Hi, I have a question on bug 9646 - Server went back in time.
I had an OSS crash and had to pull the power. After mounting lustre again I see the following on one of my clients: (import.c:909:ptlrpc_connect_interpret()) b-OST0010_UUID went back in time (transno 12901362807 was previously committed, server now claims 0)! See https://bugzilla.lustre.org/show_bug.cgi?id=9646 This bug description suggest that there are commits lost in hardware cache - but how can it loose all commits (transno is zero)? (btw, cache is battery backup up) On the client that I saw this I had previosly deactivated the import bacause of the crash. Is this the reason I'm seeing this transno as zero ? (full dmesg below) Thanks, Jakob 2860:0:(import.c:508:import_select_connection()) b-OST0010-osc-ffff81022ce89800: tried all connections, increasing latency to 27s setting import backup-OST0010_UUID INACTIVE by administrator request 8281:0:(import.c:508:import_select_connection()) b-OST0010-osc-ffff81022ce89800: tried all connections, increasing latency to 32s 167-0: This client was evicted by b-OST0010; in progress operations using this service will fail. b-OST0010-osc-ffff81022ce89800: Connection restored to service b-OST0010 using nid 172.16.14...@tcp. 11-0: an error occurred while communicating with 172.16.14...@tcp. The ost_statfs operation failed with -11 ... 11-0: an error occurred while communicating with 172.16.14...@tcp. The obd_ping operation failed with -107 b-OST0010-osc-ffff81022ce89800: Connection to service backup-OST0010 via nid 172.16.14...@tcp was lost; in progress operations using this service will wait for recovery to complete. 2859:0:(import.c:909:ptlrpc_connect_interpret()) b-OST0010_UUID went back in time (transno 12901362807 was previously committed, server now claims 0)! See https://bugzilla.lustre.org/show_bug.cgi?id=9646 167-0: This client was evicted by backup-OST0010; in progress operations using this service will fail. b-OST0010-osc-ffff81022ce89800: Connection restored to service b-OST0010 using nid 172.16.14...@tcp. _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
