<!DOCTYPE html><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /></head><body><div data-crea="font-wrapper" style="font-family: Tahoma; font-size: 16px"><div>Thanks <span style="font-family: Helvetica, Tahoma, Arial, sans-serif; font-size: 14.6666669845581px;">Bron / list for your reply </span><br></div><div><span style="font-family: Helvetica, Tahoma, Arial, sans-serif; font-size: 14.6666669845581px;"><br></span></div><div><span style="font-family: Helvetica, Tahoma, Arial, sans-serif; font-size: 14.6666669845581px;">I am using </span><font face="Helvetica, Tahoma, Arial, sans-serif"><span style="font-size: 14.6666669845581px;">cyrus-imapd-2.4.17-6.el6.x86_64 , with ext4 file system .</span></font></div><div><font face="Helvetica, Tahoma, Arial, sans-serif"><span style="font-size: 14.6666669845581px;"><br></span></font></div><div>Just now the issue has been resolved , I found corruption with inode level and few emails. Some email was converted to binary file. </div><div>Due to which few mailboxes was corrupted . Delivery or access of such mailbox was getting failed and Segmentation fault & core file was getting generated . </div><div><br></div><div>After identifying such mailbox manually , i moved those to other path and removed all cyrus.* files , recreated the new mailbox and moved that all non-corrupted emails and reconstruct the same. Its seem my issue is resolved for now . For next 1/2 days will monitor the flow and after that will shift the data with new LUN . I Will verify the badblocks and will re-format the LUN with new fresh filesystem.</div><div><br></div><div>Do you know what could be the reason for below scenario :-- </div><div>------------------------------------------------------------------------</div><div>I found one interesting point with core.xxxx files , The sizing of such files with du -sh & ls -lh was showing different . </div><div>While doing the same file "cp" or "rsync" it was showing me different size. Also the inodes for "cp" file was less and inodes for "rsync" file was more. With Google I learn that cp & du work differently . </div><div><br></div><div>I verified the same with another ext3 partition , but there sizing is showing proper. <br></div><div><br></div><div>My question is , whether its normal behavior or related corrupted inode or file system ? In tune2fs -l , filesystem showing clean.</div><div>Below is for reference scenario. </div><div><br></div><div><span style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;">[root@active ~]# </span><b style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;">rsync</b><span style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;"> -av /hacluster/varlib/imap/core.10236 /hacluster/san-testing/by-rsync/</span><br style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;"><span style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;">[root@active ~]# </span><b style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;">cp</b><span style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;"> -p /hacluster/varlib/imap/core.10236 /hacluster/san-testing/by-cp/</span><br style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;"><br style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;"><span style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;">[root@active ~]# ls -lh /hacluster/san-testing/by-cp/core.10236 /hacluster/san-testing/by-rsync/core.10236 </span><br style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;"><span style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;">-rw------- 1 cyrus mail </span><b style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;">1.3G</b><span style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;"> Jun 16 08:19 /hacluster/san-testing/by-cp/core.10236</span><br style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;"><span style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;">-rw------- 1 cyrus mail </span><b style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;">1.3G</b><span style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;"> Jun 16 08:19 /hacluster/san-testing/by-rsync/core.10236</span><br style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;"><br style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;"><span style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;">[root@active ~]# du -sh /hacluster/san-testing/by-cp/core.10236 /hacluster/san-testing/by-rsync/core.10236 </span><br style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;"><b style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;">3.3M</b><span style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;"> /hacluster/san-testing/by-cp/core.10236 <----- Note this </span><br style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;"><b style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;">1.3G</b><span style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;"> /hacluster/san-testing/by-rsync/core.10236</span><br style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;"><br style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;"><span style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;">[root@active ~]# md5sum /hacluster/san-testing/by-cp/core.10236 /hacluster/san-testing/by-rsync/core.10236 </span><br style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;"><b style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;">2b66ecf5187fb341e60ba61c92747d0d</b><span style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;"> /hacluster/san-testing/by-cp/core.10236</span><br style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;"><b style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;">2b66ecf5187fb341e60ba61c92747d0d</b><span style="font-family: 'Times New Roman', Times, serif; font-size: 14.6666669845581px;"> /hacluster/san-testing/by-rsync/core.10236</span><br></div><div><br></div><div>Regards<br></div><div>Jayesh Shinde</div><br><br><div></div><br><br>On Fri, Jun 19, 2015 at 04:06 AM, Bron Gondwana <brong@fastmail.fm> wrote:<blockquote><div>
<div>We're going to need to know at least what version of Cyrus you are running. Loading a core file with gdb and pasting a backtrace might be helpful too.<br></div>
<div> </div>
<div>Bron.<br></div>
<div> </div>
<div> </div>
<div>On Thu, Jun 18, 2015, at 12:40 AM, Jayesh Shinde wrote:<br></div>
<blockquote type="cite"><div><span style='font-family: "Times New Roman"," Times"," serif"'>Hi , <br><br>
I am facing problem with randomly mail delivery to local
mailboxes. While doing reconstruct its showing </span><span style='font-family: "Times New Roman"," Times"," serif"'><span style="">Segmentation fault</span><br>
Also there lots of core.xxx files created under /var/lib/imap. <br><br>
-bash-4.1$ /usr/lib/cyrus-imapd/reconstruct -r -f
<a href="mailto:user/amit.badarpur@domain.com" target="_blank" tabindex="-1">user/amit.badarpur@domain.com</a><br><a href="mailto:user/amit.badarpur@domain.com" target="_blank" tabindex="-1">user/amit.badarpur@domain.com</a><br>
Segmentation fault<br><br>
And the dmesg is showing error like below . <br><br>
imapd[7127]: segfault at 7f9092d7ce33 ip 00007f905fc1192e sp
00007fff659f55e0 error 4 in imapd[7f905fbae000+191000]<br>
reconstruct[17981]: segfault at 7f656e112c4b ip 00007f64fdc1380e
sp 00007ffff1cf7110 error 4 in reconstruct[7f64fdbdd000+15b000]<br>
reconstruct[19517]: segfault at 7f0ea8ae2c4b ip 00007f0e3494780e
sp 00007fff162a79d0 error 4 in reconstruct[7f0e34911000+15b000]<br>
reconstruct[19693]: segfault at 7fa5821b0c4b ip 00007fa50e01580e
sp 00007fff2f724aa0 error 4 in reconstruct[7fa50dfdf000+15b000]<br>
lmtpd[6046]: segfault at 7f141270712e ip 00007f13d86c242e sp
00007fff483d6000 error 4 in lmtpd[7f13d867e000+16d000]<br>
lmtpd[3130]: segfault at 7fd68612606f ip 00007fd665e8b42e sp
00007fff9b8595f0 error 4 in lmtpd[7fd665e47000+16d000]<br><br>
I checked by moving the mailbox from iscsi partition to local
drive and simlink the same . But when i do reconstruct again it
gives "</span><span style='font-family: "Times New Roman"," Times"," serif"'>Segmentation
fault" <br>
I checked by doing the gdb the core.xxx files , but not able to
got the actual problem. <br><br>
What could be the problem. Is its related server's Memory or
currption on mailbox ? <br>
How can I handle it. <br><br>
Regards<br>
Jayesh Shinde<br></span></div>
<div>----<br></div>
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</blockquote><div> </div>
<div><div>--<br></div>
<div>Bron Gondwana<br></div>
<div><a href="mailto:brong@fastmail.fm" target="_blank" tabindex="-1">brong@fastmail.fm</a><br></div>
<div> </div>
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<div> </div>
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