> Hello Matthew, > Tuesday, September 12, 2006, 7:57:45 PM, you wrote: > MA> Ben Miller wrote: > >> I had a strange ZFS problem this morning. The > entire system would > >> hang when mounting the ZFS filesystems. After > trial and error I > >> determined that the problem was with one of the > 2500 ZFS filesystems. > >> When mounting that users' home the system would > hang and need to be > >> rebooted. After I removed the snapshots (9 of > them) for that > >> filesystem everything was fine. > >> > >> I don't know how to reproduce this and didn't get > a crash dump. I > >> don't remember seeing anything about this before > so I wanted to > >> report it and see if anyone has any ideas. > > MA> Hmm, that sounds pretty bizarre, since I don't > think that mounting a > MA> filesystem doesn't really interact with snapshots > at all. > MA> Unfortunately, I don't think we'll be able to > diagnose this without a > MA> crash dump or reproducibility. If it happens > again, force a crash dump > MA> while the system is hung and we can take a look > at it. > > Maybe it wasn't hung after all. I've seen similar > behavior here > sometimes. Did your disks used in a pool were > actually working? >
There was lots of activity on the disks (iostat and status LEDs) until it got to this one filesystem and everything stopped. 'zpool iostat 5' stopped running, the shell wouldn't respond and activity on the disks stopped. This fs is relatively small (175M used of a 512M quota). > Sometimes it takes a lot of time (30-50minutes) to > mount a file system > - it's rare, but it happens. And during this ZFS > reads from those > disks in a pool. I did report it here some time ago. > In my case the system crashed during the evening and it was left hung up when I came in during the morning, so it was hung for a good 9-10 hours. Ben This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
