similar to: nfsv3 provider: "failed to grab process"

I''m troubleshooting an I/O performance problem with one of our applications that does a lot of writing, generally blocks just over 32K, sequentially writing large files. It''s a Solaris 10 x86 system with UFS disk. We''re often only seeing disk write throughput of around 6-8MB/s, even when there is minimal read activity. Running iosnoop shows that most of the physical

I am teaching a DTrace class and a student noticed that 2 iosnoop scripts run in two different windows were producing different results. I was not able to answer why this is. Can anyone explain this. Here are the reults from the two windows: # io.d ... sched 0 <none> 1024 dad1 W 0.156 bash 1998

I''m interested in monitoring the amount of stack used by a multi-threaded program. I assume ''stackdepth'' built-in would be useful...but not sure. Been through demo''s, ToolKit, and internals..but it''s just not clicking for me yet. Not sure how to measure start/end of stack size dynamically...Anyone know how to break this down? This message posted from

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, I'm using Dovecot 1.2.9. I configured it like this: % ./configure --prefix=/opt/rt --libdir=/opt/rt/lib \ --libexecdir=/opt/rt/lib [other args...] It compiled fine, but failed to install, because it tries to install a directory called <libdir>/dovecot/imap, and a file called <libexecdir>/dovecat/imap, which obviously

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 hi, i have a system connected to an external DAS (SCSI) array, using ZFS. the array has an nvram write cache, but it honours SCSI cache flush commands by flushing the nvram to disk. the array has no way to disable this behaviour. a well-known behaviour of ZFS is that it often issues cache flush commands to storage in order to ensure data

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 hi, i have two systems, A (Solaris 10 update 5) and B (Solaris 10 update 6). i''m using ''zfs send -i'' to replicate changes on A to B. however, the ''zfs recv'' on B is running extremely slowly. if i run the zfs send on A and redirect output to a file, it sends at 2MB/sec. but when i use ''zfs send

Hello, I use Brendan''s sysperfstat script to see the overall system performance and found the the disk utilization is over 100: 15:51:38 14.52 15.01 200.00 24.42 0.00 0.00 83.53 0.00 15:51:42 11.37 15.01 200.00 25.48 0.00 0.00 88.43 0.00 ------ Utilisation ------ ------ Saturation ------ Time %CPU %Mem %Disk %Net CPU Mem

Author: maybee Repository: /hg/zfs-crypto/gate Revision: 2dd24a5efe8bb703f8a0b96d0cbaab6d4f744456 Log message: 6413573 deadlock between fsflush() and zfs_create() 6416101 du inside snapshot produces bad sizes and paths Files: update: usr/src/uts/common/fs/zfs/sys/zfs_znode.h update: usr/src/uts/common/fs/zfs/zfs_dir.c update: usr/src/uts/common/fs/zfs/zfs_vnops.c update:

Author: thurlow Repository: /hg/zfs-crypto/gate Revision: 1713bd2d1b7b2466298721235c1f98e4e01b0be8 Log message: 6344186 NFSv3 needs to support .zfs (like NFSv4 already does) Files: update: usr/src/cmd/fs.d/nfs/mountd/mountd.c update: usr/src/cmd/fs.d/nfs/mountd/mountd.h update: usr/src/cmd/fs.d/nfs/nfslog/fhtab.h update: usr/src/cmd/fs.d/nfs/nfslog/nfslog_elf.c update:

Hi, I am new to Dtrace. I am trying to run nfsv3rwsnoop.d script found on nfsv3 provider wiki page. I received following error: # ./nfsv3rwsnoop.d dtrace: failed to compile script ./nfsv3rwsnoop.d: line 12: failed to grab process 3 Line 12 is "nfsv3:::op-read-start" To use nfsv3 provider, do I need to install some additional package? If so, what is the package called? The system

I will soon be implementing a Fedora Core 4 (or 5), 2.8MHz Xeon, 1GB RAM, 2.5TB storage, gigabit ethernet server which will hold backup copies of about 200 DVDs. These DVDs will be played through a gigabit LAN to another Fedora Core 4 (or 5) workstation using xine which will then output video to the projector in my living room. I am not asking to start a competition or war on the list. My

Howdy, I wrote a pair of scripts to measure file and NFSv3 operations, and thought I would share them with the folks on the list. You can view the script output by pointing your browser at the following URLs: Per Process NFSv3 Client statistics (inspired by fsstat/nfsstat): http://daemons.net/~matty/code/nfsclientstats.pl.txt Per Process File Operations (inspired by fsstat):

I have several CentOS 5.2 workstations in a Sun Solaris NIS domain and Solaris NFS servers (all Solaris 8). Frequently the auto mounter hangs with very high utilization -- I think it might be due to the Solaris 8 servers only using NFSv3 and the CentOS wanting to use NFSv4. How can I set the system to use NFSv3 globally, even for auto mount maps from my ancient Solaris NIS domain (which I wold

Hi all, I have two centos6.2 servers acting as a nfs servers (nfsv3 for now). Due to some security requeriments, I need to share some folders using nfsv4 (with kerberos auth), but I have a doubt. Is it possible to serve shared folters using nfsv3 and nfsv4 (with kerberos auth) at the same time in the same server with centos6?? Nfsv3 is used to serve storage for three ESXi servers (and these

Does anyone, is anyone running Xen on NFSv3 successfully? What are some of your pain points/success points? Have you tried a clustered file system with better results such as DRBD or GFS? TIV, Matt _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users

We recently had a strange NFS performance anomaly between a V880 running snv_124 and two NetApp filers. To investigate, a DTrace NFSv4 (and eventually NFSv3) client provider would been extremely helpful. Unfortunately, all I could find were a request for code review of a v3 client provider and another request for help developing a v4 provider. Nothing seems to have come from those initiatives,

Hello, I'm using rsync 3.0.9 to backup several NFS shares from a fileserver, mounted over NFSv3, to a local RAID on a backup server. Both servers are running Ubuntu 12.04 server LTS. The fileserver's filesystem is ext4. The NFS shares are mounted on the backup server as follows: fileserver:/mnt/storage/share1 /mnt/share1 type nfs (ro,tcp,bg,soft,intr,addr=192.168.1.1)

Hi. T2000 1.2GHz 8-core, 32GB RAM, S10U3, zil_disable=1. Command ''zpool export f3-2'' is hung for 30 minutes now and still is going. Nothing else is running on the server. I can see one CPU being 100% in SYS like: bash-3.00# mpstat 1 [...] CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl 0 0 0 67 220 110 20 0 0 0 0

When somebody is hammering on the system, I want to be able to detect who''s doing it, and hopefully even what they''re doing. I can''t seem to find any way to do that. Any suggestions? Everything I can find ... iostat, nfsstat, etc ... AFAIK, just show me performance statistics and so forth. I''m looking for something more granular. Either *who* the

After building and install dovecot I then made my own self signed SSL certs and placed them carefully into the correct places : Thus : # grep -v "^#" dovecot-openssl.cnf | grep -v "^$" [ req ] default_bits = 1024 encrypt_key = yes distinguished_name = req_dn x509_extensions = cert_type prompt = no [ req_dn ] C=CA ST=Ontario L=Toronto O=Blastwave OU=IMAP server