He says he's using FreeBSD. ZFS recorded names like "ada0" which always means
a whole disk.
In any case FreeBSD will search all block storage for the ZFS dev components if
the cached name is wrong: if the attached disks are connected to the system at
all FreeBSD will find them wherever they ma
I am seeing a zfs recv bug on FreeBSD and am wondering if someone could test
this in the Solaris code. If it fails there then I guess a bug report into
Solaris is needed.
This is a perverse case of filesystem renaming between snapshots.
kraken:/root# cat zt
zpool create rec1 da3
zpool create
ZFS is a copy-on-write filesystem. The important point is that if a single
byte in a file is changed then the containing block is rewritten elsewhere,
requiring that the file block pointers be rewritten - and when these are
rewritten they are likewise written elsewhere and pointers to *them* ne
> On Thu, 8 Jul 2010, Edward Ned Harvey wrote:
> Yep. Provided it supported ZFS, a Mac Mini makes for
> a compelling SOHO server.
Warning: a Mac Mini does not have eSATA ports for external storage. It's
dangerous to use USB for external storage since many (most? all?) USB->SATA
chips discard S
If these 6 Gb/s controllers are based on the Marvell part I would test them
thoroughly before deployment - those chips have been problematic.
A PCI-e SSD card is likely much faster than any SATA SSD.
--
This message posted from opensolaris.org
___
zfs-
Under FreeBSD I've seen zpool scrub sustain nearly 500 MB/s in pools with large
files (a pool with eight MIRROR vdevs on two Silicon Image 3124 controllers).
You need to carefully look for bottlenecks in the hardware. You don't indicate
how the disks are attached. I would measure the total ban
If you're concerned about someone reading the charge level of a Flash cell to
infer the value of the cell before being erased, then overwrite with random
data twice before issuing TRIM (remapping in an SSD probably makes this
ineffective).
Most people needing a secure erase feature need it to s
My point is not to advocate the TRIM command - those issues are already
well-known - but rather suggest that the code that sends TRIM is also a good
place to securely erase data on other media, such a hard disk.
TRIM is not a Windows 7 command but rather a device command. FreeBSD's CAM
layer a
OpenSolaris needs support for the TRIM command for SSDs. This command is
issued to an SSD to indicate that a block is no longer in use and the SSD may
erase it in preparation for future writes.
A SECURE_FREE dataset property might be added that says that when a block is
released to free space
> * SII3132-based PCIe X1 SATA card (2 ports)
This chip is slow.
PCIe cards based on the Silicon Image 3124 are much faster, peaking around 1
GB/sec aggregate throughput. However, the 3124 is a PCI-X chip and hence is
used behind an Intel PCI serial-to-parallel bridge for PCIe applications: th
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