search for: sem_post

Greetings, I just ran "yum update" on a remote 4.2 Centos install. Then I typed "yum search some package" and got this error message repeating continuously: sem_post: Invalid argument A search for this message revealed only these links: http://www.linode.com/forums/archive/o_t/t_1898/centos4_installations_rpm_database_corruption.html http://bugs.centos.org/view.php?id=1202 If I run the command to look for duplicated RPMs described in those pages I get: -b...

..._errno (); - if (!trans->err) - trans->err = EIO; - } - if (r) { - nbdkit_debug ("cookie %" PRId64 " completed state machine, status %d", - trans->cookie, trans->err); - *prev = trans->next; - if (sem_post (&trans->sem)) { - nbdkit_error ("failed to post semaphore: %m"); - abort (); - } - } - else - prev = &trans->next; - trans = *prev; - } } - /* Clean up any stranded in-flight requests */ nbdkit_debug ("state mac...

.../buildtools/wafsamba/samba_utils.py:392: DeprecationWarning: the md5 module is deprecated; use hashlib instead import md5 Waf: Entering directory `/rehash/samba-3.6.0/source3/bin' [ 8/1242] Generating VERSION [ 12/1242] Compiling IDL ../librpc/idl/atsvc.idl sem_trywait: Permission denied sem_post: Permission denied sem_destroy: Permission denied [ 13/1242] Compiling IDL ../librpc/idl/auth.idl sem_trywait: Permission denied sem_post: Permission denied sem_destroy: Permission denied /rehash/samba-3.6.0/librpc/idl/atsvc.idl:5: error: expected identifier or '(' before '[' toke...

...ed reference to `sem_destroy' /lib64/libcom_err.a(error_message.o): In function `et_list_lock': error_message.c:(.text+0x1ff): undefined reference to `sem_wait' /lib64/libcom_err.a(error_message.o): In function `et_list_unlock': error_message.c:(.text+0x228): undefined reference to `sem_post' collect2: ld returned 1 exit status make[1]: *** [fsck.ocfs2] Error 1 make[1]: Leaving directory `/tmp/SBo/ocfs2-tools-1.6.3/fsck.ocfs2' make: *** [fsck.ocfs2] Error 2 Any help would be appreciated Thx, Jose Leal --------------------------------------------------- Venha conhecer o nov...

...t/../../../lib/et/error_message.c:68: undefined reference to `sem_init' /usr/lib/gcc/x86_64-unknown-linux-gnu/4.4.1/../../../../lib/libcom_err.a(error_message.o): In function `et_list_unlock': /sources/e2fsprogs-1.41.9/build/lib/et/../../../lib/et/error_message.c:95: undefined reference to `sem_post' /usr/lib/gcc/x86_64-unknown-linux-gnu/4.4.1/../../../../lib/libcom_err.a(error_message.o): In function `et_list_lock': /sources/e2fsprogs-1.41.9/build/lib/et/../../../lib/et/error_message.c:85: undefined reference to `sem_wait' collect2: ld returned 1 exit status make[1]: *** [fsck.ocf...

...t/../../../lib/et/error_message.c:68: undefined reference to `sem_init' /usr/lib/gcc/x86_64-unknown-linux-gnu/4.4.1/../../../../lib/libcom_err.a(error_message.o): In function `et_list_unlock': /sources/e2fsprogs-1.41.9/build/lib/et/../../../lib/et/error_message.c:95: undefined reference to `sem_post' /usr/lib/gcc/x86_64-unknown-linux-gnu/4.4.1/../../../../lib/libcom_err.a(error_message.o): In function `et_list_lock': /sources/e2fsprogs-1.41.9/build/lib/et/../../../lib/et/error_message.c:85: undefined reference to `sem_wait' collect2: ld returned 1 exit status make[1]: *** [fsck.ocf...

..../lib64/libcom_err.a(error_message.o): In function `et_list_lock': > (.text+0x18d): undefined reference to `sem_wait' > /usr/lib/gcc/x86_64-redhat-linux/4.6.2/../../../../lib64/libcom_err.a(error_message.o): In function `et_list_unlock': > (.text+0x1b6): undefined reference to `sem_post' > /usr/lib/gcc/x86_64-redhat-linux/4.6.2/../../../../lib64/libcom_err.a(error_message.o): In function `setup_et_lock': > (.text.startup+0x11): undefined reference to `sem_init' > /usr/lib/gcc/x86_64-redhat-linux/4.6.2/../../../../lib64/libcom_err.a(error_message.o): In functio...

...../buildtools/wafsamba/samba_utils.py:392: DeprecationWarning: the md5 module is deprecated; use hashlib instead import md5 Waf: Entering directory `/rehash/samba-3.6.0/source3/bin' [ 8/1242] Generating VERSION [ 12/1242] Compiling IDL ../librpc/idl/atsvc.idl sem_trywait: Permission denied sem_post: Permission denied sem_destroy: Permission denied [ 13/1242] Compiling IDL ../librpc/idl/auth.idl sem_trywait: Permission denied sem_post: Permission denied sem_destroy: Permission denied /rehash/samba-3.6.0/librpc/idl/atsvc.idl:5: error: expected identifier or '(' before '[' token...

