The errors column is 0. The drop column is 18. The second bit number
is the number of packets which should grow. At least that is how I read
it. Column makes it more readable in a terminal but not so much in an
email.
On 12/21/23 14:18, Alex wrote:
Can someone help me determine if these errors are normal or if this
could somehow be the cause? I've removed the last three columns for
readability - they were all zeros.
# column -t /proc/net/dev
Inter-| Receive | Transmit
face |bytes packets errs drop fifo frame compressed
multicast|bytes packets errs drop fifo
lo: 133093161 146045 0 0 0 0 0
0 133093161 146045 0 0 0
ens18: 166999724 256655 0 16 0 0 0
0 167638513 218267 0 0 0
The "errs" for ens18 are steadily increasing, but the "drop" column is
steady. It's also curious the errors on loopback would also be increasing?
Other ideas on how to troubleshoot this would be greatly appreciated.
Thanks,
Alex
On Wed, Dec 20, 2023 at 9:27 PM Alex <mysqlstud...@gmail.com
<mailto:mysqlstud...@gmail.com>> wrote:
Hi,
On Wed, Dec 20, 2023 at 11:03 AM Kevin Korb via rsync
<rsync@lists.samba.org <mailto:rsync@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 <http://config1.cf/>,0)
config1.cf <http://config1.cf/> is uptodate
send_files(0, config1.cf <http://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.
>
>
>
>
>
>
--
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Kevin Korb Phone: (407) 252-6853
Systems Administrator Internet:
FutureQuest, Inc. ke...@futurequest.net
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~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,
Kevin Korb Phone: (407) 252-6853
Systems Administrator Internet:
FutureQuest, Inc. ke...@futurequest.net (work)
Orlando, Florida k...@sanitarium.net (personal)
Web page: https://sanitarium.net/
PGP public key available on web site.
~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,
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