Command to check Disk IO

What is best command to monitor disk IO on a ZFS file system?
I know zpool iostat, but I'm looking equivalent to iostat -xtc on zpool iostat?

There is no replacement of classic iostat for ZFS, Because of transactional nature of ZFS service time is meaningless.
You may use zpool iostat or DTrace for special cases

Similar Messages

Checking Disk Consistency on Startup

Hello everyone,
The past few days I have been occasionally getting the Checking Disk Consistency message on startup. It is to my understanding that this is a sign of a potentially dieing harddrive. My laptop is only about a year and a half old, so I sure as heck hope my harddrive isn't dieing already. I'm at work right now so I'm not 100% sure of my model, but I believe it is a Toshiba Satellite P500/P505.
I have had absolutely no problems with my laptop until about 2 days ago, when I started getting these messages. My virus protection is Kaspersky 2011, which has resulted in 0 viruses the past year and a half.
My laptop does start up, despite the error. Of the 4 times this has occurred to be thus far, one of those times my computer was effectively a vegetable. Froze when trying to do anything (except for startup processes) and even froze when I told it to shut down.
Any help is greatly appreciated.

I don't know if this is still the case, but I seem to recall that Kaspersky breaks the heck out of chkdsk. I found a twenty eight page thread on the topic over there, http://forum.kaspersky.com/index.php?showtopic=14995&hl=iswift, thought it does look a wee bit dated.
EDIT: This may be relevant and I certainly recommend giving it a shot.
Chckdsk
Start Windows in "Safe mode with Command Prompt"
Type:
chdsk /f
and hit enter. (you could also do /r for completeness' sake, though that will take a bit longer.)
Chkdsk will probably want to schedule a check at the next boot, say Yes
then Type
shutdown -r -t 01
Your machine will reboot, and should run a chkdsk on start without conflict. If at that point it still hang, the issue is probably a bit more severe than just a program conflict.
www.google.com

Ran Windows 7 Check Disk on iPod - Songs Now Missing?

I posted this on another forum and didn`t get a response so I`ll ask it here:
Problem description: I connected my 80GB iPod Video to my netbook and Windows 7 came up asking me if I wanted to scan and fix problems on my iPod. I foolishly said okay and told it to, selecting both Automatically Fix File System Errors and Scan For and Attempt Recovery of Bad Sectors. It took about an hour to complete and afterwards when it connected in iTunes, it didn't recognize it despite recognizing it before check disk. I've connected it dozens of times to my netbook with no problems before today. iTunes began syncing (which it wasn't supposed to do) and freed up about 7GB of space on it before I realized what it was doing. Right now, in iTunes, Winamp and the iPod itself, no songs, videos, playlists or anything show up in it. iTunes claims 66GB is being taken up by "Other" with 7.5GB of "Free Space." Now, when I go into the iPod through windows explorer and go into the folder iPod_Control, all the music still seems to be there and I can listen to the songs in Winamp by opening them from iPod_Control, so why can't iTunes or the iPod find the files? Is there a good data recovery fix for this? Is there some hopefully easy fix I don't see?
Attempted fixes: Looked for iPod recovery programs, saw a trillion listed on Google of varying degrees of authenticity. Googled for ipod-related check disk problems and found a blog saying it erased his playcounts (oh no). Tried disconnecting and reconnecting iPod. Tried disconnecting, resetting and reconnecting iPod. Tried rebooting computer and reconnecting iPod. Tried connecting iPod to different computer it connected to before. Same story each time.
Recent changes: Windows 7 Check Disk, that's all I've done to it. It worked fine yesterday, last night and this morning until I ran Check Disk.
Operating system: 32-Bit Windows 7, evaluation copy, Build 7100.
System specs: Asus 1005HA: Intel Atom N280, 2GB Crucial Notebook Memory, Mobile Intel Express 945GME, 160GB HDD. iPod: Model MA448C, 5.5 Generation 80GB Video iPod, Software Version 1.3. iTunes Version 8.2.1.6
I have Googled and read the FAQ: Yes
What would cause this to happen? Why can't anything see the songs unless I manually open them? How do I fix this?

After countless days trying to solve this problem, I feel I can now add to the few solutions presented on the various forums of the internet. I'll post here because 1: i'm a mac user for everyday life although like most have as many pc's as well. 2: I already have a login for these forums!
okay so i tried everything from re-burns to usb install (which I could not complete because removable drives are not recognized by xp and I don't have a vista system). The problem for me ended up being because the DVD drive was plugged into the primary master ide channel. My hard drive for the unit i was installing windows on is sata and was configured as such (not bridged into IDE channel by bios). So in a nutshell it seems like the hard drive and the DVD drive are nit picky in regards to the IDE configuration of the drives themselves. This won't help for virtualization on a mac pro I realize but nonetheless is food for thought hopefully for all the people searching for " windows 7 install cd/dvd device driver missing " in their search engine!
Oh boy one more reason to love mac's
Christos

OraRRP Error with "Unable to copy data file;Error code 2, check disk space"

Hi,
Some users get this message -"Unable to copy data file;Error code 2, check disk space" when run report with orarrp, but most users do not get it.
I check free space at both server and client side, they are very sufficient.
I also checked directory exists for REPORTXX_TMP variable.
My user call reports via URL (rwservlet) and it occur for all reports.
How I can solve this problem?
Thanks in advance.
Tawatchai R.

Hi,
have the same problem now. One user has temporarily problems to download .rrpa files via URL (rwservlet) request. Error code: -"Unable to copy data file;Error code 2, check disk space". Did you get a solution??
Thanks in advance. Axel

Check Disk Runs on Plug in

Everytime I plug my Ipod into the firewire connector, it starts running the check disk program on the Ipod and the Ipod is not recognized by ITunes or even on the desktop. Although the checkdisk program says everything is okay on the disk, if I touch a button on the Ipod (when it is plugged into the Imac) the checkdisk program starts running all over again.
This all started a few weeks ago. I ran the Ipod updater and reset everything and loaded some music. There were some initial glitches uploading music from Itunes, but everything seemed to work okay. Then, the Ipod started freezing during songs on playback. At first, when I plugged in, the check disk ran, but the Ipod was eventually recognized by my mac. Now, the Ipod does not appear at all, but just runs the checkdisk. When the checkdisk is finished running, if you press a button it just runs again.
Interestingly, this all corresponded roughly in time with my upgrade from a 2002 G4 Imac to a 2006 Intel core duo. My Ipod is 20GB from 2002 (pre-dock).
Any ideas or should I just upgrade to a new pod?

If the disks on the servers are mapped as networks drives on your PC then the disk size and free space shows up in "My Computer" if you set it to show details. (At least it does on Win2000 on the computer i'm sending this from).

External Hard Drives and Check Disk

I have an external NTFS hard drive that for some reason when I go to do an Error-Check with Window's Check Disk feature it says it can't check the disk while it is in use and I then proceed to schedule a scan at start up.
This is an External USB device and it appears you can not do scheduled scans on them. I restart the computer and nothing happens, no scan.
Can we get some support for scheduled scans on external hard drives?

Did you try the CHKDSK /X option? CHKDSK /? gives you a list of options.
CHKDSK [volume[[path]filename]]] [/F] [/V] [/R] [/X] [/I] [/C] [/L[:size]] [/B]
volume          Specifies the drive letter (followed by a colon),
                  mount point, or volume name.
filename        FAT/FAT32 only: Specifies the files to check for fragmentation.
/F              Fixes errors on the disk.
/V              On FAT/FAT32: Displays the full path and name of every file
                  on the disk.
                  On NTFS: Displays cleanup messages if any.
/R              Locates bad sectors and recovers readable information
                  (implies /F).
/L:size         NTFS only: Changes the log file size to the specified number
                  of kilobytes. If size is not specified, displays current
                  size.
/X              Forces the volume to dismount first if necessary.
                  All opened handles to the volume would then be invalid
                  (implies /F).
/I              NTFS only: Performs a less vigorous check of index entries.
/C              NTFS only: Skips checking of cycles within the folder
                  structure.
/B              NTFS only: Re-evaluates bad clusters on the volume
                  (implies /R)
The /I or /C switch reduces the amount of time required to run Chkdsk by
skipping certain checks of the volume.
Thanks,
-Saravana

I purchased a IMac in Feb later I added a Seagate ext. hard drive. On April 29 I received an errors that the ext. Drive may be a read only and not backing up files. I'm unable to check disk permission or correct errors. Help would be appreciated.

