similar to: Flash IDE

Hello! I'm using a CompactFlash as storage device. Since those CF cards only have limited write cycles (CF does wear-levelling by itself, but you don't want to write too many timet so the card) i was wondering by what a factor the journaling of ext3 increases the write accesses to the CompactFlash compared to ext2. Thanks a lot already for your help! Sincerely Chris Braun

Hi! With 3.2-rc4 (probably earlier), Ext4 seems to remember what areas it trimmed: merkaba:~> fstrim -v /boot /boot: 224657408 bytes were trimmed merkaba:~> fstrim -v /boot /boot: 0 bytes were trimmed But BTRFS does not: merkaba:~> fstrim -v / /: 4431613952 bytes were trimmed merkaba:~> fstrim -v / /: 4341846016 bytes were trimmed Is it planned to add this feature to BTRFS

I''m looking to try BTRFS on a SSD, and I would like to know what SSD optimizations it applies. Is there a comprehensive list of what ssd mount option does? How are the blocks and metadata arranged? Are there options available comparable to ext2/ext3 to help reduce wear and improve performance? Specifically, on ext2 (journal means more writes, so I don''t use ext3 on SSDs,

Hi, I don''t know if it''s already been discussed here, but while thinking about using the OCZ Vertex 2 Pro SSD (which according to spec page has supercaps built in) as a shared slog and L2ARC device it stroke me that this might not be a such a good idea. Because this SSD is MLC based, write cycles are an issue here, though I can''t find any number in their spec. Why do I

Hi, i try to create a openWRT Samba 4.3 package and stumbled across the fact that samba 4.3 will create those message socks inside the private-dir. That results in creating entries inside /etc/samba/msg.sock. On openWRT /var is a tempFS in ram, so anything there is not a problem regarding nvram and wear leveling. Yet the root uses a jffs2 overlay. So while those message socks have no size, jffs2

On Mon, Feb 8, 2016 at 3:18 PM, <m.roth at 5-cent.us> wrote: > Chris Murphy wrote: >> DBAN is obsolete. NIST 800-88 for some time now says to use secure erase >> or enhanced security erase or crypto erase if supported. >> >> Other options do not erase data in remapped sectors. > > dban doesn't? What F/OSS does "secure erase"? And does it do

How well suited is btrfs to low-end and high-end FLASH devices? Paraphrasing from a thread elsewhere: FLASH can be categorised into two classes, which have extremely different characteristics: (a) the low-end (USB, SDHC, CF, cheap ATA SSD); and (b) the high-end (SAS, PCIe, NAS, expensive ATA SSD). My own experience is that the low end (a) can have erase blocks as large as 4MBytes or more

Well, now that I''ve figured out that network booting XCP is not really going to be feasible, I''m moving on to my next option: flash media installation. The systems that I purchased have SDHC slots on them, so I figured I''d attempt to install XCP to one of these cards. I had already read that there''s a minimum disk size in the installer (apparently 12 GB in

Hello Before I order a Travla C156 case (http://206.14.132.88/products/Travla/c156/C156.html), a Via mini-ITX motherboard (either the fanless ME6000 http://idotpc.com/TheStore/pc/viewPrd.asp?idcategory=50&idproduct=4 or the fan-equipped M10000 http://idotpc.com/TheStore/pc/viewPrd.asp?idcategory=50&idproduct=163 ) , and a PCI FXO card from Digium or OpenVox... has someone already

Will a write(2) to a ZFS file be made durable atomically? Under the hood in ZFS, writes are committed using either shadow paging or logging, as I understand it. So I believe that I mean to ask whether a write(2), pushed to ZPL, and pushed on down the stack, can be split into multiple transactions? Or, instead, is it guaranteed to be committed in a single transaction, and so committed atomically?

I've been thinking of making a (mostly) solid-state asterisk pbx. Take either centos or some other distro, cut it down to bare minimum and put asterisk + AMP on. Something that could be put onto a usb2.0 flash stick, bootable. Modern flash devices (usb, compactflash) have builtin wear leveling management and will last longer than you think:

Hi, I was discussing the common practice of disk eradication used by many firms for security. I was thinking this may be a useful feature of ZFS to have an option to eradicate data as its removed, meaning after the last reference/snapshot is done and a block is freed, then write the eradication patterns back to the removed blocks. By any chance, has this been discussed or considered before?

is that because the drive is compressing the information?? is there a way to turn this off?? i hate mandatory compression as losing one bit in a compressed file tends to be a big deal compared to the same in an uncompressed file. -- Securely sent with Tutanota. Claim your encrypted mailbox today! https://tutanota.com 10. Aug 2017 10:06 by lists at colorremedies.com: > On Thu, Aug 10, 2017,

Hello, I'm trying to put together a low cost - low powers PBX appliance for several customers. I have purchased a couple of the soekris net4801 boards and have asterisk up and running on them fine but they just don't quite cut it in the processing power department. I've been able to get about 10 simultaneous SIP calls with simple ulaw (no encoding decoding). While this might be OK for

Hi all Is it possible to securely delete a file from a zfs dataset/zpool once it''s been snapshotted, meaning "delete (and perhaps overwrite) all copies of this file"? Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 roy at karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et element?rt imperativ

Hi All ! i?m running Clearcase (IBM Rational) and have some strange problems ... when i use Samba ver 3.21b i can?t access the samba share by name (\\servername\sambashare) but i can access it on ip (\\192.168.1.100\sambashare\) i?m running debug level 10 and it seems like it can?t authenticate when access on netbios/dns/host name but on ip it can ? when running samba ver 3.23b from

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what file system are you using?? ssd drives have different characteristics that need to be accomadated (including a relatively slow write process which is obvious as soon as the buffer is full), and never, never put a swap partition on it, the high activity will wear it out rather quickly.? might also check cables, often a problem particularly if they are older sata cables being run at a possibly

We are currently considering the Linksys POE switch for a small Asterisk office deployment. There will be no separate wiring closet to put it in. Can anybody tell me if this switch has a loud fan? Users would not be able to tolerate a loud noise close by. Otherwise we will go with a fanless desktop switch. Thanks, -- Andres

On Fri, November 3, 2017 3:36 am, hw wrote: > Valeri Galtsev wrote: >> If you have not Dell server hardware my choice of [hardware] RAID cards >> would be: >> >> Areca > > Areca is forbiddingly expensive. Yes, and it is worth every dollar it costs. All good RAID cards will be on the same price level. Those cheaper ones I will not let into our stables (don't