[MultiDB] add mutidb warmboot support - restoring database #5773
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@qiluo-msft These two PRs are for multiDB warmboot support as proposed earlier. |
* lua script to backup all database into one database and create rdb file - following earlier multiDB warmboot design at https://github.com/Azure/SONiC/blob/master/doc/database/multi_database_instances.md * copy this rdb file as before to WARM_DIR * restoring database part is in another PR at sonic-buildimage sonic-net/sonic-buildimage#5773, they depend on each other
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@qiluo-msft I saw another pr is merged sonic-net/sonic-utilities#1205 We need this PR ready as well if we want to update sonic-utilities sub module, otherwise warm boot will be broken. Please take a look on this as well |
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Offline discussed. |
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| mkdir -p /var/lib/$inst | ||
| if [[ -f $DUMPFILE ]]; then | ||
| # copy warmboot rdb file into each new instance location | ||
| cp $DUMPFILE /var/lib/$inst/dump.rdb |
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If cp source file is same as the destination, there will be error message and exit code. #Closed
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I tried it on DUT earlier, it just shows a msg telling A and B are the same file, it didn't affect the function, also we don't use the exit code in docker-database-init.sh.
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agree. Updated
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I revisit the behavior, to not change today’s behavior, cp -u is correct instead of -n. There is a case we need to overwrite. For example, after warm boot, we do a cold boot, an empty rdb file wil overwrite the previous warm boot rdb file. So -u is correct, only newer source will be copied.
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Thanks for the insight and sorry for the misleading. Even cp -u is not exactly what you truly need, considering the extreme the case the time adjusted backward. So either option is ok:
- revert back to bare
cp, and keep error messages - check $DUMPFILE != /var/lib/$inst/dump.rdb before
cp
In reply to: 536868596 [](ancestors = 536868596,536449280)
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I am checking if src and dst file is the same. Updated
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@qiluo-msft looks everything passed. Could we merg this and at the same time , I'll open another for updating sonic-utilities |
…acking up database (#6181) update sonic-utilites submodule, adding MultiDB warmboot backing up database support: * [MultiDB] add MultiDB warmboot support - backing up database (#1205) * lua script to backup all database into one database and create rdb file - following earlier multiDB warmboot design at https://github.com/Azure/SONiC/blob/master/doc/database/multi_database_instances.md * copy this rdb file as before to WARM_DIR * restoring database part is in another PR at sonic-buildimage #5773, they depend on each other
* lua script to backup all database into one database and create rdb file - following earlier multiDB warmboot design at https://github.com/Azure/SONiC/blob/master/doc/database/multi_database_instances.md * copy this rdb file as before to WARM_DIR * restoring database part is in another PR at sonic-buildimage sonic-net/sonic-buildimage#5773, they depend on each other
Signed-off-by: Dong Zhang d.zhang@alibaba-inc.com