I purchased a IMac in Feb later I added a Seagate ext. hard drive. On April 29 I received an errors that the ext. Drive may be a read only and not backing up files. I'm unable to check disk permission or correct errors. Help would be appreciated.

Click on the hard drive on the desktop, then File > Get Info. What does it say about permissions? If this is just a data drive you may want to consider "ignore ownership on this volume".
Otherwise I can only say I have not been reading good things about Seagate drives recently. I have some of their rock-solid ones from about 10 years ago (still running well), but now...?

Is there an NXOS command to check to see if traffic is being dropped from traversing a Nexus vPC link?

Is there an NXOS command to check to see if traffic is being dropped from traversing a Nexus vPC link?

iTunes 11 seems to shuffle just fine for me.
You can restore much of the look & feel of the previous version with these shortcuts:
Ctrl-B to turn on the menu bar.
Ctrl-S to turn on the sidebar (your device should be listed here as before).
Ctrl-/ to turn on the status bar.
Click the magnifying glass top right and untick Search Entire Library to restore the old search behaviour.
If you want to roll back to iTunes 10.7 first download a copy of the 32 bit installer or 64 bit installer as appropriate, uninstall iTunes and suppporting software, i.e. Apple Application Support & Apple Mobile Device Support. Reboot. Restore the pre-upgrade version of your library database as per the diagram below, then install iTunes 10.7.
See iTunes Folder Watch for a tool to scan the media folder and catch up with any changes made since the backup file was created.
tt2

SQL Command to Check ABAP Support Patches and JSPM Patch

Dear all,
We have setup an DiasterRecovery System of the BI Production System .
os: aix 6.1
Database: Oracle 11.2
BUT , Our DR System is in Physical Standby mode.
Generally, we see the ABAP Patch version in SAP GUI ( System -- System status).
Likewise, Is there any SQL Command available to check the version ABAP Patches (
SAP_BASIS, SAP_ABAP, PI_Cont add on, PI_BASIS AND BW Patch - SAP_BW)
Is there any sql command to check the version of JSPM or JAVA Patch
regards,
gayathri.K

Hi Gayathri,
BUT , Our DR System is in Physical Standby mode.
Generally, we see the ABAP Patch version in SAP GUI ( System -- System status).
Likewise, Is there any SQL Command available to check the version ABAP Patches (
SAP_BASIS, SAP_ABAP, PI_Cont add on, PI_BASIS AND BW Patch - SAP_BW)
You can perform sql query on CVERS table.
For eg: Select * from <schema>.CVERS ;
This will list all the entries with all the columns from CVERS table.
Hope this helps.
Regards,
Deepak Kori

What is the command to check if there are any active calls before restarting the voice router?

what is the command to check if there are any active calls before restarting the voice router? thanks

Hi.
I can suggest show call active voice or show voice call status or show sip-ua call brief in case of SIP TSP.
HTH
Regards.
Carlo

Looking for a command to check the filling level of the ASIC netwflow table on Cat3850

Hello.
I am searching for a command to check the filling level of the flexible netflow table in the ASIC of the Cat3850.
There is a show command on the FNF Cache which shows me any entry numbers but this values is confusing me.
The Cat3850 is able to have 16K egress and 8K ingress FNF table entries according to the FNF guide.
But the show command gives me a value of >33k.
Does anyone have an explanation on this?
How can I check the real filling Level of the FNF table in the ASIC?
Thank you very much
Karl
show flow monitor Solarwinds-OUT cache
Cache type:                               Normal (Platform cache)
Cache size:                              Unknown
Current entries:                           33256
Flows added:                              626755
Flows aged:                               560235
    - Active timeout      (    60 secs)     410932
    - Inactive timeout    (    15 secs)     149303

myle wrote:I don't want a solution with GUI because my laptop is 6 years old.
I completely agree with all the above and I only use mutt. But I use mutt because I *prefer* cli apps.
If you're just going with cli because you don't think your computer can handle gui apps ... then I don't think you've given the lightweight gui apps a fair shake.
Yes, evolution and thunderbird would suck on an old computer (but IMHO they suck on a new one too![1]).
Claws (or/aka sylpheed) is a nice little mail app that should work nicely on any computer that is running X. I'm sure there are other lightweight gui mail apps to.
Again, I love mutt. But I don't think having an old computer is the reason to favor mutt over a good gui app if you would otherwise prefer the latter.
[1]: Not meant as a flame, rather an expression of my preference for software that does one thing and does it well. These tools both, while they may be well written, try to do so much that I have never been pleased with the outcome.
Last edited by Trilby (2012-08-14 11:57:35)

Is there any command to check the status of CWAI?

I want to check if CWAI is currently on or off (start or reset or stop). Is there any convenient command to check?

Hello
You can check up on the CWAIReadSpec which has a read only property called AcquisitionState. Check out the following following KB about how to use this object.
Using the ComponentWorks AIReadSpec object in Visual C++
http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/4a44123c8de6bc2d862565e6006d3d24?OpenDocument
And you can check out the function details in the Measurement Studio Help
I hope this helps
Bilal Durrani
NI
Bilal Durrani
NI

What is the command to check the changes in the spanning-tree topology?

What is the command to check the changes in the spanning-tree topology?

Hi,
Few commands which would help are:
1- Show spanning-tree detail
2-show spanning-tree detail | in ieee|from|occur|is exec >> This will give from were the changes occuring- Ex:
C6K1#show spanning-tree detail | in ieee|from|occur|is exec
VLAN0001 is executing the rstp compatible Spanning Tree protocol
Number of topology changes 9536 last change occurred 00:00:29 ago
from GigabitEthernet4/6
3- show spanning-tree active *& show spanning-tree root >> Will give you the root information.
4- show spanning-tree inconsistentports >> If there are any port which are inconsistent state due to STP features.
STP running MST:
===============
show spanning-tree mst configuration >> Need to check and match the same outputs with the other switches running in the same MST domain/region.
show spanning-tree mst detail
show spanning-tree mst <name of the region>
Debug on STP:
============
debug spanning-tree events/bpdu >> would be good but to be run with more cautious.
HTH
Inayath
*Plz rate if this info is usefull.

PAS command to check model?

Hi,
is there any PAS command to check if there are errors in a PAS model. I only found the xray in the PAS help, but this command is not returning anything. i am not even sure if its suitable.
Best regards,
Eike

Hi Pedro and Bob,
i had a problem with loading a model via entry and approval. Some measures were causing PAS to stop (without any log entry or further notice). I could itentify some of the PAS measures with SEL VAR * and LIST. Some others i could find with SEL VAR [name] and the SNAPSHOT command. These measures were created with the BI Connector and based on SAP BW measures.
we could identify the corrupt PAS measures like this.
So my question is quite general. is there any PAS command which can check a model on such broken measures.
Best regards
Eike

Command to check active radius server in the pool

Hi,
Is there a command on WLC to check the current active radius server in the list?
I have configured multiple radius servers and noticed in the logs the radius servers were often deactived and activated. I would like to see which is the current active radius server for a WLAN.
Thanks

There isn't a command to check. You could enable fallback or just see the log on which server was the last one to be deactivated.
http://www.cisco.com/en/US/products/ps6366/products_configuration_example09186a008098987e.shtml
Sent from Cisco Technical Support iPhone App

Command to check Disk IO

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