Re: [zfs-discuss] zfs send and file fragmentation

2009-01-14 Thread JZ
Yes, that's more like it. hahahahahahahaha, it's all happy. chatting on, Sun folks. best, z - Original Message - From: "David Shirley" To: Sent: Wednesday, January 14, 2009 11:44 PM Subject: Re: [zfs-discuss] zfs send and file fragmentation > CoW = copy

Re: [zfs-discuss] zfs send and file fragmentation

2009-01-14 Thread David Shirley
CoW = copy on write, a ZFS feature, which makes snapshots easier to maintain. However it also introduces file fragmentation in database datafiles. > Sorry, I just cannot tell how is this name related to > Sun, IMHO. > > In my days and enterprise environments, lots of CoWs > are stored in > rela

Re: [zfs-discuss] zfs send and file fragmentation

2009-01-14 Thread JZ
y 14, 2009 11:29 PM Subject: [zfs-discuss] zfs send and file fragmentation > Hi Guys, > > We are in the process of using snapshots and zfs send/recv to copy > terrabytes of database datafiles. > > Due to CoW not being very friendly to databases we have a LOT of > fragmenta

[zfs-discuss] zfs send and file fragmentation

2009-01-14 Thread David Shirley
Hi Guys, We are in the process of using snapshots and zfs send/recv to copy terrabytes of database datafiles. Due to CoW not being very friendly to databases we have a LOT of fragmentation on the datafiles. This really slows down zfs send. Is it possible (or already done) to have zfs send/rec