random unmount of dvd

[gherardo]

Binary package hint: mount

Since I got 7.10 I have random unmount of protected dvd.
Happens with multiple dvds.
Then the system automatically mount them again but disrupt current application (ogle tipically).
No bug reported by system.
Tell me what file I could post.

[Andrea Corbellini (andrea.corbellini)]

Thanks for your bug report!
Please, wait until the dvd is umounted and type
dmesg | tail
in a terminal.

[gherardo (gherardo)]

done
this is the output

[13569.912000] end_request: I/O error, dev hdd, sector 1728124
[13569.932000] hdd: tray open
[13569.952000] end_request: I/O error, dev hdd, sector 1727864
[13569.972000] hdd: tray open
[13569.992000] end_request: I/O error, dev hdd, sector 1727864
[13570.092000] VFS: busy inodes on changed media.
[13570.280000] VFS: busy inodes on changed media.
[13570.680000] VFS: busy inodes on changed media.
[13570.840000] VFS: busy inodes on changed media.
[13571.000000] VFS: busy inodes on changed media.

[gherardo (gherardo)]

Grazie Andrea, another one

[13839.552000] Buffer I/O error on device hdd, logical block 503935
[13839.572000] hdd: tray open
[13839.592000] end_request: I/O error, dev hdd, sector 2015964
[13839.612000] hdd: tray open
[13839.632000] end_request: I/O error, dev hdd, sector 2015704
[13839.652000] hdd: tray open
[13839.672000] end_request: I/O error, dev hdd, sector 2015704
[13840.900000] VFS: busy inodes on changed media.
[13841.060000] VFS: busy inodes on changed media.
[13841.380000] VFS: busy inodes on changed media.

The drive is a Samsung writemaster (TSSTcorpCD/DVDW TS-H552U). Worked perfectly till 7.10.

[gherardo (gherardo)]

done it and posted

[gherardo (gherardo)]

I tried yesterday a fresh install of a 7.10
The problem was that after CD boot during the installation process the drive was opening causing a lot of problems to the installer like hanghing nowhere with no install window open and no error message.
On the same machine I added another dvd drive and worked smoothly.

[bryncoles (brunomatti)]

i have the same problem with 8:4, hardy heron. when watching dvd's (protected and otherwise), about 30-40 minutes into viewing, the dvd it randomly unmounts both the dvd, and the dvd drive. 'sudo mount -a' doesnt restore the drive, but powering down for 10 minutes and rebooting does.

will post 'dmesg | tail' when it next happens.

[bryncoles (brunomatti)]

hmmm. since the last batch of updates, i have run a dvd (one which previously unmounted), and it has played through. maybe the problem is fixed...

[bryncoles (brunomatti)]

ha! it happened again. i was listening to a dvd of mp3 files, and the drive just unmounted. im running hardy heron on a packard bell r4360, and the dvd drive (the third its had) is an NEC DVD+-RW ND-6650A.

dmesg | tail just says

[ 8765.839427] VFS: busy inodes on changed media.
[ 8765.841916] VFS: busy inodes on changed media.
[ 8765.954148] VFS: busy inodes on changed media.
[ 8765.963320] VFS: busy inodes on changed media.
[ 8765.971618] VFS: busy inodes on changed media.
[ 8765.972719] VFS: busy inodes on changed media.
[ 8765.977889] VFS: busy inodes on changed media.
[ 8765.978825] VFS: busy inodes on changed media.
[ 8765.979731] VFS: busy inodes on changed media.
[ 8765.980804] VFS: busy inodes on changed media.

i cant eject the disc either!

[bryncoles (brunomatti)]

oh yeah - i should mention, just before the drive unmounted, the cpu usage shot up to night on 100%, though 'top' showed that no specific program was using anything!

[bryncoles (brunomatti)]

it happened again! i rebooted, and the drive came back. then listening to the mp3's through amarok caused the following dmesg | tail:

$ dmesg | tail

[ 2107.478952] VFS: busy inodes on changed media.
[ 2107.479169] cdrom: This disc doesn't have any tracks I recognize!
[ 2107.487505] VFS: busy inodes on changed media.
[ 2107.588181] VFS: busy inodes on changed media.
[ 2107.596281] VFS: busy inodes on changed media.
[ 2107.596490] cdrom: This disc doesn't have any tracks I recognize!
[ 2107.605647] VFS: busy inodes on changed media.
[ 2107.605865] cdrom: This disc doesn't have any tracks I recognize!
[ 2107.688949] VFS: busy inodes on changed media.
[ 2109.141739] VFS: busy inodes on changed media.

[bryncoles (brunomatti)]

and it happened again today.

dmesg just tells me theres busy inodes on changed media, but i noticed that a partition i had mounted was also unmounted when this happened.

so perhaps hardy is unmounting things from my /media folder? i can ermount the drives, but not the dvd drive without rebooting (and waiting a short while)

[Thomas Hotz (thotz-deactivatedaccount)]

Is this still an issue for you? Which Ubuntu version do you use? Thank you for telling us!

[gherardo (gherardo)]

The PC that had the problem do not exist anymore.
Quite a lot of time passed.
Thanks, Gherardo

________________________________
 From: Thomas Hotz <email address hidden>
To: <email address hidden>
Sent: Thursday, November 22, 2012 12:38 PM
Subject: [Bug 162474] Re: random unmount of dvd

Is this still an issue for you? Which Ubuntu version do you use? Thank
you for telling us!

** Changed in: util-linux (Ubuntu)
       Status: Confirmed => Incomplete

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