Attachments error after JIRA migration from Windows server to Redhat Linux

Question

We moved JIRA 6.4.14 from Windows server to Redhat Linux. Most of things were going smooth, but some attachments of issue got lost.

We checked attachments are still there in JIRA server ( jira-home/data/attachments folder), but user cannot see or download attachments named in Chinsese from IE or Chrome.

Any pointer is appreciated.

Steven Yang · Answer

We got part of reason.

If we change attachment filename by deleting garbage characters, the system can work. E.g. the old filename is 10306_??????.pdf, the changed filename is 10306, we can download the attachment by IE or Chrome.

We also checked the attachment file is generally named by the pure number in JIRA 6.4.14 ,but we really do not know why there are some many attachments named by number+Chinese in our old windows server. Are they legacy attachments by old JIRA version?

Steven Yang · Answer

we tried set timezone as Asia/Shanghai but does not work yet.

Josh Steckler · Answer

Odd. You may need to look into converting the filenames to utf8 encoding or something like that. look into the convmv command, https://linux.die.net/man/1/convmv

Definitely try this in a non-production area before wiping out anything you've got.

The filenames you see in the UI are stored in the database as utf8 (at least it should) so that's why they're showing, even if they don't work.

I don't think this is a permissions problem, but as a matter of best practice it would also be good to run JIRA with a non-privileged service account.