hi all, suddenly ran into a very odd issue with a 151a server used primarily for cifs... out of (seemingly) nowhere, writes are incredibly slow, often <10kb/s. this is what zpool iostat 1 looks like when i copy a big file:
storepool 13.4T 1.07T 57 0 6.13M 0 storepool 13.4T 1.07T 216 91 740K 5.58M storepool 13.4T 1.07T 127 182 232K 1004K storepool 13.4T 1.07T 189 99 361K 5.47M storepool 13.4T 1.07T 357 172 910K 949K storepool 13.4T 1.07T 454 222 1.42M 2.14M storepool 13.4T 1.07T 55 209 711K 1.05M basically instead of the usual txg 5-second write pattern zfs writes to the zpool every second. this is certainly not an issue with the disks... iostat -En shows no errors and -Xn shows that the disks are barely being used (<20%). the only situation in which i've seen this before was a multi-terabyte pool with dedup=on and constant writes (goes away once you turn off dedup). no dedup anywhere on this zpool, though. arc usage is normal (total ram is 12gb, max is set to 11gb, current usage is 8gb). pool is an 8-disk raidz2. any ideas? pretty stumped. milosz _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
