Following up with some more information here:
This is the output of "iostat -xen 30"
extended device statistics ---- errors ---
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b s/w h/w trn tot
device
296.8 2.9 36640.2 7.5 7.8 2.0 26.1 6.6 99 99 0 0 0 0
c7d0
296.7 2.5 36618.1 7.5 7.8 2.0 26.1 6.6 99 99 0 0 0 0
c7d1
952.0 2.6 36689.6 7.1 0.5 0.8 0.6 0.8 26 46 0 0 0 0
c8d1
0.0 1.7 0.0 5.8 0.0 0.0 10.7 13.3 1 1 0 0 0 0
c9d0
963.7 2.8 36712.4 6.4 0.5 0.7 0.6 0.7 24 43 0 84 0 84
c9d1
0.0 1.7 0.0 5.8 0.0 0.0 0.0 22.9 0 1 0 0 0 0
c4t15d0
1000.9 3.7 36605.0 6.9 0.0 0.9 0.0 0.9 3 39 0 0 0 0
c4t16d0
1000.7 4.1 36579.6 7.5 0.0 0.9 0.0 0.9 4 37 0 0 0 0
c4t17d0
extended device statistics ---- errors ---
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b s/w h/w trn tot
device
302.6 5.4 36937.5 156.3 7.7 2.0 24.9 6.4 98 99 0 0 0 0
c7d0
303.1 5.4 36879.0 156.2 7.7 2.0 24.8 6.4 98 99 0 0 0 0
c7d1
961.4 5.8 36974.3 155.6 0.5 0.8 0.5 0.8 26 47 0 0 0 0
c8d1
0.0 3.5 0.0 22.7 0.0 0.0 11.1 9.5 1 2 0 0 0 0
c9d0
961.1 5.5 37044.0 154.5 0.6 0.7 0.6 0.8 26 45 0 84 0 84
c9d1
0.0 3.4 0.0 22.7 0.0 0.0 0.0 13.8 0 1 0 0 0 0
c4t15d0
998.1 7.1 36995.6 155.4 0.0 1.0 0.0 1.0 3 40 0 0 0 0
c4t16d0
996.8 7.2 36954.1 156.5 0.0 0.9 0.0 0.9 4 37 0 0 0 0
c4t17d0
extended device statistics ---- errors ---
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b s/w h/w trn tot
device
296.0 3.4 36583.8 155.5 7.8 2.0 26.0 6.6 99 99 0 0 0 0
c7d0
296.3 3.3 36538.6 155.5 7.8 2.0 25.9 6.6 99 99 0 0 0 0
c7d1
920.5 3.4 36649.7 155.0 0.7 0.8 0.7 0.9 29 49 0 0 0 0
c8d1
0.0 1.8 0.0 5.9 0.0 0.0 10.6 11.4 1 1 0 0 0 0
c9d0
948.9 3.3 36689.5 154.3 0.6 0.7 0.6 0.7 25 44 0 84 0 84
c9d1
0.0 1.8 0.0 5.9 0.0 0.0 0.0 26.2 0 1 0 0 0 0
c4t15d0
974.0 3.8 36643.4 154.7 0.0 1.0 0.0 1.0 4 41 0 0 0 0
c4t16d0
976.8 3.8 36634.6 155.6 0.0 1.0 0.0 1.0 4 38 0 0 0 0
c4t17d0
extended device statistics ---- errors ---
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b s/w h/w trn tot
device
301.3 3.6 37353.6 151.9 7.8 2.0 25.5 6.5 99 99 0 0 0 0
c7d0
301.5 3.5 37340.0 151.8 7.8 2.0 25.4 6.5 99 99 0 0 0 0
c7d1
979.5 3.4 37466.4 151.5 0.5 0.7 0.5 0.7 24 45 0 0 0 0
c8d1
0.0 1.7 0.0 5.9 0.0 0.0 12.4 13.7 1 1 0 0 0 0
c9d0
995.8 3.4 37456.7 151.0 0.5 0.7 0.5 0.7 23 43 0 84 0 84
c9d1
0.0 1.8 0.0 5.9 0.0 0.0 0.0 23.5 0 1 0 0 0 0
c4t15d0
1022.7 4.0 37410.8 151.4 0.0 0.9 0.0 0.9 3 38 0 0 0 0
c4t16d0
1020.1 4.4 37473.8 152.0 0.0 0.9 0.0 0.9 4 38 0 0 0 0
c4t17d0
I looked at it for a while and the number of errors is not increasing.. I think
that may have stemmed from when I was testing hot-plugging of the drive and
disconnected it at one point.
The -xen helped me determine that it was disks c7d0 and c7d1 that were slower.
