#3047 closed Bug (fixed)
Periodic disk access in idle state
| Reported by: | elmer91 | Owned by: | jch |
|---|---|---|---|
| Priority: | Normal | Milestone: | 1.93 |
| Component: | libtransmission | Version: | 1.80 |
| Severity: | Normal | Keywords: | |
| Cc: | jch@…, 1100101@… |
Description
Since version 1.80, transmission is doing disk access every half an hour even in idle state.
With no torrent at all (empty queue: 0 paused, 0 seeding, 0 downloading) transmission is doing disk access periodically. When running on an embedded system it prevents disks from sleeping down.
Disks were perfectly sleeping with versions 1.76 and lower.
I located the new feature responsible of this: It related to IPV6 and DHT.
It comes from function tr_globalIPv6 (net.c)
This functions calls tr_globalAddress (net.c) to guess our IPV6 internal address. This is done by binding a UDP socket to an external IPV6 address (www.transmissionbt.com or www.ietf.org).
Name resolution performed for these external addresses causes parsing of /etc/hosts file and prevents disks from sleeping.
It could be fixed different ways:
- Caching external IPV6 addresses used
- Using static external IPV6 addresses for binding interfaces
- Assuming IPV6 is not used after several unsuccessfull tries
Attachments (1)
Change History (12)
comment:1 Changed 13 years ago by elmer91
- Version changed from 1.91 to 1.80+
comment:2 Changed 13 years ago by charles
- Cc jch@… added
comment:3 Changed 13 years ago by KyleK
- Cc 1100101@… added
comment:4 Changed 13 years ago by jch
- Owner changed from charles to jch
- Status changed from new to assigned
Yuck.
Changed 13 years ago by jch
comment:5 Changed 13 years ago by jch
- Owner changed from jch to charles
- Status changed from assigned to new
comment:6 Changed 13 years ago by livings124
- Keywords backport-1.9x added; disk access removed
- Milestone changed from None Set to 2.00
- Version changed from 1.80+ to 1.80
comment:7 Changed 13 years ago by charles
- Owner changed from charles to jch
fixed in trunk for 2.00 by r10498 by a patch from jch
comment:8 follow-up: ↓ 9 Changed 13 years ago by charles
- Resolution set to fixed
- Status changed from new to closed
comment:9 in reply to: ↑ 8 Changed 13 years ago by elmer91
comment:10 Changed 13 years ago by charles
- Keywords backport-1.9x removed
- Milestone changed from 2.00 to 1.93
backported to 1.9x by r10570
comment:11 Changed 13 years ago by charles
- Priority changed from Low to Normal
- Severity changed from Minor to Normal
cc'ing the resident ipv6 expert