On 2014-07-24 18:56, Allan Jude wrote:
I would expect ZFS to give up ARC when it needed memory and couldn't get
On 2014-07-24 16:11, Larry Rosenman wrote:
On 2014-07-24 15:07, Allan Jude wrote:
On 2014-07-24 15:57, Larry Rosenman wrote:
On 2014-07-24 14:53, Mark Martinec wrote:
2014-07-24 21:31, Larry Rosenman wrote:
borg.lerctr.org /home/ler # zxfer -dFkPvs -g 376 -O
r...@tbh.lerctr.org -R zroot zroot/backups/TBH
Creating recursive snapshot zroot@zxfer_26699_20140724135840.
Checking grandfather status of all snapshots marked for
Grandfather check passed.
Sending zroot@zxfer_26699_20140724135840 to
Sending zroot/ROOT@zxfer_26699_20140724135840 to
Sending zroot/ROOT/default@zxfer_23699_20140724134435 to
Sending zroot/ROOT/default@zxfer_26699_20140724135840 to
(incremental to zroot/ROOT/default@zxfer_23699_20140724134435.)
Sending zroot/home@zxfer_26699_20140724135840 to
Write failed: Cannot allocate memory
cannot receive new filesystem stream: invalid backup stream
Error when zfs send/receiving.
borg.lerctr.org /home/ler #
well that's different.......
Sounds familiar, check my posting of today and links therein:
I'm not using netgraph to the best of my knowledge....
and the only fails on the SENDING host are:
8 Bucket: 64, 0, 41, 3555, 257774, 11,
12 Bucket: 96, 0, 96, 2569, 123653, 0,
16 Bucket: 128, 0, 17195, 506, 215573, 0,
32 Bucket: 256, 0, 340, 4670, 900638, 50,
64 Bucket: 512, 0, 10691, 365,
128 Bucket: 1024, 0, 3563, 905, 348419, 0,
256 Bucket: 2048, 0, 2872, 162,
vmem btag: 56, 0, 192811, 51500, 502264,1723,
I regularly use zxfer to transfer 500+ GiB datasets over the
This week I actually replicated a 2.1 TiB dataset with zxfer without
I wonder which thing is running out of memory. Is there a delay while
is 'running out of memory', or does it fail immediately? Does running
top while it is working on running out of memory reveal anything?
I would expect to use up a lot of memory while doing deduplication,
Note: I most often use openssh-portable rather than base ssh for
replication, as I enable the nonecipher to reduce CPU usage, and
the TcpRcvBuf upwards to actually saturate a gigabit over the
I wasn't watching exactly what it was doing, but the sending box has
and 18G Swap and swap
has NOT been touched.
last pid: 74288; load averages: 4.70, 5.61, 5.91 up 1+03:14:18
115 processes: 3 running, 112 sleeping
CPU: 0.6% user, 33.3% nice, 0.6% system, 0.1% interrupt, 65.4% idle
Mem: 847M Active, 761M Inact, 14G Wired, 4616K Cache, 357M Free
ARC: 12G Total, 6028M MFU, 5281M MRU, 3152K Anon, 120M Header, 688M
Swap: 18G Total, 18G Free
so I have zero idea where to go here.
Most ZFS memory usage is 'wired' and so cannot be swapped, so lack of
swap activity isn't a good indicator.
I also am running Karl Denninger's Arc patch that makes the arc MUCH
more responsive to
freeing ARC when the system needs memory.
Larry Rosenman http://www.lerctr.org/~ler
Phone: +1 214-642-9640 (c) E-Mail: l...@lerctr.org
US Mail: 108 Turvey Cove, Hutto, TX 78634-5688
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