innobackupex –rsync 報錯 Error: can't create file (null)/xtrabackup_rsyncfiles_pass1



innobackupex /backup –rsync –user=xx –password=xxx 備份時報錯:


Error: can't create file (null)/xtrabackup_rsyncfiles_pass1

網上搜尋沒有找到答案,於是向官方報告 bug ,發現已經有人匯報瞭該bug:


Bug Description


After latest update xtrabackup to 2.3.2 my backup scripts stop working.

Problem in "–rsync" argument. With it in half of "copying X to Y" xtrabackup exit with error message:


can't create file (null)/xtrabackup rsync files pass1



With previous builds all was fine.

Problem command line:


innobackupex –defaults-file=/etc/mysql/my.cnf –user=root –password=`cat /root/passwords/.mysql` –no-timestamp –throttle=40 –rsync /var/backups/separate_disk/mysql/${WEEK_DAY_NUMBER}f 2>&1



If remove "–rsync" – all work without errors.


P.S. and previous versions uses "root" as default user name. Now it use "mysql" if in command line didn't defined "–user". (Back incompatibility)

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Sergei Glushchenko (sergei.glushchenko) wrote on 2015-10-30:     #1


Would specifying –tmpdir=/tmp (or other directory) resolve the rsync issue?

Maxim (sailormax) wrote on 2015-11-01:     #2



Sergei Glushchenko (sergei.glushchenko) wrote on 2015-11-09:     #3


We'll set tmpdir to system/user default when it is not specified.

Changed in percona-xtrabackup:

status:     New → Triaged

importance:     Undecided → High 




在使用 –rsync 選項時,需要增加 –tmpdir=/tmp 選擇,來指定 xtrabackup_rsyncfiles_pass1 臨時文件的存儲位置:


innobackupex /backup/ –rsync –tmpdir=/tmp –user=xxx –password=xxx

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