For me it's the mtab entry for tracefs on a non-existing mount point in
/var/lib/ureadahead/debugfs/tracing that is causing problems. It does
affect VMware snapshots when quiescing is required too.
Since it's a different entry then in this post I opened a new bug report
in #1659684
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Installing linux-image-hwe-virtual-trusty on 14.04 with latest updates
broke Veeam backups. This is a urgent issue, can somebody advice?
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https://bugs.launchpad.net/bugs/499773
Title:
open-vm-tools also chokes on this, when freezing filesystems for a
quiesced snapshot
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https://bugs.launchpad.net/bugs/499773
Title:
Race with ureadahead can mean that
This bug does cause deja-dup to hang if you're backing up system files.
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https://bugs.launchpad.net/bugs/499773
Title:
Race with ureadahead can mean that /var/lib/ureadahead/debugfs
This is mainly for the benefit of people who search google for this
problem and end up here.
I've seen this on several servers. A simple umount
/var/lib/ureadahead/debugfs removes the errant mtab entry and cleans up
df output if it's bothering you.
It's highly unlikely that this mount lying
It is not harmless. I am also getting file system full errors. For
example, Mozilla Firefox, can't download anything since it can't store
any temp files.
$ df -h
FilesystemSize Used Avail Use% Mounted on
/dev/mapper/vg_local-root
19G 19G 0 100% /
none
@Håkan Jonsson (comment #20):
But your root file system really is showing that it's full:
$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg_local-root
19G 19G 0 100% /
Note the 100%, 19G out of 19G used. Have you proven that that's not
true? (Pretty
Help me out here, folks: Is this harmless or not? On the one hand, if
it's just a matter of /etc/mtab claiming there's something mounted that
isn't, that seems (relatively) harmless. On the other hand, we have at
least one user reporting here (comment #9) that they see a significant
performance
Looks like doing dist-upgrade will fix it
Processing triggers for ureadahead ...
ureadahead will be reprofiled on next reboot
Setting up linux-image-2.6.32-31-server (2.6.32-31.61) ...
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Is there a way to clean this up when it happens? E.g. a safe way to
audit and fix /etc/mtab?
** Description changed:
+ When the system is booted, the mountall process may notice a
+ temporarily-mounted file system at /var/lib/ureadahead/debugfs and
+ record that fact in /etc/mtab. Later in
Getting this in fresh install of maverick 10.10, fully updated.
$ df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/shim-root
230343852 107685244 110957772 50% /
none 4034012 340 4033672 1% /dev
none
Mine disappeared after a server re-boot (on fully patched 10.04 system)
- but will it re-appear?
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Title:
Race with ureadahead can mean that
It's still happening in natty:
$ df -h
FilesystemSize Used Avail Use% Mounted on
/dev/sda1 106G 62G 39G 62% /
none 2,0G 296K 2,0G 1% /dev
none 2,0G 5,2M 2,0G 1% /dev/shm
none 2,0G 128K 2,0G 1% /var/run
Why has this been set to importance: low when tens of thousands of users
are told their hard disks are full, and they can no longer store files
on them?
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Race with ureadahead can mean that /var/lib/ureadahead/debugfs appears in
/etc/mtab
https://bugs.launchpad.net/bugs/499773
You received
** Changed in: mountall (Ubuntu)
Importance: Medium = Low
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Race with ureadahead can mean that /var/lib/ureadahead/debugfs appears in
/etc/mtab
https://bugs.launchpad.net/bugs/499773
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