Create a file on master 6. Let it sync to slave 7. Create a symlink file on master 8. Check on slave Actual results: =============== Symlink never gets syncs to slave while the hardlinks, and new file created are synced Expected results: ================= Symlink should get synced too