I understood the concept very well, I have already been through all this documents. The major hindrance is compression, as given in document the meta object set is compressed and the first byte of the meta object set is always "type", but the sector where I am reaching is having a structure with first byte as 00 (DMU_OT_NONE) which means "unallocated object". I have verified the structure through all the UBERBLOCK, but I am getting the same type of structure at different sectors.As per the document the structure should always contain block pointers, but I am not getting any sort of pointers, may be this dnode is compressed. Attached is the jpg of the sector where I am reaching through UBERBLOCK's block pointers. I want to know if this the right sector, and if YES how to reach the next level dnode through this sector.
[IMG]file:///C:/DOCUME%7E1/ADMINI%7E1/LOCALS%7E1/Temp/moz-screenshot.jpg[/IMG]
Hello,
I have a .z file which i understand to be UNIX.
I'm on PC (no UNIX boxes) and have tried many different unzipping programs to extract this .z file, but only PicoZip has allowed me to view what is inside (telling me, i think, that it's not corrupt), but i have not been able to extract... (3 Replies)
Hi Folks,
As I am familiar wih both types compresion forms: gun-zip and .rpm. My questions is how do I uncompress gunz.zip type? As the .rpm I can double click and it will extract...Can someone shed some light on this and thank you...
M (2 Replies)
Hi all,
I am having few files which needs to be concted into a single file and then it is compressed and FTPed from the UNIX server to the Windows server.
For the above purpose i am using gzip command to compress the files after concetenation.
And i am FTP ing the compressed file in the... (3 Replies)
Hello everyone
I want to use compression in my tape when I backup some file. For example I have several files that use 50gb. If I backup this I need to use two cartridge because without compression I can backup 36gb.
My question is with flag I need to use to compress and I can use 72gb in... (2 Replies)
Hi Guys,
totally new to scripting.
I have a huge list of foleders.
I want to tar the contents of each folder inside the same folder and the name of the tar file is the same name as the folder.
how would I go about this in scirpt?
cheers
Viper (3 Replies)
I'am looking for script (or tool) that would compress all files with given extension in all subdirectory. Important part is that every one file have to end in separate archive whit it's own name.
Eaven if I could point multiple file in one directory and compress them it would be ok.
I' am... (1 Reply)
Hi all,
I am working on a sample backup code, where i read the files per 7200 bytes and send it to server. Before sending to server, i compress each 7200 bytes using zlib compression algorithm using dictionary max length of 1.5 MB . I find zlib is slow.
Can anyone recommend me a... (3 Replies)
Discussion started by: selvarajvss
3 Replies
LEARN ABOUT CENTOS
probe::ioblock_trace.request
PROBE::IOBLOCK_TRACE(3stap) IO Scheduler and block IO Taps PROBE::IOBLOCK_TRACE(3stap)NAME
probe::ioblock_trace.request - Fires just as a generic block I/O request is created for a bio.
SYNOPSIS
ioblock_trace.request
VALUES
None
DESCRIPTION
name - name of the probe point q - request queue on which this bio was queued. devname - block device name ino - i-node number of the
mapped file bytes_done - number of bytes transferred sector - beginning sector for the entire bio flags - see below BIO_UPTODATE 0 ok after
I/O completion BIO_RW_BLOCK 1 RW_AHEAD set, and read/write would block BIO_EOF 2 out-out-bounds error BIO_SEG_VALID 3 nr_hw_seg valid
BIO_CLONED 4 doesn't own data BIO_BOUNCED 5 bio is a bounce bio BIO_USER_MAPPED 6 contains user pages BIO_EOPNOTSUPP 7 not supported
rw - binary trace for read/write request vcnt - bio vector count which represents number of array element (page, offset, length) which make
up this I/O request idx - offset into the bio vector array phys_segments - number of segments in this bio after physical address coalescing
is performed. size - total size in bytes bdev - target block device bdev_contains - points to the device object which contains the
partition (when bio structure represents a partition) p_start_sect - points to the start sector of the partition structure of the device
CONTEXT
The process makes block I/O request
SystemTap Tapset Reference June 2014 PROBE::IOBLOCK_TRACE(3stap)