Hi,
On Wed, Dec 20, 2023 at 11:03?AM Kevin Korb via rsync <rsync at
lists.samba.org>
wrote:
> What is the error? I assume you know that with that syntax the
> filelist.txt is local rather than remote.
>
Yes, I do know it refers to the list of local files.
There is no error - it just hangs indefinitely until some timeout period.
This is what it looks like on the remote side:
$ ps ax|grep rsync
324075 ? Ss 0:00 rsync --server -vvvvlogDtpRe.LsfxCIvu .
/var/tmp/one/
324094 ? S 0:00 rsync --server -vvvvlogDtpRe.LsfxCIvu .
/var/tmp/one/
On the local side, with a few -vvvv added to rsync, I see this:
recv_file_list done
get_local_name count=9 /var/tmp/one/
generator starting pid=324075
delta-transmission enabled
recv_generator(config1.cf,0)
config1.cf is uptodate
send_files(0, config1.cf)
then it just stalls until it eventually times out. However, if I remove any
one of the nine files from the filelist, it completes normally.
It actually also exhibits the same problem without a filelist at all - as
long as I'm transferring multiple files, it fails. I suppose if I were
syncing a directory with less than nine files, it might succeed, but local
directory to any remote directory on this one server fails.
This also isn't a disk space or inode problem or corrupt filesystem problem
- the same command works from a different host to this one problematic host
without a problem.
I've also confirmed the open file limit is large enough on both sides:
# ulimit -n
50000
I've now spent hours and hours trying to isolate and troubleshoot this
problem. It really feels like it's somehow related to the number of files
being transferred, not the size of the files. If I break up a directory
into multiple attempts, I can eventually transfer all the files (maybe 40
in total), but trying to send all 40 files at once and none get transferred.
It almost certainly has something to do with building the initial list of
files. If that list is too large, the transfer fails, even if the majority
of the files in the source are already in the destination.
It also happens when I'm pushing the files to the destination or pulling
them from the remote to local.
Thanks,
Alex
>
> On 12/20/23 09:50, Alex via rsync wrote:
> > Hi, I've been using rsync on fedora over ssh to sync directories
for
> > decades, but suddenly having a problem with transferring multiple
files
> > at a time to one specific host using --files-from. I can't think
of what
> > might have changed to have caused this. Using rsync to transfer a
single
> > file to this problematic host works successfully. It appears to be
> > related to the number of files in the --files-from filelist. More than
> > nine and it stalls; less than nine and it finishes successfully.
I'm
> > using the same version of rsync on both sides.
> >
> > (Server) Protocol versions: remote=31, negotiated=31
> > (Client) Protocol versions: remote=31, negotiated=31
> >
> > When running the following command, it appears to collect the list of
> > files to be transferred, successfully makes the connection with the
> > remote server, but then just stalls. Using strace on the remote side
> > shows rsync appears to be waiting for data.
> >
> > rsync -avvvv --files-from=/etc/mail/filelist.txt -e 'ssh -i
> > /root/keys/sync-key-v4' /etc/mail/tmp/ polaris:/var/tmp/one/
> >
> > sync-key-v4 is a passwordless ed25519 key, but I've tried a
handful of
> > other ed25519 keys.
> >
> > Could it be related to packet size or some kind of network disparity?
> > It's not related to the size of the files, as I've tried large
and small
> > and it doesn't matter - if the number of files exceeds 9, it
fails.
> >
> >
> >
> >
> >
> >
>
> --
>
~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,
> Kevin Korb Phone: (407) 252-6853
> Systems Administrator Internet:
> FutureQuest, Inc. Kevin at FutureQuest.net (work)
> Orlando, Florida kmk at sanitarium.net (personal)
> Web page: https://sanitarium.net/
> PGP public key available on web site.
>
~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,
>
> --
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