[Gluster-users] Replication not working on server hang

David Saez Padros david at ols.es
Sun Aug 30 11:13:27 UTC 2009


>> The discussion in this
>> thread is about those situations where the server (machine
>> hosting the
>> storage/posix volume) hangs the backend filesystem (verified by
>> kernel console logs) and that in turn results in the mountpoint
>> hang.
> That seems to be the case in Stephan's situation, yes, as we have
> evidence from reiserFS. What evidence have we in the ext3 cases?

just searching on the net i found similar cases that where due
to the sata driver (altough in our case all disks ara sas), so
the problem could also be due to the disk driver or to some other
piece of the system. Having both reiserfs and ext3 have a bug that
produces this hangs is very unlikely. Maybe we could try to see
if all the ones experiencing this problem have something in common.
In our case the hanged server is:

Dell PE2900
2 x X5470 at 3.33 8Gb RAM
SAS 6/iR Integrated RAID Controller
7 x SEAGATE ST31000640SS
1 x SEAGATE ST3300656SS
Debian testing
Kernel 2.6.26-2

server hanged when writing to a unified volume (7 x 1Tb +
namespace and system on the ST3300656SS)

Best regards ...

    David Saez Padros                http://www.ols.es
    On-Line Services 2000 S.L.       telf    +34 902 50 29 75

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