ctime changes under cpool
martin f krafft via BackupPC-users <[email protected]> Sat, 1 Aug 2026 14:02:37 +0200
| Newsgroups | gmane.comp.sysutils.backup.backuppc.general |
|---|---|
| Message-ID | <[email protected]> |
--===============4920235391215589426==
Content-Type: multipart/alternative; boundary="hljwndx56fvy57o6"
Content-Description: Group of alternative content
Content-Disposition: inline
--hljwndx56fvy57o6
Content-Type: text/plain; charset=utf-8; format=flowed; markup=markdown
Content-Description: Plain-text version
Content-Disposition: inline
Hello,
Trying to figure out an off-site mirror strategy for my BackupPC store,
I take note that lots of files under cpool have their `ctime` changed
regularly, e.g.:
```
% stat /srv/backuppc/cpool/d2/58/d259d622983aa9b756021b50df69a6ea
File: /srv/backuppc/cpool/d2/58/d259d622983aa9b756021b50df69a6ea
Size: 4417 Blocks: 16 IO Block: 4096 regular file
Device: 253,0 Inode: 27857695 Links: 1
Access: (0445/-r--r--r-x) Uid: ( 111/backuppc) Gid: ( 117/backuppc)
Access: 2026-07-01 10:14:34.261213443 +0200
Modify: 2026-07-01 10:14:34.261213443 +0200
Change: 2026-08-01 02:15:16.559765952 +0200
Birth: 2026-07-01 10:14:34.261213443 +0200
```
At 2:15 last night, it seems that a refCountUpdate was running (which
incidentally reported 23 errors of missing and unexpectedly empty
files).
Does this process randomly update `ctime`s of files? Why? Can I prevent
this?
Thanks,
--
martin krafft | https://matrix.to/#/#madduck:madduck.net
remember, half the people are below average.
{: .blockquote }
spamtraps: [email protected]
{: .hidden }
--hljwndx56fvy57o6
Content-Type: text/html; charset=utf-8
Content-Description: HTML version
Content-Disposition: inline
<!DOCTYPE html>
<html>
<head>
<meta content="text/html; charset=utf-8" http-equiv="content-type"/>
<meta content="width=device-width, initial-scale=1.0" name="viewport"/>
</head>
<body style="font-family: Lato, Calibri, Tahoma, sans-serif; max-width: 32em">
<p style="text-align: justify; text-justify: auto">Hello,</p>
<p style="text-align: justify; text-justify: auto">Trying to figure out an off-site mirror strategy for my BackupPC store, I take note that lots of files under cpool have their <code>ctime</code> changed regularly, e.g.:</p>
<p style="text-align: justify; text-justify: auto"><code>% stat /srv/backuppc/cpool/d2/58/d259d622983aa9b756021b50df69a6ea
File: /srv/backuppc/cpool/d2/58/d259d622983aa9b756021b50df69a6ea
Size: 4417 Blocks: 16 IO Block: 4096 regular file
Device: 253,0 Inode: 27857695 Links: 1
Access: (0445/-r--r--r-x) Uid: ( 111/backuppc) Gid: ( 117/backuppc)
Access: 2026-07-01 10:14:34.261213443 +0200
Modify: 2026-07-01 10:14:34.261213443 +0200
Change: 2026-08-01 02:15:16.559765952 +0200
Birth: 2026-07-01 10:14:34.261213443 +0200</code></p>
<p style="text-align: justify; text-justify: auto">At 2:15 last night, it seems that a refCountUpdate was running (which incidentally reported 23 errors of missing and unexpectedly empty files).</p>
<p style="text-align: justify; text-justify: auto">Does this process randomly update <code>ctime</code>s of files? Why? Can I prevent this?</p>
<p style="text-align: justify; text-justify: auto">Thanks,</p>
<div id="signature" style="font-family: Lato, Calibri, Tahoma, sans-serif; max-width: 32em"><span class="sig_separator" style="display: none">-- </span>
<p style="text-align: justify; text-justify: auto">martin krafft | <a href="https://matrix.to/#/#madduck:madduck.net">https://matrix.to/#/#madduck:madduck.net</a></p>
<p class="blockquote" style="text-align: justify; text-justify: auto; padding: 0 0.5em; margin: 0; font-style: italic; border-left: 2px solid #666">remember, half the people are below average.<br/></p>
<p class="hidden" style="text-align: justify; text-justify: auto; display: none">spamtraps: <a href="mailto:madduck.bogus@madduck.net">madduck.bogus@madduck.net</a><br/></p>
</div>
</body>
</html>
--hljwndx56fvy57o6--
--===============4920235391215589426==
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
--===============4920235391215589426==
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
_______________________________________________
BackupPC-users mailing list
[email protected]
List: https://lists.sourceforge.net/lists/listinfo/backuppc-users
Wiki: https://github.com/backuppc/backuppc/wiki
Project: https://backuppc.github.io/backuppc/
--===============4920235391215589426==--