Fresh install of 11.10
os-prober hangs on /usr/lib/os-probes/50mounted-tests repeatedly with many
package installs/removals, kernel upgrades, grub updates, etc.
because of ntfs disagreements about /dev/sda2
I've learned I needed to kill pstree of 50mounted-tests repeatedly to
unfreeze, and then often installations fail due to half-installed state.
os-prober hangs on /usr/lib/os-probes/50mounted-tests
├─su-to-root,2151,master /usr/sbin/su-to-root -X -c /usr/sbin/startupmanager
│ └─gksu,2158 -u root /usr/sbin/startupmanager
│ └─sudo,2160,root -H -S -p GNOME_SUDO_PASS -u root --
/usr/sbin/startupmanager
│ └─python,2161 /usr/sbin/startupmanager
│ ├─{python},2164
│ └─sh,2165 -c /usr/sbin/update-grub
│ └─grub-mkconfig,2166 /usr/sbin/grub-mkconfig -o
/boot/grub/grub.cfg
│ └─30_os-prober,2486 /etc/grub.d/30_os-prober
│ └─30_os-prober,2499 /etc/grub.d/30_os-prober
│ ├─os-prober,2500 /usr/bin/os-prober
│ │ └─50mounted-tests,2633
/usr/lib/os-probes/50mounted-tests /dev/sda2
│ │ └─10freedos,2645
/usr/lib/os-probes/mounted/10freedos /dev/sda2 /var/lib/os-prober/mount fuseblk
│ │ ├─ls,2648 -1
/var/lib/os-prober/mount
│ │ └─grep,2649 -q -i ^kernel.sys$
│ ├─tr,2501 ^
│ └─paste,2502 -s -d
==> /var/log/syslog <==
Jan 29 00:50:10 quant 50mounted-tests: debug: running subtest
/usr/lib/os-probes/mounted/10qnx
Jan 29 00:50:10 quant 50mounted-tests: debug: running subtest
/usr/lib/os-probes/mounted/20macosx
Jan 29 00:50:10 quant 10qnx: debug: /dev/sda2 is not a QNX4 partition: exiting
Jan 29 00:50:10 quant 50mounted-tests: debug: running subtest
/usr/lib/os-probes/mounted/20macosx
Jan 29 00:50:10 quant macosx-prober: debug: /dev/sda2 is a FUSE partition
Jan 29 00:50:10 quant macosx-prober: debug: /dev/sda2 is a FUSE partition
Jan 29 00:53:51 quant kernel: [12361.016087] INFO: task 20macosx:27533 blocked
for more than 120 seconds.
Jan 29 00:53:51 quant kernel: [12361.016092] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
==> /var/log/kern.log <==
Jan 29 00:53:51 quant kernel: [12361.016087] INFO: task 20macosx:27533 blocked
for more than 120 seconds.
Jan 29 00:53:51 quant kernel: [12361.016092] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jan 29 00:53:51 quant kernel: [12361.016096] 20macosx D 00000000 0
27533 2633 0x00000000
Jan 29 00:53:51 quant kernel: [12361.016103] f243ddb4 00000086 00006b91
00000000 f243dd82 f243dd58 c1761fe0 c186dec0
Jan 29 00:53:51 quant kernel: [12361.016112] c186dec0 8a31804f 00000b0a
f5005ec0 f31d4c80 f31d0cc0 00000000 e5928013
Jan 29 00:53:51 quant kernel: [12361.016121] ee697ca8 00000005 00000005
f243de0c f243dec8 f243dd94 c113338e f243dea8
Jan 29 00:53:51 quant kernel: [12361.016130] Call Trace:
Jan 29 00:53:51 quant kernel: [12361.016142] [<c113338e>] ?
__follow_mount_rcu.isra.11+0x2e/0xb0
Jan 29 00:53:51 quant kernel: [12361.016148] [<c113463f>] ?
do_lookup+0x8f/0x270
Jan 29 00:53:51 quant kernel: [12361.016154] [<c152c475>] schedule+0x35/0x50
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https://bugs.launchpad.net/bugs/528073
Title:
blkid (sometimes?) hangs on extended partition if same device name
existed before partitioning
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