Hi, thanks for your help I won't be able to install pv on our backup server, as it is in production (and we don't have test environment) how do you use the zfs send command ? what is a snasphot at a ZFS view ? We use the ZFS volume for storing data only, as a ufs or vxfs volume would do, and we don't create snapshot on/from it : df -h : Filesystem size used avail capacity Mounted on zvol01/vls 7.3T 3.4T 4.0T 46% /vls
ll total 245946205 drwxr-x--- 3 root other 9 Oct 11 14:39 . drwxr-xr-x 4 root root 4 Jul 27 18:52 .. -rw-r----- 1 root other 20971406848 Sep 29 08:58 TLVLS2C04_32640 -rw-r----- 1 root other 20971406848 Jul 12 17:47 TLVLS2C06_7405 -rw-r----- 1 root other 20971406848 Jul 13 07:36 TLVLS2C06_7406 -rw-r----- 1 root other 20971406848 Jul 13 08:31 TLVLS2C06_7407 -rw-r----- 1 root other 20971406848 Jul 13 09:06 TLVLS2C06_7408 -rw-r----- 1 root other 20971406848 Jul 13 09:26 TLVLS2C06_7409 -> TLVLS2C06_xxx files are virtual cartridges created by our backup software (time navigator), containing data from servers backuped up over the network. Reading /vls to write those files onto LTO3 tapes (or copying them to another volume - an ufs one for test) is slow. Here is the zpool status command result : pool: zvol01 state: ONLINE scrub: none requested config: NAME STATE READ WRITE CKSUM zvol01 ONLINE 0 0 0 c10t600508B40001350A00018000004D0000d0 ONLINE 0 0 0 c10t600508B40001350A00018000005B0000d0 ONLINE 0 0 0 c10t600508B40001350A0001800000500000d0 ONLINE 0 0 0 c10t600508B40001350A0001800000530000d0 ONLINE 0 0 0 errors: No known data errors At this time, no writing is made on the /vls volume as no data are backed up by our software, only reading from disk to write on LTO3 tapes Here are some stats : root@tlbkup02:/etc# zpool iostat 1 capacity operations bandwidth pool alloc free read write read write ---------- ----- ----- ----- ----- ----- ----- zvol01 3.35T 4.09T 103 120 12.9M 13.3M zvol01 3.35T 4.09T 213 0 26.6M 0 zvol01 3.35T 4.09T 181 0 22.6M 0 zvol01 3.35T 4.09T 135 0 16.9M 0 zvol01 3.35T 4.09T 183 0 22.8M 0 zvol01 3.35T 4.09T 204 0 25.5M 0 zvol01 3.35T 4.09T 158 39 19.5M 89.3K zvol01 3.35T 4.09T 227 0 28.4M 0 zvol01 3.35T 4.09T 264 0 29.5M 0 zvol01 3.35T 4.09T 292 436 33.7M 2.26M zvol01 3.35T 4.09T 200 0 25.0M 0 zvol01 3.35T 4.09T 193 0 24.0M 0 zvol01 3.35T 4.09T 187 0 23.4M 0 zvol01 3.35T 4.09T 249 0 31.0M 0 zvol01 3.35T 4.09T 240 0 29.9M 0 zvol01 3.35T 4.09T 222 0 27.8M 0 zvol01 3.35T 4.09T 194 0 24.3M 0 zvol01 3.35T 4.09T 236 0 29.4M 0 zvol01 3.35T 4.09T 230 0 28.7M 0 zvol01 3.35T 4.09T 188 0 23.3M 0 zvol01 3.35T 4.09T 249 0 31.1M 0 _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
