cmurf

1642 ms·

3781.
by cmurf 12y ago
Metadata/data checksums are CRC-32C on all platforms and is per 4KB fs block. And ext4's (optional) checksumming also uses it. TCP is 16-bit and not CRC, although ethernet makes use of CRC-32. While SHA-2 is a cryptographic functi
3782.
by cmurf 12y ago
Worse, to receive calls via Hangouts (web browser) you have to join Google+ which is complete b.s. If there's anything worse than Hangouts it's Google+. At least Hangouts is slowly getting better.
3783.
by cmurf 12y ago
I'm pretty sure the merchant equipment is going to support either chip&signature or chip&pin, seeing as we already have signatures for credit card, and PINs for debit card transactions. The difference will be up to the card iss
3784.
by cmurf 12y ago
I had an AMEX Blue Business card with an RF chip in it, transaction receipts had a completely different last 4 digits using RF vs magnetic. I called to see if I could get a chip+pin and they said yes except it's chip+signature. So at l
3785.
by cmurf 12y ago
On Btrfs an unprivileged user can create subvolumes/snapshots. There's a mount option that lets them remove subvolumes they own.
3786.
by cmurf 12y ago
GlusterFS offers WORM volumes. Volumes made available with NFS/SMB.
3787.
by cmurf 12y ago
If delaying the "write once" aspect of a volume (or tree) is OK, several of the above options offer read-only snapshots. Btrfs ro snapshots aren't writable even by root. They can be deleted or a rw snapshot can be made from t
3788.
by cmurf 12y ago
ZFS, Btrfs do this with COW. NTFS (volume snapshot service) and ReFS makes it COW. LVM2 offers a new thinp COW based snapshot that could make this work for any filesystem. Edit: And Apple's CoreStorage also has some kind of COW capabil