PROBE::IOBLOCK.END(3stap)                        IO Scheduler and block IO Taps                        PROBE::IOBLOCK.END(3stap)



NAME
       probe::ioblock.end - Fires whenever a block I/O transfer is complete.

SYNOPSIS
       ioblock.end

VALUES
       None

DESCRIPTION
       name - name of the probe point 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 error - 0 on success rw - binary trace for read/write request vcnt - bio vector count which represents
       number of array element (page, offset, length) which makes 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.  hw_segments - number of
       segments after physical and DMA remapping hardware coalescing is performed size - total size in bytes

CONTEXT
       The process signals the transfer is done.



SystemTap Tapset Reference                                 August 2011                                 PROBE::IOBLOCK.END(3stap)