Hi all
I plan to install Solaris 10U6 on some SPARC server using ZFS as root pool, whereas I would like to keep the current setup done by VxVM:
- 2 internal disks: c0t0d0 and c0t1d0
- bootable root-volume (mirrored, both disks)
- 1 non-mirrored swap slice
- 1 non-mirrored slices for Live... (1 Reply)
Hi guys,
We had created a pool as follows:
zpool create filing_pool raidz c1t2d0 c1t3d0 ........
Due to some requirement, we need to destroy the pool and re-create another one. We wish to know now which disks have been included in the filing_pool, how do we list the disks used to create... (2 Replies)
I need to migrate an existing raidz pool to a new raidz pool with larger disks. I need the mount points and attributes to migrate as well. What is the best procedure to accomplish this. The current pool is 6x36GB disks 202GB capacity and I am migrating to 5x 72GB disks 340GB capacity. (2 Replies)
Other than export/import, is there a cleaner way to rename a pool without unmounting de FS?
Something like, say "zpool rename a b"?
Thanks. (2 Replies)
installed Solaris 11 Express on my server machine a while ago. I created a Z2 RAID over five HDDs and created a few ZFS filesystems on it.
Once I (unintentionally) managed to fill the pool completely with data and (to my surprise) the filesystems stopped working - I could not read/delete any... (3 Replies)
I messed up my pool by doing zfs send...recive So I got the following :
zpool list
NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT
rpool 928G 17.3G 911G 1% 1.00x ONLINE -
tank1 928G 35.8G 892G 3% 1.00x ONLINE -
So I have "tank1" pool.
zfs get all... (8 Replies)
I have a branded zone txdjintra that utilizes a pool named Pool_djintra that is no longer required. There is a 150 Gig Lun assigned to the pool that I need to reassign to another branded zone txpsrsrv07 with a pool named Pool_txpsrsrv07 on the same sun blade. What is the process to do this?
... (0 Replies)
I have a newly created zpool, and I have set compression on, for the whole pool:
# zfs set compression=on newPool
Now I have zfs send | zfs receive lot of snapshots to my newPool, but the compression is gone. I was hoping that I would be able to send snapshots to the new pool (which is... (0 Replies)
I have installed FreeBSD onto a raw image file using QEMU Emulator successfully. I have formatted the image file using the ZFS file system (ZFS POOL).
Using the following commands below I have successfully mounted the image file ready to be opened by zpool
sudo losetup /dev/loop0 .img sudo... (1 Reply)
Discussion started by: alphatron150
1 Replies
LEARN ABOUT HPUX
vxcached
vxcached(1M)vxcached(1M)NAME
vxcached - resize cache volumes when required
SYNOPSIS
/etc/vx/bin/vxcached [-v] [mail-address ...]
DESCRIPTION
The Veritas Volume Manager cache daemon, vxcached, is invoked by the VxVM kernel to monitor the cache objects that are used by space-opti-
mized snapshots. When usage of a cache volume by space-optimized snapshots reaches the high watermark level that has been set for the
cache, vxcached automatically grows the cache volume if this is required and configured.
The -v option enables the daemon in verbose mode. If no mail addresses are given as arguments, mail is sent to root.
If the autogrow feature has been enabled on a cache object, the values of the highwatermark, autogrowby and maxautogrow attributes for the
cache object determine the behavior of vxcached:
o When cache usage reaches the high watermark value, highwatermark, (default value is 90 percent), and the new required cache size would
not exceed the value of maxautogrow (default value is twice the size of the cache volume in blocks), vxcached grows the size of the
cache volume by the value of autogrowby (default value is 20% of the size of the cache volume in blocks).
o When cache usage reaches the high watermark value, and the new required cache size would exceed the value of maxautogrow, vxcached
deletes the oldest snapshot in the cache. If there are several snapshots with the same age, the largest of these is deleted.
If the autogrow feature has been disabled on a cache object:
o When cache usage reaches the high watermark value, vxcached deletes the oldest snapshot in the cache. If there are several snapshots
with the same age, the largest of these is deleted. If there is only a single snapshot, the snapshot is detached and marked as invalid.
The values of the highwatermark, autogrowby and maxautogrow attributes can be set when a cache object is created using vxmake. If neces-
sary, you can use the vxcache set command to change the values of these attributes for an existing cache.
NOTES
The vxcached daemon is started automatically if a license for the FastResync feature is already present on the system. If you add such a
license while VxVM is running, you can either start vxcached manually, or shut down and reboot the system.
Killing the vxcached process stops it from removing snapshots. The daemon can be prevented from being started by commenting out its entry
in the startup script, /sbin/init.d/vxvm-recover.
The vxcached daemon does not remove snapshots that are currently open, and it does not remove the last or only snapshot in the cache.
If the cache space becomes exhausted, the snapshot is detached. If this happens, the snapshot is unrecoverable and must be removed manu-
ally. Enabling the autogrow feature on the cache helps to avoid this situation occurring. However, for very small caches (of the order of
a few megabytes), it is possible for the cache to become exhausted before the system has time to respond and grow the cache. In such
cases, either increase the size of the cache manually, or reduce the value of highwatermark.
You can use the maxautogrow attribute to limit the maximum size to which a cache can grow. To estimate this size, consider how much the
contents of each source volume are likely to change between snapshot refreshes, and allow some additional space for contingency.
SEE ALSO vxcache(1M), vxintro(1M), vxmake(1M), vxsnap(1M)VxVM 5.0.31.1 24 Mar 2008 vxcached(1M)