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Questions tagged [solaris]

Solaris is a UNIX certified operating system owned and developed by Oracle for SPARC, x86 and x86-64 processor architectures.

Solaris is a UNIX certified operating system for SPARC , i86,x86 and x86-64 processor architectures. It was developed by SUN Microsystems until 2010 when the company was acquired by Oracle Corp. Subsequently Solaris has been renamed Oracle Solaris.

1162 questions
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How to read backward from the end of file in less or more?

I've found one way so far: less +G filename, but it scrolls up line-by-line only with ↑. What's a more powerful less usage which provides scrolling by page, backward pattern search, and so on?
yetanothercoder
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How do I sleep for a millisecond in bash or ksh

sleep is a very popular command and we can start sleep from 1 second: # wait one second please sleep 1 but what the alternative if I need to wait only 0.1 second or between 0.1 to 1 second ? remark: on linux or OS X sleep 0.XXX works fine , but…
yael
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108
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6 answers

High load average, low CPU usage - why?

We're seeing huge performance problems on a web application and we're trying to find the bottleneck. I am not a sysadmin so there is some stuff I don't quite get. Some basic investigation shows the CPU to be idle, lots of memory to be available,…
Spiff
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What does * * * * * (five asterisks) in a cron file mean?

The first noncomment line in a legacy crontab file begins with five asterisks: * * * * * ([a_command]) >/dev/null 2>&1 The authors are gone, so I do not know their intent. What does all-wildcards mean to (Solaris 8) cron? The betting here is…
Thomas L Holaday
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36
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8 answers

How to reduce memory usage on a Unix webserver

I'm currently using a Joyent Accelerator to host my webapps, and it's working fine, however I need to reduce costs so I'm downgrading my current plan and that imposes some new memory limits (256M rss, 512M swap). I wasn't too far over them…
User920951
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ZFS performance: do I need to keep free space in a pool or a file system?

I know that the performance of ZFS heavily depends on the amount of free space: Keep pool space under 80% utilization to maintain pool performance. Currently, pool performance can degrade when a pool is very full and file systems are updated…
Pavel
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27
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2 answers

How large is my ZFS dedupe table at the moment?

I have read a lot of information about planning RAM requirements forZFS deduplication. I've just upgraded my file server's RAM to support some very limited dedupe on ZFS zvols which I cannot use snapshots and clones on (as they're zvols formatted as…
Josh
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26
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4 answers

Moving a ZFS filesystem from one pool to another

I am extending a Solaris 10 U8 server with an extra storage pool in addition to the root rpool. What is the most effective / simple / reliable way of moving particular ZFS filesystem(s) from rpool to this new storage pool? Can it be done online or…
Asgeir S. Nilsen
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23
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2 answers

How can I add one disk to an existing raidz zpool?

I have an OpenSolaris server with a zpool backupz comprised of four SCSI drives: -bash-3.2# zpool status backupz pool: backupz state: ONLINE scrub: none requested config: NAME STATE READ WRITE CKSUM backupz ONLINE…
Josh
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22
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7 answers

Can I use SSH key authentication to log into a remote system with a different username?

Suppose I have a remote system named "remotesystem", and a user account "foouser" on that system. I know that on my local system, I can generate an SSH key pair as local user "foouser", put the public key in the "/home/foouser/.ssh/authorized_keys"…
Matt
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3 answers

Proper way to create a zfs off an existing directory?

Lets say I have an rpool with etc/ as a regular directory within it and now I want to create a separate zfs rpool/etc, obviously inheriting all the data I had in original /etc. What would be the most proper and safe way to do so?
Yurii Rashkovskii
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18
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4 answers

SSH into NAT'd servers on the same public IP address

I am trying to SSH from in office X to a few Linux boxes in office Y. The Linux boxes in office Y are behind NAT and each run on their own ports. I can successfully reach all of them through SSH, but I cannot authenticate. I was able to SSH into the…
Copy Run Start
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5 answers

How do I recover free space on deleted files without restarting the referencing processes?

When big files are deleted on a server, the files might still be referenced by processes, so the file system doesn't have more free space. I tried to use lsof, but it seems it didn't list the deleted files. fuser -c did better work, but the list of…
ujjain
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16
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5 answers

List supported terminal types?

Is there a portable way to list supported terminal types on all NX systems? If not, what's the best way to get this list on Solaris?
pra
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15
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2 answers

How to use a file as a zpool?

If I do dd if=/dev/zero of=/tank/test/zpool bs=1M count=100 how can I treat the file /tank/test/zpool as a vdev, so I can use it as a zpool? It is for zfs testing purposes only.
Jasmine Lognnes
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