I then tried to look at the cache settings in format:
pfexec format -e
Searching for disks...done
AVAILABLE DISK SELECTIONS:
0. c4t15d0 <DEFAULT cyl 19454 alt 2 hd 255 sec 63>
/p...@0,0/pci1002,5...@3/pci1014,3...@0/s...@f,0
1. c4t16d0 <ATA-SAMSUNG HD103SJ-0001-931.51GB>
/p...@0,0/pci1002,5...@3/pci1014,3...@0/s...@10,0
2. c4t17d0 <ATA-SAMSUNG HD103SJ-0001-931.51GB>
/p...@0,0/pci1002,5...@3/pci1014,3...@0/s...@11,0
3. c7d0 <SAMSUNG-S246JDWZ40807-0001-931.51GB>
/p...@0,0/pci-...@11/i...@0/c...@0,0
4. c7d1 <SAMSUNG-S246JDWZ40807-0001-931.51GB>
/p...@0,0/pci-...@11/i...@0/c...@1,0
5. c8d1 <SAMSUNG-S246JDWZ40807-0001-931.51GB>
/p...@0,0/pci-...@11/i...@1/c...@1,0
6. c9d0 <DEFAULT cyl 19454 alt 2 hd 255 sec 63>
/p...@0,0/pci-...@14,1/i...@1/c...@0,0
7. c9d1 <SAMSUNG-S246JDWZ40806-0001-931.51GB>
/p...@0,0/pci-...@14,1/i...@1/c...@1,0
If I look at c4t1d0, everything is how I expect it to be:
Specify disk (enter its number): 2
selecting c4t17d0
[disk formatted]
/dev/dsk/c4t17d0s0 is part of active ZFS pool tank. Please see zpool(1M).
FORMAT MENU:
disk - select a disk
type - select (define) a disk type
partition - select (define) a partition table
current - describe the current disk
format - format and analyze the disk
fdisk - run the fdisk program
repair - repair a defective sector
label - write label to the disk
analyze - surface analysis
defect - defect list management
backup - search for backup labels
verify - read and display labels
inquiry - show vendor, product and revision
scsi - independent SCSI mode selects
cache - enable, disable or query SCSI disk cache
volname - set 8-character volume name
!<cmd> - execute <cmd>, then return
quit
format> cache
CACHE MENU:
write_cache - display or modify write cache settings
read_cache - display or modify read cache settings
!<cmd> - execute <cmd>, then return
quit
cache> write
WRITE_CACHE MENU:
display - display current setting of write cache
enable - enable write cache
disable - disable write cache
!<cmd> - execute <cmd>, then return
quit
write_cache> display
Write Cache is enabled
write_cache>
If I look at c7d0, I get a message about no "Alt Slice" found and I don't have
access to the cache settings. Not sure if this is part of my problem or not:
AVAILABLE DISK SELECTIONS:
0. c4t15d0 <DEFAULT cyl 19454 alt 2 hd 255 sec 63>
/p...@0,0/pci1002,5...@3/pci1014,3...@0/s...@f,0
1. c4t16d0 <ATA-SAMSUNG HD103SJ-0001-931.51GB>
/p...@0,0/pci1002,5...@3/pci1014,3...@0/s...@10,0
2. c4t17d0 <ATA-SAMSUNG HD103SJ-0001-931.51GB>
/p...@0,0/pci1002,5...@3/pci1014,3...@0/s...@11,0
3. c7d0 <SAMSUNG-S246JDWZ40807-0001-931.51GB>
/p...@0,0/pci-...@11/i...@0/c...@0,0
4. c7d1 <SAMSUNG-S246JDWZ40807-0001-931.51GB>
/p...@0,0/pci-...@11/i...@0/c...@1,0
5. c8d1 <SAMSUNG-S246JDWZ40807-0001-931.51GB>
/p...@0,0/pci-...@11/i...@1/c...@1,0
6. c9d0 <DEFAULT cyl 19454 alt 2 hd 255 sec 63>
/p...@0,0/pci-...@14,1/i...@1/c...@0,0
7. c9d1 <SAMSUNG-S246JDWZ40806-0001-931.51GB>
/p...@0,0/pci-...@14,1/i...@1/c...@1,0
Specify disk (enter its number)[2]: 3
selecting c7d0
NO Alt slice
No defect list found
[disk formatted, no defect list found]
/dev/dsk/c7d0s0 is part of active ZFS pool tank. Please see zpool(1M).
format> cache
`cache' is not expected.
--
This message posted from opensolaris.org
_______________________________________________
zfs-discuss mailing list
zfs-discuss@opensolaris.org
http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
