A week ago, my home partition (encrypted with ecryptfs, set up in the install process) ran full. I've deleted some files, so now there is plenty of space again. But for some reason, the ecryptfs filesystem randomly unmounts.
If that happens, I just run ecryptfs-mount-private, enter my passphrase, and everything is fine again for some time, but then it unmounts again.
Any idea what could be wrong there and how to fix that?
Here are my /var/log/syslog lines for a timeframe within which the problem occurred:
Aug 26 16:35:01 jost-desktop CRON[3070]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
Aug 26 16:38:58 jost-desktop systemd[1]: Started CUPS Scheduler.
Aug 26 16:38:58 jost-desktop colord[1378]: (colord:1378): Cd-WARNING **: failed to get session [pid 3135]: No such device or address
Aug 26 16:38:58 jost-desktop colord[1378]: message repeated 2 times: [ (colord:1378): Cd-WARNING **: failed to get session [pid 3135]: No such device or address]
Aug 26 16:39:01 jost-desktop CRON[3146]: (root) CMD ( [ -x /usr/lib/php5/sessionclean ] && /usr/lib/php5/sessionclean)
Aug 26 16:41:13 jost-desktop systemd[1]: Starting Cleanup of Temporary Directories...
Aug 26 16:41:13 jost-desktop systemd-tmpfiles[3185]: [/usr/lib/tmpfiles.d/var.conf:14] Duplicate line for path "/var/log", ignoring.
Aug 26 16:41:14 jost-desktop systemd[1]: Started Cleanup of Temporary Directories.
Aug 26 16:45:01 jost-desktop CRON[3232]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
Aug 26 16:51:58 jost-desktop systemd[1]: Started CUPS Scheduler.
Aug 26 16:51:58 jost-desktop colord[1378]: (colord:1378): Cd-WARNING **: failed to get session [pid 3301]: No such device or address
Aug 26 16:51:58 jost-desktop colord[1378]: message repeated 2 times: [ (colord:1378): Cd-WARNING **: failed to get session [pid 3301]: No such device or address]
Aug 26 16:55:01 jost-desktop CRON[3317]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
There is nothing related in dmesg (last entry is from the boot process).
Update: I've also checked the SMART status off all disks, and there don't seem to be any problems. Output from smartctl -a /dev/sdb:
=== START OF INFORMATION SECTION ===
Model Family: Seagate Barracuda 7200.14 (AF)
Device Model: ST1000DM003-1CH162
Serial Number: S1D8W76M
LU WWN Device Id: 5 000c50 05c382341
Firmware Version: CC46
User Capacity: 1.000.204.886.016 bytes [1,00 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: 7200 rpm
Form Factor: 3.5 inches
Device is: In smartctl database [for details use: -P show]
ATA Version is: ATA8-ACS T13/1699-D revision 4
SATA Version is: SATA 3.0, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Thu Sep 14 22:43:53 2017 CEST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
General SMART Values:
Offline data collection status: (0x82) Offline data collection activity
was completed without error.
Auto Offline Data Collection: Enabled.
Self-test execution status: ( 0) The previous self-test routine completed
without error or no self-test has ever
been run.
Total time to complete Offline
data collection: ( 575) seconds.
Offline data collection
capabilities: (0x7b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
Conveyance Self-test supported.
Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 1) minutes.
Extended self-test routine
recommended polling time: ( 108) minutes.
Conveyance self-test routine
recommended polling time: ( 2) minutes.
SCT capabilities: (0x3085) SCT Status supported.
SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000f 119 099 006 Pre-fail Always - 234006864
3 Spin_Up_Time 0x0003 097 097 000 Pre-fail Always - 0
4 Start_Stop_Count 0x0032 098 098 020 Old_age Always - 2479
5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail Always - 0
7 Seek_Error_Rate 0x000f 084 060 030 Pre-fail Always - 4621305762
9 Power_On_Hours 0x0032 081 081 000 Old_age Always - 16848
10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0
12 Power_Cycle_Count 0x0032 098 098 020 Old_age Always - 2506
183 Runtime_Bad_Block 0x0032 100 100 000 Old_age Always - 0
184 End-to-End_Error 0x0032 100 100 099 Old_age Always - 0
187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always - 0
188 Command_Timeout 0x0032 100 098 000 Old_age Always - 6 7 20
189 High_Fly_Writes 0x003a 098 098 000 Old_age Always - 2
190 Airflow_Temperature_Cel 0x0022 065 049 045 Old_age Always - 35 (Min/Max 16/36)
191 G-Sense_Error_Rate 0x0032 100 100 000 Old_age Always - 0
192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 216
193 Load_Cycle_Count 0x0032 099 099 000 Old_age Always - 3086
194 Temperature_Celsius 0x0022 035 051 000 Old_age Always - 35 (0 5 0 0 0)
197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0010 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 30
240 Head_Flying_Hours 0x0000 100 253 000 Old_age Offline - 16941h+00m+06.008s
241 Total_LBAs_Written 0x0000 100 253 000 Old_age Offline - 51949642453
242 Total_LBAs_Read 0x0000 100 253 000 Old_age Offline - 40959708870
SMART Error Log Version: 1
No Errors Logged
SMART Self-test log structure revision number 1
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Short offline Completed without error 00% 82 -
# 2 Short offline Completed without error 00% 17 -
# 3 Short offline Completed without error 00% 9 -
SMART Selective self-test log data structure revision number 1
SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
1 0 0 Not_testing
2 0 0 Not_testing
3 0 0 Not_testing
4 0 0 Not_testing
5 0 0 Not_testing
Selective self-test flags (0x0):
After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.