.../buildtools/wafsamba/samba_utils.py:392: DeprecationWarning: the md5 module is deprecated; use hashlib instead import md5 Waf: Entering directory `/rehash/samba-3.6.0/source3/bin' [ 8/1242] Generating VERSION [ 12/1242] Compiling IDL ../librpc/idl/atsvc.idl sem_trywait: Permission denied sem_post: Permission denied sem_destroy: Permission denied [ 13/1242] Compiling IDL ../librpc/idl/auth.idl sem_trywait: Permission denied sem_post: Permission denied sem_destroy: Permission denied /rehash/samba-3.6.0/librpc/idl/atsvc.idl:5: error: expected identifier or '(' before '[' toke...

...+ if (!trans) nbdkit_debug ("partial reply handled, waiting for final reply"); - else if (write (fd, &r, sizeof r) != sizeof r) { - nbdkit_error ("failed to write pipe: %m"); - abort (); + else { + trans->err = r; + if (sem_post (&trans->sem)) { + nbdkit_error ("failed to post semaphore: %m"); + abort (); + } } } - if (fd >= 0) - close (fd); ACQUIRE_LOCK_FOR_CURRENT_SCOPE (&h->trans_lock); done = h->dead; } @@ -645,27 +640,32 @@ nbd_rea...

I'm not observing any noticeable performance differences, but I'm liking the diffstat. I can't push this patch until we release a new libnbd version with the _notify API addition, but am posting it now for playing with things. Eric Blake (2): nbd: Move transaction info from heap to stack nbd: Use nbdkit aio_*_notify variants plugins/nbd/nbd.c | 217

...------------- cite on --------------- [2152/2374] Linking default/source4/heimdal_build/libroken-samba4.so [2153/2374] Linking default/source4/heimdal_build/libasn1-samba4.so /lib/libcom_err.a(error_message.o): In function `et_list_unlock': error_message.c:(.text+0x20): undefined reference to `sem_post' /lib/libcom_err.a(error_message.o): In function `fini_et_lock': error_message.c:(.text+0x3e): undefined reference to `sem_destroy' /lib/libcom_err.a(error_message.o): In function `setup_et_lock': error_message.c:(.text+0x6e): undefined reference to `sem_init' /lib/libcom_err.a(...

...n + * updated by nbdplug_register, but it's only an informational + * message. + */ nbdkit_debug ("cookie %" PRId64 " completed state machine, status %d", - cookie, *error); + trans->cookie, *error); trans->err = *error; if (sem_post (&trans->sem)) { nbdkit_error ("failed to post semaphore: %m"); @@ -383,6 +388,7 @@ nbdplug_register (struct handle *h, struct transaction *trans, int64_t cookie) } nbdkit_debug ("cookie %" PRId64 " started by state machine", cookie); + trans->c...

These three patches (for discussion only, NOT to be applied) implement a mutex system that lets the user limit the number of libguestfs instances that can be launched per host. There are two uses that I have identified for this: firstly so we can enable parallel-tests (the default in automake >= 1.13) without blowing up the host. Secondly oVirt has raised concerns about how to limit the

..._errno (); + if (!trans->err) + trans->err = EIO; + } + if (r) { + nbdkit_debug ("cookie %" PRId64 " completed state machine, status %d", + trans->cookie, trans->err); + *prev = trans->next; if (sem_post (&trans->sem)) { nbdkit_error ("failed to post semaphore: %m"); abort (); } } + else + prev = &trans->next; + trans = *prev; } - ACQUIRE_LOCK_FOR_CURRENT_SCOPE (&h->trans_lock); - done = h->dead;...

..._errno (); + if (!trans->err) + trans->err = EIO; + } + if (r) { + nbdkit_debug ("cookie %" PRId64 " completed state machine, status %d", + trans->cookie, trans->err); + *prev = trans->next; if (sem_post (&trans->sem)) { nbdkit_error ("failed to post semaphore: %m"); abort (); } } + else + prev = &trans->next; + trans = *prev; } - ACQUIRE_LOCK_FOR_CURRENT_SCOPE (&h->trans_lock); - done = h->dead;...

...done = false; - int r; - - while (!done) { - struct transaction *trans; - - r = nbd_reply_raw (h, &trans); - if (r >= 0) { - if (!trans) - nbdkit_debug ("partial reply handled, waiting for final reply"); - else { - trans->err = r; - if (sem_post (&trans->sem)) { - nbdkit_error ("failed to post semaphore: %m"); - abort (); - } - } - } - ACQUIRE_LOCK_FOR_CURRENT_SCOPE (&h->trans_lock); - done = h->dead; - } - - /* Clean up any stranded in-flight requests */ - r = ESHUTDOWN;...

When using the nbd_aio_FOO_callback commands, there is nothing further to be learned about the command by calling nbd_aio_command_completed() compared to what the callback already had access to. There are still scenarios where manually retiring the command after the fact is useful (whether the return was 0 to keep the status unchanged, or -1 to alter the retirement status to *error), but by

Patch 1 played with an early draft of Rich's Fedora 30 libnbd package: https://bugzilla.redhat.com/show_bug.cgi?id=1713767#c17 Note that comment 21 provides a newer package 0.1.1-1 with a different API; and that libnbd has more unreleased API changes in the pipeline (whether that will be called 0.2 or 0.1.2); so we'll have to tweak things based on what is actually available in distros.

libnbd-0.1.2-1 is now available in Fedora 29/30 updates-testing, although it was not compiled against libxml2 so it lacks uri support (I ended up testing patch 4 with a self-built libnbd). Diffs since v1 - rebase to master, bump from libnbd 0.1 to 0.1.2, add URI support, better timing results Still not done - patch 5 needs associated tests Eric Blake (5): nbd: Check for libnbd nbd: