kernel hang
Is there something wrong with doing
while true; do dd if=/dev/zero of=/dev/vg1/test; done and
lvextend -L+90M /dev/vg1/test
at the same time?
It caused a system hang (no messages, no log) on linux-2.4.0-test12-pre3 (with ext2 online resize patches, but there obviously was no filesystem on the volume)
Jan
PS: Andreas, perhaps the errors I saw were not ext2 related. Maybe the kernel doesn't like writing to the device and resizing it at the same time?
Quoted 7 lines · Jan Niehusmann
Is there something wrong with doing
while true; do dd if=/dev/zero of=/dev/vg1/test; done and
lvextend -L+90M/dev/vg1/testat the same time?
No.
The extension of the LV is done in an atomic way.
Quoted 4 lines
It caused a system hang (no messages, no log) on linux-2.4.0-test12-pre3 (with ext2 online resize patches, but there obviously was no filesystem on the volume)
Did you experience other heavy load hangs in general?
Quoted 12 lines
Jan
PS: Andreas, perhaps the errors I saw were not ext2 related. Maybe the kernel doesn't like writing to the device and resizing it at the same time?
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Signature · 12 lines
Regards,
Heinz -- The LVM guy --
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Heinz Mauelshagen Sistina Software Inc.
Senior Consultant/Developer Bartningstr. 12
64289 Darmstadt
Germany
[email protected] +49 6151 7103 86
FAX 7103 96
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-Quoted 1 line · Heinz J. Mauelshagen
Did you experience other heavy load hangs in general?
no, none. Neither processor nor i/o load like heavy swapping cause any problems.
In fact, this was the first complete hangup for months.
Jan
Quoted 6 lines · Jan Niehusmann
Quoted 1 line · Heinz J. Mauelshagen
Did you experience other heavy load hangs in general?
no, none. Neither processor nor i/o load like heavy swapping cause any problems.
In fact, this was the first complete hangup for months.
Is it reproducable then?
Quoted 2 lines
Jan
Signature · 12 lines
Regards,
Heinz -- The LVM guy --
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Heinz Mauelshagen Sistina Software Inc.
Senior Consultant/Developer Bartningstr. 12
64289 Darmstadt
Germany
[email protected] +49 6151 7103 86
FAX 7103 96
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-Quoted 4 lines · Heinz J. Mauelshagen
Quoted 1 line · Jan Niehusmann
In fact, this was the first complete hangup for months.
Is it reproducable then?
I didn't try: There is some important data on the vg so I don't like the idea of linux crashing while changing the vg metadata.
Jan